110 files changed, 11381 insertions, 1924 deletions

diff --git a/quantum/audio.c b/quantum/audio.c
deleted file mode 100644
index 3a3a1a491..000000000
--- a/quantum/audio.c
+++ /dev/null
@@ -1,362 +0,0 @@
-#include <stdio.h>
-#include <string.h>
-#include <math.h>
-#include <avr/pgmspace.h>
-#include <avr/interrupt.h>
-#include <avr/io.h>
-
-#include "audio.h"
-#include "keymap_common.h"
-
-#define PI 3.14159265
-
-// #define PWM_AUDIO
-
-#ifdef PWM_AUDIO
-    #include "wave.h"
-    #define SAMPLE_DIVIDER 39
-    #define SAMPLE_RATE (2000000.0/SAMPLE_DIVIDER/2048)
-    // Resistor value of 1/ (2 * PI * 10nF * (2000000 hertz / SAMPLE_DIVIDER / 10)) for 10nF cap
-#endif
-
-void delay_us(int count) {
-  while(count--) {
-    _delay_us(1);
-  }
-}
-
-int voices = 0;
-int voice_place = 0;
-double frequency = 0;
-int volume = 0;
-long position = 0;
-
-double frequencies[8] = {0, 0, 0, 0, 0, 0, 0, 0};
-int volumes[8] = {0, 0, 0, 0, 0, 0, 0, 0};
-bool sliding = false;
-
-int max = 0xFF;
-float sum = 0;
-int value = 128;
-float place = 0;
-float places[8] = {0, 0, 0, 0, 0, 0, 0, 0};
-
-uint16_t place_int = 0;
-bool repeat = true;
-uint8_t * sample;
-uint16_t sample_length = 0;
-
-
-bool notes = false;
-bool note = false;
-float note_frequency = 0;
-float note_length = 0;
-uint16_t note_position = 0;
-float (* notes_pointer)[][2];
-uint8_t notes_length;
-bool notes_repeat;
-uint8_t current_note = 0;
-
-void stop_all_notes() {
-    voices = 0;
-    #ifdef PWM_AUDIO
-        TIMSK3 &= ~_BV(OCIE3A);
-    #else
-        TIMSK3 &= ~_BV(OCIE3A);
-        TCCR3A &= ~_BV(COM3A1);
-    #endif
-    notes = false;
-    note = false;
-    frequency = 0;
-    volume = 0;
-
-    for (int i = 0; i < 8; i++) {
-        frequencies[i] = 0;
-        volumes[i] = 0;
-    }
-}
-
-void stop_note(double freq) {
-    #ifdef PWM_AUDIO
-        freq = freq / SAMPLE_RATE;
-    #endif
-    for (int i = 7; i >= 0; i--) {
-        if (frequencies[i] == freq) {
-            frequencies[i] = 0;
-            volumes[i] = 0;
-            for (int j = i; (j < 7); j++) {
-                frequencies[j] = frequencies[j+1];
-                frequencies[j+1] = 0;
-                volumes[j] = volumes[j+1];
-                volumes[j+1] = 0;
-            }
-        }
-    }
-    voices--;
-    if (voices < 0)
-        voices = 0;
-    if (voices == 0) {
-        #ifdef PWM_AUDIO
-            TIMSK3 &= ~_BV(OCIE3A);
-        #else
-            TIMSK3 &= ~_BV(OCIE3A);
-            TCCR3A &= ~_BV(COM3A1);
-        #endif
-        frequency = 0;
-        volume = 0;
-        note = false;
-    } else {
-        double freq = frequencies[voices - 1];
-        int vol = volumes[voices - 1];
-        double starting_f = frequency;
-        if (frequency < freq) {
-            sliding = true;
-            for (double f = starting_f; f <= freq; f += ((freq - starting_f) / 2000.0)) {
-                frequency = f;
-            }
-            sliding = false;
-        } else if (frequency > freq) {
-            sliding = true;
-            for (double f = starting_f; f >= freq; f -= ((starting_f - freq) / 2000.0)) {
-                frequency = f;
-            }
-            sliding = false;
-        }
-        frequency = freq;
-        volume = vol;
-    }
-}
-
-void init_notes() {
-
-    #ifdef PWM_AUDIO
-        PLLFRQ = _BV(PDIV2);
-        PLLCSR = _BV(PLLE);
-        while(!(PLLCSR & _BV(PLOCK)));
-        PLLFRQ |= _BV(PLLTM0); /* PCK 48MHz */
-
-        /* Init a fast PWM on Timer4 */
-        TCCR4A = _BV(COM4A0) | _BV(PWM4A); /* Clear OC4A on Compare Match */
-        TCCR4B = _BV(CS40); /* No prescaling => f = PCK/256 = 187500Hz */
-        OCR4A = 0;
-
-        /* Enable the OC4A output */
-        DDRC |= _BV(PORTC6);
-
-        TIMSK3 &= ~_BV(OCIE3A); // Turn off 3A interputs
-        
-        TCCR3A = 0x0; // Options not needed
-        TCCR3B = _BV(CS31) | _BV(CS30) | _BV(WGM32); // 64th prescaling and CTC
-        OCR3A = SAMPLE_DIVIDER - 1; // Correct count/compare, related to sample playback
-    #else
-        DDRC |= _BV(PORTC6);
-
-        TIMSK3 &= ~_BV(OCIE3A); // Turn off 3A interputs
-
-        TCCR3A = (0 << COM3A1) | (0 << COM3A0) | (1 << WGM31) | (0 << WGM30);
-        TCCR3B = (1 << WGM33) | (1 << WGM32) | (0 << CS32) | (1 << CS31) | (0 << CS30);
-    #endif
-}
-
-
-ISR(TIMER3_COMPA_vect) {
-
-    if (note) {
-        #ifdef PWM_AUDIO
-            if (voices == 1) {
-                // SINE
-                OCR4A = pgm_read_byte(&sinewave[(uint16_t)place]) >> 2;
-            
-                // SQUARE
-                // if (((int)place) >= 1024){
-                //     OCR4A = 0xFF >> 2;
-                // } else {
-                //     OCR4A = 0x00;
-                // }
-                
-                // SAWTOOTH
-                // OCR4A = (int)place / 4;
-
-                // TRIANGLE
-                // if (((int)place) >= 1024) {
-                //     OCR4A = (int)place / 2;
-                // } else {
-                //     OCR4A = 2048 - (int)place / 2;
-                // }
-
-                place += frequency;
-
-                if (place >= SINE_LENGTH)
-                    place -= SINE_LENGTH;
-
-            } else {
-                int sum = 0;
-                for (int i = 0; i < voices; i++) {
-                    // SINE
-                    sum += pgm_read_byte(&sinewave[(uint16_t)places[i]]) >> 2;
-
-                    // SQUARE
-                    // if (((int)places[i]) >= 1024){
-                    //     sum += 0xFF >> 2;
-                    // } else {
-                    //     sum += 0x00;
-                    // }
-
-                    places[i] += frequencies[i];
-
-                    if (places[i] >= SINE_LENGTH)
-                        places[i] -= SINE_LENGTH;
-                }
-                OCR4A = sum;
-            }
-        #else
-            if (frequency > 0) {
-                // ICR3 = (int)(((double)F_CPU) / frequency); // Set max to the period
-                // OCR3A = (int)(((double)F_CPU) / frequency) >> 1; // Set compare to half the period
-                if (place > 10) {
-                    voice_place = (voice_place + 1) % voices;
-                    place = 0.0;
-                }
-                ICR3 = (int)(((double)F_CPU) / frequencies[voice_place]); // Set max to the period
-                OCR3A = (int)(((double)F_CPU) / frequencies[voice_place]) >> 1; // Set compare to half the period
-                place++;
-            }
-        #endif
-    }
-
-    // SAMPLE
-    // OCR4A = pgm_read_byte(&sample[(uint16_t)place_int]);
-
-    // place_int++;
-
-    // if (place_int >= sample_length)
-    //     if (repeat)
-    //         place_int -= sample_length;
-    //     else
-    //         TIMSK3 &= ~_BV(OCIE3A);
-
-
-    if (notes) {
-        #ifdef PWM_AUDIO
-            OCR4A = pgm_read_byte(&sinewave[(uint16_t)place]) >> 0;
-
-            place += note_frequency;
-            if (place >= SINE_LENGTH)
-                place -= SINE_LENGTH;
-        #else
-            if (note_frequency > 0) {
-                ICR3 = (int)(((double)F_CPU) / note_frequency); // Set max to the period
-                OCR3A = (int)(((double)F_CPU) / note_frequency) >> 1; // Set compare to half the period
-            }
-        #endif
-
-
-        note_position++;
-        if (note_position >= note_length) {
-            current_note++;
-            if (current_note >= notes_length) {
-                if (notes_repeat) {
-                    current_note = 0;
-                } else {
-                    #ifdef PWM_AUDIO
-                        TIMSK3 &= ~_BV(OCIE3A);
-                    #else
-                        TIMSK3 &= ~_BV(OCIE3A);
-                        TCCR3A &= ~_BV(COM3A1);
-                    #endif
-                    notes = false;
-                    return;
-                }
-            }
-            #ifdef PWM_AUDIO
-                note_frequency = (*notes_pointer)[current_note][0] / SAMPLE_RATE;
-                note_length = (*notes_pointer)[current_note][1];
-            #else
-                note_frequency = (*notes_pointer)[current_note][0];
-                note_length = (*notes_pointer)[current_note][1] / 4;
-            #endif
-            note_position = 0;
-        }
-
-    }
-
-}
-
-void play_notes(float (*np)[][2], uint8_t n_length, bool n_repeat) {
-    if (note)
-        stop_all_notes();
-    notes = true;
-
-    notes_pointer = np;
-    notes_length = n_length;
-    notes_repeat = n_repeat;
-
-    place = 0;
-    current_note = 0;
-    #ifdef PWM_AUDIO
-        note_frequency = (*notes_pointer)[current_note][0] / SAMPLE_RATE;
-        note_length = (*notes_pointer)[current_note][1];
-    #else
-        note_frequency = (*notes_pointer)[current_note][0];
-        note_length = (*notes_pointer)[current_note][1] / 4;
-    #endif
-    note_position = 0;
-
-
-    #ifdef PWM_AUDIO
-        TIMSK3 |= _BV(OCIE3A);
-    #else
-        TIMSK3 |= _BV(OCIE3A);
-        TCCR3A |= _BV(COM3A1);
-    #endif
-}
-
-void play_sample(uint8_t * s, uint16_t l, bool r) {
-    stop_all_notes();
-    place_int = 0;
-    sample = s;
-    sample_length = l;
-    repeat = r;
-
-    #ifdef PWM_AUDIO
-        TIMSK3 |= _BV(OCIE3A);
-    #else
-    #endif
-}
-
-void play_note(double freq, int vol) {
-    if (notes)
-        stop_all_notes();
-    note = true;
-    #ifdef PWM_AUDIO
-        freq = freq / SAMPLE_RATE;
-    #endif
-    if (freq > 0) {
-        if (frequency != 0) {
-            double starting_f = frequency;
-            if (frequency < freq) {
-                for (double f = starting_f; f <= freq; f += ((freq - starting_f) / 2000.0)) {   
-                    frequency = f;
-                }
-            } else if (frequency > freq) {
-                for (double f = starting_f; f >= freq; f -= ((starting_f - freq) / 2000.0)) {
-                    frequency = f;
-                }
-            }
-        }
-        frequency = freq;
-        volume = vol;
-
-        frequencies[voices] = frequency;
-        volumes[voices] = volume;
-        voices++;
-    }
-
-    #ifdef PWM_AUDIO
-        TIMSK3 |= _BV(OCIE3A);
-    #else
-        TIMSK3 |= _BV(OCIE3A);
-        TCCR3A |= _BV(COM3A1);
-    #endif
-
-}
\ No newline at end of file
diff --git a/quantum/audio.h b/quantum/audio.h
deleted file mode 100644
index 99203cea7..000000000
--- a/quantum/audio.h
+++ /dev/null
@@ -1,11 +0,0 @@
-#include <stdint.h>
-#include <stdbool.h>
-#include <avr/io.h>
-#include <util/delay.h>
-
-void play_sample(uint8_t * s, uint16_t l, bool r);
-void play_note(double freq, int vol);
-void stop_note(double freq);
-void stop_all_notes();
-void init_notes();
-void play_notes(float (*np)[][2], uint8_t n_length, bool n_repeat);
\ No newline at end of file
diff --git a/quantum/audio/audio.c b/quantum/audio/audio.c
new file mode 100644
index 000000000..ead5fbf3e
--- /dev/null
+++ b/quantum/audio/audio.c
@@ -0,0 +1,477 @@
+#include <stdio.h>
+#include <string.h>
+//#include <math.h>
+#include <avr/pgmspace.h>
+#include <avr/interrupt.h>
+#include <avr/io.h>
+#include "print.h"
+#include "audio.h"
+#include "keymap.h"
+
+#include "eeconfig.h"
+
+#define CPU_PRESCALER 8
+
+// -----------------------------------------------------------------------------
+// Timer Abstractions
+// -----------------------------------------------------------------------------
+
+// TIMSK3 - Timer/Counter #3 Interrupt Mask Register
+// Turn on/off 3A interputs, stopping/enabling the ISR calls
+#define ENABLE_AUDIO_COUNTER_3_ISR TIMSK3 |= _BV(OCIE3A)
+#define DISABLE_AUDIO_COUNTER_3_ISR TIMSK3 &= ~_BV(OCIE3A)
+
+// TCCR3A: Timer/Counter #3 Control Register
+// Compare Output Mode (COM3An) = 0b00 = Normal port operation, OC3A disconnected from PC6
+#define ENABLE_AUDIO_COUNTER_3_OUTPUT TCCR3A |= _BV(COM3A1);
+#define DISABLE_AUDIO_COUNTER_3_OUTPUT TCCR3A &= ~(_BV(COM3A1) | _BV(COM3A0));
+
+// Fast PWM Mode Controls
+#define TIMER_3_PERIOD     ICR3
+#define TIMER_3_DUTY_CYCLE OCR3A
+
+// -----------------------------------------------------------------------------
+
+
+int voices = 0;
+int voice_place = 0;
+float frequency = 0;
+int volume = 0;
+long position = 0;
+
+float frequencies[8] = {0, 0, 0, 0, 0, 0, 0, 0};
+int volumes[8] = {0, 0, 0, 0, 0, 0, 0, 0};
+bool sliding = false;
+
+float place = 0;
+
+uint8_t * sample;
+uint16_t sample_length = 0;
+
+bool     playing_notes = false;
+bool     playing_note = false;
+float    note_frequency = 0;
+float    note_length = 0;
+uint8_t  note_tempo = TEMPO_DEFAULT;
+float    note_timbre = TIMBRE_DEFAULT;
+uint16_t note_position = 0;
+float (* notes_pointer)[][2];
+uint16_t notes_count;
+bool     notes_repeat;
+float    notes_rest;
+bool     note_resting = false;
+
+uint8_t current_note = 0;
+uint8_t rest_counter = 0;
+
+#ifdef VIBRATO_ENABLE
+float vibrato_counter = 0;
+float vibrato_strength = .5;
+float vibrato_rate = 0.125;
+#endif
+
+float polyphony_rate = 0;
+
+static bool audio_initialized = false;
+
+audio_config_t audio_config;
+
+uint16_t envelope_index = 0;
+
+void audio_init()
+{
+
+    // Check EEPROM
+    if (!eeconfig_is_enabled())
+    {
+        eeconfig_init();
+    }
+    audio_config.raw = eeconfig_read_audio();
+
+        // Set port PC6 (OC3A and /OC4A) as output
+    DDRC |= _BV(PORTC6);
+
+    DISABLE_AUDIO_COUNTER_3_ISR;
+
+        // TCCR3A / TCCR3B: Timer/Counter #3 Control Registers
+        // Compare Output Mode (COM3An) = 0b00 = Normal port operation, OC3A disconnected from PC6
+        // Waveform Generation Mode (WGM3n) = 0b1110 = Fast PWM Mode 14 (Period = ICR3, Duty Cycle = OCR3A)
+        // Clock Select (CS3n) = 0b010 = Clock / 8
+    TCCR3A = (0 << COM3A1) | (0 << COM3A0) | (1 << WGM31) | (0 << WGM30);
+    TCCR3B = (1 << WGM33)  | (1 << WGM32)  | (0 << CS32)  | (1 << CS31) | (0 << CS30);
+
+    audio_initialized = true;
+}
+
+void stop_all_notes()
+{
+    if (!audio_initialized) {
+        audio_init();
+    }
+    voices = 0;
+
+    DISABLE_AUDIO_COUNTER_3_ISR;
+    DISABLE_AUDIO_COUNTER_3_OUTPUT;
+
+    playing_notes = false;
+    playing_note = false;
+    frequency = 0;
+    volume = 0;
+
+    for (uint8_t i = 0; i < 8; i++)
+    {
+        frequencies[i] = 0;
+        volumes[i] = 0;
+    }
+}
+
+void stop_note(float freq)
+{
+    if (playing_note) {
+        if (!audio_initialized) {
+            audio_init();
+        }
+        for (int i = 7; i >= 0; i--) {
+            if (frequencies[i] == freq) {
+                frequencies[i] = 0;
+                volumes[i] = 0;
+                for (int j = i; (j < 7); j++) {
+                    frequencies[j] = frequencies[j+1];
+                    frequencies[j+1] = 0;
+                    volumes[j] = volumes[j+1];
+                    volumes[j+1] = 0;
+                }
+                break;
+            }
+        }
+        voices--;
+        if (voices < 0)
+            voices = 0;
+        if (voice_place >= voices) {
+            voice_place = 0;
+        }
+        if (voices == 0) {
+            DISABLE_AUDIO_COUNTER_3_ISR;
+            DISABLE_AUDIO_COUNTER_3_OUTPUT;
+            frequency = 0;
+            volume = 0;
+            playing_note = false;
+        }
+    }
+}
+
+#ifdef VIBRATO_ENABLE
+
+float mod(float a, int b)
+{
+    float r = fmod(a, b);
+    return r < 0 ? r + b : r;
+}
+
+float vibrato(float average_freq) {
+    #ifdef VIBRATO_STRENGTH_ENABLE
+        float vibrated_freq = average_freq * pow(vibrato_lut[(int)vibrato_counter], vibrato_strength);
+    #else
+        float vibrated_freq = average_freq * vibrato_lut[(int)vibrato_counter];
+    #endif
+    vibrato_counter = mod((vibrato_counter + vibrato_rate * (1.0 + 440.0/average_freq)), VIBRATO_LUT_LENGTH);
+    return vibrated_freq;
+}
+
+#endif
+
+ISR(TIMER3_COMPA_vect)
+{
+        float freq;
+
+        if (playing_note) {
+                if (voices > 0) {
+                        if (polyphony_rate > 0) {
+                                if (voices > 1) {
+                                        voice_place %= voices;
+                                        if (place++ > (frequencies[voice_place] / polyphony_rate / CPU_PRESCALER)) {
+                                                voice_place = (voice_place + 1) % voices;
+                                                place = 0.0;
+                                        }
+                                }
+
+                                #ifdef VIBRATO_ENABLE
+                                        if (vibrato_strength > 0) {
+                                                freq = vibrato(frequencies[voice_place]);
+                                        } else {
+                                                freq = frequencies[voice_place];
+                                        }
+                                #else
+                                        freq = frequencies[voice_place];
+                                #endif
+                        } else {
+                                if (frequency != 0 && frequency < frequencies[voices - 1] && frequency < frequencies[voices - 1] * pow(2, -440/frequencies[voices - 1]/12/2)) {
+                                        frequency = frequency * pow(2, 440/frequency/12/2);
+                                } else if (frequency != 0 && frequency > frequencies[voices - 1] && frequency > frequencies[voices - 1] * pow(2, 440/frequencies[voices - 1]/12/2)) {
+                                        frequency = frequency * pow(2, -440/frequency/12/2);
+                                } else {
+                                        frequency = frequencies[voices - 1];
+                                }
+
+                                #ifdef VIBRATO_ENABLE
+                                        if (vibrato_strength > 0) {
+                                                freq = vibrato(frequency);
+                                        } else {
+                                                freq = frequency;
+                                        }
+                                #else
+                                        freq = frequency;
+                                #endif
+                        }
+
+                        if (envelope_index < 65535) {
+                                envelope_index++;
+                        }
+
+                        freq = voice_envelope(freq);
+
+                        if (freq < 30.517578125) {
+                                freq = 30.52;
+                        }
+
+                        TIMER_3_PERIOD = (uint16_t)(((float)F_CPU) / (freq * CPU_PRESCALER));
+                        TIMER_3_DUTY_CYCLE = (uint16_t)((((float)F_CPU) / (freq * CPU_PRESCALER)) * note_timbre);
+                }
+        }
+
+        if (playing_notes) {
+                if (note_frequency > 0) {
+                        #ifdef VIBRATO_ENABLE
+                                if (vibrato_strength > 0) {
+                                        freq = vibrato(note_frequency);
+                                } else {
+                                        freq = note_frequency;
+                                }
+                        #else
+                                        freq = note_frequency;
+                        #endif
+
+                        if (envelope_index < 65535) {
+                                envelope_index++;
+                        }
+                        freq = voice_envelope(freq);
+
+                        TIMER_3_PERIOD = (uint16_t)(((float)F_CPU) / (freq * CPU_PRESCALER));
+                        TIMER_3_DUTY_CYCLE = (uint16_t)((((float)F_CPU) / (freq * CPU_PRESCALER)) * note_timbre);
+                } else {
+                        TIMER_3_PERIOD = 0;
+                        TIMER_3_DUTY_CYCLE = 0;
+                }
+
+                note_position++;
+                bool end_of_note = false;
+                if (TIMER_3_PERIOD > 0) {
+                        end_of_note = (note_position >= (note_length / TIMER_3_PERIOD * 0xFFFF));
+                } else {
+                        end_of_note = (note_position >= (note_length * 0x7FF));
+                }
+
+                if (end_of_note) {
+                        current_note++;
+                        if (current_note >= notes_count) {
+                                if (notes_repeat) {
+                                        current_note = 0;
+                                } else {
+                                        DISABLE_AUDIO_COUNTER_3_ISR;
+                                        DISABLE_AUDIO_COUNTER_3_OUTPUT;
+                                        playing_notes = false;
+                                        return;
+                                }
+                        }
+                        if (!note_resting && (notes_rest > 0)) {
+                                note_resting = true;
+                                note_frequency = 0;
+                                note_length = notes_rest;
+                                current_note--;
+                        } else {
+                                note_resting = false;
+                                envelope_index = 0;
+                                note_frequency = (*notes_pointer)[current_note][0];
+                                note_length = ((*notes_pointer)[current_note][1] / 4) * (((float)note_tempo) / 100);
+                        }
+
+                        note_position = 0;
+                }
+        }
+
+        if (!audio_config.enable) {
+                playing_notes = false;
+                playing_note = false;
+        }
+}
+
+void play_note(float freq, int vol) {
+
+    if (!audio_initialized) {
+        audio_init();
+    }
+
+        if (audio_config.enable && voices < 8) {
+            DISABLE_AUDIO_COUNTER_3_ISR;
+
+            // Cancel notes if notes are playing
+            if (playing_notes)
+                stop_all_notes();
+
+            playing_note = true;
+
+            envelope_index = 0;
+
+            if (freq > 0) {
+                frequencies[voices] = freq;
+                volumes[voices] = vol;
+                voices++;
+            }
+
+        ENABLE_AUDIO_COUNTER_3_ISR;
+        ENABLE_AUDIO_COUNTER_3_OUTPUT;
+        }
+
+}
+
+void play_notes(float (*np)[][2], uint16_t n_count, bool n_repeat, float n_rest)
+{
+
+    if (!audio_initialized) {
+        audio_init();
+    }
+
+        if (audio_config.enable) {
+
+            DISABLE_AUDIO_COUNTER_3_ISR;
+
+                // Cancel note if a note is playing
+            if (playing_note)
+                stop_all_notes();
+
+            playing_notes = true;
+
+            notes_pointer = np;
+            notes_count = n_count;
+            notes_repeat = n_repeat;
+            notes_rest = n_rest;
+
+            place = 0;
+            current_note = 0;
+
+        note_frequency = (*notes_pointer)[current_note][0];
+        note_length = ((*notes_pointer)[current_note][1] / 4) * (((float)note_tempo) / 100);
+            note_position = 0;
+
+
+        ENABLE_AUDIO_COUNTER_3_ISR;
+        ENABLE_AUDIO_COUNTER_3_OUTPUT;
+        }
+
+}
+
+bool is_playing_notes(void) {
+        return playing_notes;
+}
+
+bool is_audio_on(void) {
+    return (audio_config.enable != 0);
+}
+
+void audio_toggle(void) {
+    audio_config.enable ^= 1;
+    eeconfig_update_audio(audio_config.raw);
+    if (audio_config.enable)
+        audio_on_user();
+}
+
+void audio_on(void) {
+    audio_config.enable = 1;
+    eeconfig_update_audio(audio_config.raw);
+    audio_on_user();
+}
+
+void audio_off(void) {
+    audio_config.enable = 0;
+    eeconfig_update_audio(audio_config.raw);
+}
+
+#ifdef VIBRATO_ENABLE
+
+// Vibrato rate functions
+
+void set_vibrato_rate(float rate) {
+    vibrato_rate = rate;
+}
+
+void increase_vibrato_rate(float change) {
+    vibrato_rate *= change;
+}
+
+void decrease_vibrato_rate(float change) {
+    vibrato_rate /= change;
+}
+
+#ifdef VIBRATO_STRENGTH_ENABLE
+
+void set_vibrato_strength(float strength) {
+    vibrato_strength = strength;
+}
+
+void increase_vibrato_strength(float change) {
+    vibrato_strength *= change;
+}
+
+void decrease_vibrato_strength(float change) {
+    vibrato_strength /= change;
+}
+
+#endif  /* VIBRATO_STRENGTH_ENABLE */
+
+#endif /* VIBRATO_ENABLE */
+
+// Polyphony functions
+
+void set_polyphony_rate(float rate) {
+    polyphony_rate = rate;
+}
+
+void enable_polyphony() {
+    polyphony_rate = 5;
+}
+
+void disable_polyphony() {
+    polyphony_rate = 0;
+}
+
+void increase_polyphony_rate(float change) {
+    polyphony_rate *= change;
+}
+
+void decrease_polyphony_rate(float change) {
+    polyphony_rate /= change;
+}
+
+// Timbre function
+
+void set_timbre(float timbre) {
+    note_timbre = timbre;
+}
+
+// Tempo functions
+
+void set_tempo(uint8_t tempo) {
+    note_tempo = tempo;
+}
+
+void decrease_tempo(uint8_t tempo_change) {
+    note_tempo += tempo_change;
+}
+
+void increase_tempo(uint8_t tempo_change) {
+    if (note_tempo - tempo_change < 10) {
+        note_tempo = 10;
+    } else {
+        note_tempo -= tempo_change;
+    }
+}
diff --git a/quantum/audio/audio.h b/quantum/audio/audio.h
new file mode 100644
index 000000000..47f326ea0
--- /dev/null
+++ b/quantum/audio/audio.h
@@ -0,0 +1,91 @@
+#ifndef AUDIO_H
+#define AUDIO_H
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <avr/io.h>
+#include <util/delay.h>
+#include "musical_notes.h"
+#include "song_list.h"
+#include "voices.h"
+#include "quantum.h"
+
+// Largely untested PWM audio mode (doesn't sound as good)
+// #define PWM_AUDIO
+
+// #define VIBRATO_ENABLE
+
+// Enable vibrato strength/amplitude - slows down ISR too much
+// #define VIBRATO_STRENGTH_ENABLE
+
+typedef union {
+    uint8_t raw;
+    struct {
+        bool    enable :1;
+        uint8_t level  :7;
+    };
+} audio_config_t;
+
+bool is_audio_on(void);
+void audio_toggle(void);
+void audio_on(void);
+void audio_off(void);
+
+// Vibrato rate functions
+
+#ifdef VIBRATO_ENABLE
+
+void set_vibrato_rate(float rate);
+void increase_vibrato_rate(float change);
+void decrease_vibrato_rate(float change);
+
+#ifdef VIBRATO_STRENGTH_ENABLE
+
+void set_vibrato_strength(float strength);
+void increase_vibrato_strength(float change);
+void decrease_vibrato_strength(float change);
+
+#endif
+
+#endif
+
+// Polyphony functions
+
+void set_polyphony_rate(float rate);
+void enable_polyphony(void);
+void disable_polyphony(void);
+void increase_polyphony_rate(float change);
+void decrease_polyphony_rate(float change);
+
+void set_timbre(float timbre);
+void set_tempo(uint8_t tempo);
+
+void increase_tempo(uint8_t tempo_change);
+void decrease_tempo(uint8_t tempo_change);
+
+void audio_init(void);
+
+#ifdef PWM_AUDIO
+void play_sample(uint8_t * s, uint16_t l, bool r);
+#endif
+void play_note(float freq, int vol);
+void stop_note(float freq);
+void stop_all_notes(void);
+void play_notes(float (*np)[][2], uint16_t n_count, bool n_repeat, float n_rest);
+
+#define SCALE (int8_t []){ 0 + (12*0), 2 + (12*0), 4 + (12*0), 5 + (12*0), 7 + (12*0), 9 + (12*0), 11 + (12*0), \
+                           0 + (12*1), 2 + (12*1), 4 + (12*1), 5 + (12*1), 7 + (12*1), 9 + (12*1), 11 + (12*1), \
+                           0 + (12*2), 2 + (12*2), 4 + (12*2), 5 + (12*2), 7 + (12*2), 9 + (12*2), 11 + (12*2), \
+                           0 + (12*3), 2 + (12*3), 4 + (12*3), 5 + (12*3), 7 + (12*3), 9 + (12*3), 11 + (12*3), \
+                           0 + (12*4), 2 + (12*4), 4 + (12*4), 5 + (12*4), 7 + (12*4), 9 + (12*4), 11 + (12*4), }
+
+// These macros are used to allow play_notes to play an array of indeterminate
+// length. This works around the limitation of C's sizeof operation on pointers.
+// The global float array for the song must be used here.
+#define NOTE_ARRAY_SIZE(x) ((int16_t)(sizeof(x) / (sizeof(x[0]))))
+#define PLAY_NOTE_ARRAY(note_array, note_repeat, note_rest_style) play_notes(&note_array, NOTE_ARRAY_SIZE((note_array)), (note_repeat), (note_rest_style));
+
+
+bool is_playing_notes(void);
+
+#endif
\ No newline at end of file
diff --git a/quantum/audio/audio_pwm.c b/quantum/audio/audio_pwm.c
new file mode 100644
index 000000000..f820eec1b
--- /dev/null
+++ b/quantum/audio/audio_pwm.c
@@ -0,0 +1,643 @@
+#include <stdio.h>
+#include <string.h>
+//#include <math.h>
+#include <avr/pgmspace.h>
+#include <avr/interrupt.h>
+#include <avr/io.h>
+#include "print.h"
+#include "audio.h"
+#include "keymap.h"
+
+#include "eeconfig.h"
+
+#define PI 3.14159265
+
+#define CPU_PRESCALER 8
+
+
+// Timer Abstractions
+
+// TIMSK3 - Timer/Counter #3 Interrupt Mask Register
+// Turn on/off 3A interputs, stopping/enabling the ISR calls
+#define ENABLE_AUDIO_COUNTER_3_ISR TIMSK3 |= _BV(OCIE3A)
+#define DISABLE_AUDIO_COUNTER_3_ISR TIMSK3 &= ~_BV(OCIE3A)
+
+
+// TCCR3A: Timer/Counter #3 Control Register
+// Compare Output Mode (COM3An) = 0b00 = Normal port operation, OC3A disconnected from PC6
+#define ENABLE_AUDIO_COUNTER_3_OUTPUT TCCR3A |= _BV(COM3A1);
+#define DISABLE_AUDIO_COUNTER_3_OUTPUT TCCR3A &= ~(_BV(COM3A1) | _BV(COM3A0));
+
+
+#define NOTE_PERIOD ICR3
+#define NOTE_DUTY_CYCLE OCR3A
+
+
+#ifdef PWM_AUDIO
+    #include "wave.h"
+    #define SAMPLE_DIVIDER 39
+    #define SAMPLE_RATE (2000000.0/SAMPLE_DIVIDER/2048)
+    // Resistor value of 1/ (2 * PI * 10nF * (2000000 hertz / SAMPLE_DIVIDER / 10)) for 10nF cap
+
+    float places[8] = {0, 0, 0, 0, 0, 0, 0, 0};
+    uint16_t place_int = 0;
+    bool repeat = true;
+#endif
+
+void delay_us(int count) {
+  while(count--) {
+    _delay_us(1);
+  }
+}
+
+int voices = 0;
+int voice_place = 0;
+float frequency = 0;
+int volume = 0;
+long position = 0;
+
+float frequencies[8] = {0, 0, 0, 0, 0, 0, 0, 0};
+int volumes[8] = {0, 0, 0, 0, 0, 0, 0, 0};
+bool sliding = false;
+
+float place = 0;
+
+uint8_t * sample;
+uint16_t sample_length = 0;
+// float freq = 0;
+
+bool     playing_notes = false;
+bool     playing_note = false;
+float    note_frequency = 0;
+float    note_length = 0;
+uint8_t  note_tempo = TEMPO_DEFAULT;
+float    note_timbre = TIMBRE_DEFAULT;
+uint16_t note_position = 0;
+float (* notes_pointer)[][2];
+uint16_t notes_count;
+bool     notes_repeat;
+float    notes_rest;
+bool     note_resting = false;
+
+uint8_t current_note = 0;
+uint8_t rest_counter = 0;
+
+#ifdef VIBRATO_ENABLE
+float vibrato_counter = 0;
+float vibrato_strength = .5;
+float vibrato_rate = 0.125;
+#endif
+
+float polyphony_rate = 0;
+
+static bool audio_initialized = false;
+
+audio_config_t audio_config;
+
+uint16_t envelope_index = 0;
+
+void audio_init() {
+
+    // Check EEPROM
+    if (!eeconfig_is_enabled())
+    {
+        eeconfig_init();
+    }
+    audio_config.raw = eeconfig_read_audio();
+
+    #ifdef PWM_AUDIO
+
+        PLLFRQ = _BV(PDIV2);
+        PLLCSR = _BV(PLLE);
+        while(!(PLLCSR & _BV(PLOCK)));
+        PLLFRQ |= _BV(PLLTM0); /* PCK 48MHz */
+
+        /* Init a fast PWM on Timer4 */
+        TCCR4A = _BV(COM4A0) | _BV(PWM4A); /* Clear OC4A on Compare Match */
+        TCCR4B = _BV(CS40); /* No prescaling => f = PCK/256 = 187500Hz */
+        OCR4A = 0;
+
+        /* Enable the OC4A output */
+        DDRC |= _BV(PORTC6);
+
+        DISABLE_AUDIO_COUNTER_3_ISR; // Turn off 3A interputs
+
+        TCCR3A = 0x0; // Options not needed
+        TCCR3B = _BV(CS31) | _BV(CS30) | _BV(WGM32); // 64th prescaling and CTC
+        OCR3A = SAMPLE_DIVIDER - 1; // Correct count/compare, related to sample playback
+
+    #else
+
+        // Set port PC6 (OC3A and /OC4A) as output
+        DDRC |= _BV(PORTC6);
+
+        DISABLE_AUDIO_COUNTER_3_ISR;
+
+                // TCCR3A / TCCR3B: Timer/Counter #3 Control Registers
+                // Compare Output Mode (COM3An) = 0b00 = Normal port operation, OC3A disconnected from PC6
+                // Waveform Generation Mode (WGM3n) = 0b1110 = Fast PWM Mode 14 (Period = ICR3, Duty Cycle = OCR3A)
+                // Clock Select (CS3n) = 0b010 = Clock / 8
+        TCCR3A = (0 << COM3A1) | (0 << COM3A0) | (1 << WGM31) | (0 << WGM30);
+        TCCR3B = (1 << WGM33)  | (1 << WGM32)  | (0 << CS32)  | (1 << CS31) | (0 << CS30);
+
+    #endif
+
+    audio_initialized = true;
+}
+
+void stop_all_notes() {
+    if (!audio_initialized) {
+        audio_init();
+    }
+    voices = 0;
+    #ifdef PWM_AUDIO
+            DISABLE_AUDIO_COUNTER_3_ISR;
+    #else
+        DISABLE_AUDIO_COUNTER_3_ISR;
+        DISABLE_AUDIO_COUNTER_3_OUTPUT;
+    #endif
+
+    playing_notes = false;
+    playing_note = false;
+    frequency = 0;
+    volume = 0;
+
+    for (uint8_t i = 0; i < 8; i++)
+    {
+        frequencies[i] = 0;
+        volumes[i] = 0;
+    }
+}
+
+void stop_note(float freq)
+{
+    if (playing_note) {
+        if (!audio_initialized) {
+            audio_init();
+        }
+        #ifdef PWM_AUDIO
+            freq = freq / SAMPLE_RATE;
+        #endif
+        for (int i = 7; i >= 0; i--) {
+            if (frequencies[i] == freq) {
+                frequencies[i] = 0;
+                volumes[i] = 0;
+                for (int j = i; (j < 7); j++) {
+                    frequencies[j] = frequencies[j+1];
+                    frequencies[j+1] = 0;
+                    volumes[j] = volumes[j+1];
+                    volumes[j+1] = 0;
+                }
+                break;
+            }
+        }
+        voices--;
+        if (voices < 0)
+            voices = 0;
+        if (voice_place >= voices) {
+            voice_place = 0;
+        }
+        if (voices == 0) {
+            #ifdef PWM_AUDIO
+                DISABLE_AUDIO_COUNTER_3_ISR;
+            #else
+                DISABLE_AUDIO_COUNTER_3_ISR;
+                DISABLE_AUDIO_COUNTER_3_OUTPUT;
+            #endif
+            frequency = 0;
+            volume = 0;
+            playing_note = false;
+        }
+    }
+}
+
+#ifdef VIBRATO_ENABLE
+
+float mod(float a, int b)
+{
+    float r = fmod(a, b);
+    return r < 0 ? r + b : r;
+}
+
+float vibrato(float average_freq) {
+    #ifdef VIBRATO_STRENGTH_ENABLE
+        float vibrated_freq = average_freq * pow(vibrato_lut[(int)vibrato_counter], vibrato_strength);
+    #else
+        float vibrated_freq = average_freq * vibrato_lut[(int)vibrato_counter];
+    #endif
+    vibrato_counter = mod((vibrato_counter + vibrato_rate * (1.0 + 440.0/average_freq)), VIBRATO_LUT_LENGTH);
+    return vibrated_freq;
+}
+
+#endif
+
+ISR(TIMER3_COMPA_vect)
+{
+    if (playing_note) {
+        #ifdef PWM_AUDIO
+            if (voices == 1) {
+                // SINE
+                OCR4A = pgm_read_byte(&sinewave[(uint16_t)place]) >> 2;
+
+                // SQUARE
+                // if (((int)place) >= 1024){
+                //     OCR4A = 0xFF >> 2;
+                // } else {
+                //     OCR4A = 0x00;
+                // }
+
+                // SAWTOOTH
+                // OCR4A = (int)place / 4;
+
+                // TRIANGLE
+                // if (((int)place) >= 1024) {
+                //     OCR4A = (int)place / 2;
+                // } else {
+                //     OCR4A = 2048 - (int)place / 2;
+                // }
+
+                place += frequency;
+
+                if (place >= SINE_LENGTH)
+                    place -= SINE_LENGTH;
+
+            } else {
+                int sum = 0;
+                for (int i = 0; i < voices; i++) {
+                    // SINE
+                    sum += pgm_read_byte(&sinewave[(uint16_t)places[i]]) >> 2;
+
+                    // SQUARE
+                    // if (((int)places[i]) >= 1024){
+                    //     sum += 0xFF >> 2;
+                    // } else {
+                    //     sum += 0x00;
+                    // }
+
+                    places[i] += frequencies[i];
+
+                    if (places[i] >= SINE_LENGTH)
+                        places[i] -= SINE_LENGTH;
+                }
+                OCR4A = sum;
+            }
+        #else
+            if (voices > 0) {
+                float freq;
+                if (polyphony_rate > 0) {
+                    if (voices > 1) {
+                        voice_place %= voices;
+                        if (place++ > (frequencies[voice_place] / polyphony_rate / CPU_PRESCALER)) {
+                            voice_place = (voice_place + 1) % voices;
+                            place = 0.0;
+                        }
+                    }
+                    #ifdef VIBRATO_ENABLE
+                    if (vibrato_strength > 0) {
+                        freq = vibrato(frequencies[voice_place]);
+                    } else {
+                    #else
+                    {
+                    #endif
+                        freq = frequencies[voice_place];
+                    }
+                } else {
+                    if (frequency != 0 && frequency < frequencies[voices - 1] && frequency < frequencies[voices - 1] * pow(2, -440/frequencies[voices - 1]/12/2)) {
+                        frequency = frequency * pow(2, 440/frequency/12/2);
+                    } else if (frequency != 0 && frequency > frequencies[voices - 1] && frequency > frequencies[voices - 1] * pow(2, 440/frequencies[voices - 1]/12/2)) {
+                        frequency = frequency * pow(2, -440/frequency/12/2);
+                    } else {
+                        frequency = frequencies[voices - 1];
+                    }
+
+
+                    #ifdef VIBRATO_ENABLE
+                    if (vibrato_strength > 0) {
+                        freq = vibrato(frequency);
+                    } else {
+                    #else
+                    {
+                    #endif
+                        freq = frequency;
+                    }
+                }
+
+                if (envelope_index < 65535) {
+                    envelope_index++;
+                }
+                freq = voice_envelope(freq);
+
+                if (freq < 30.517578125)
+                    freq = 30.52;
+                NOTE_PERIOD = (int)(((double)F_CPU) / (freq * CPU_PRESCALER)); // Set max to the period
+                NOTE_DUTY_CYCLE = (int)((((double)F_CPU) / (freq * CPU_PRESCALER)) * note_timbre); // Set compare to half the period
+            }
+        #endif
+    }
+
+    // SAMPLE
+    // OCR4A = pgm_read_byte(&sample[(uint16_t)place_int]);
+
+    // place_int++;
+
+    // if (place_int >= sample_length)
+    //     if (repeat)
+    //         place_int -= sample_length;
+    //     else
+    //         DISABLE_AUDIO_COUNTER_3_ISR;
+
+
+    if (playing_notes) {
+        #ifdef PWM_AUDIO
+            OCR4A = pgm_read_byte(&sinewave[(uint16_t)place]) >> 0;
+
+            place += note_frequency;
+            if (place >= SINE_LENGTH)
+                place -= SINE_LENGTH;
+        #else
+            if (note_frequency > 0) {
+                float freq;
+
+                #ifdef VIBRATO_ENABLE
+                if (vibrato_strength > 0) {
+                    freq = vibrato(note_frequency);
+                } else {
+                #else
+                {
+                #endif
+                    freq = note_frequency;
+                }
+
+                if (envelope_index < 65535) {
+                    envelope_index++;
+                }
+                freq = voice_envelope(freq);
+
+                NOTE_PERIOD = (int)(((double)F_CPU) / (freq * CPU_PRESCALER)); // Set max to the period
+                NOTE_DUTY_CYCLE = (int)((((double)F_CPU) / (freq * CPU_PRESCALER)) * note_timbre); // Set compare to half the period
+            } else {
+                NOTE_PERIOD = 0;
+                NOTE_DUTY_CYCLE = 0;
+            }
+        #endif
+
+
+        note_position++;
+        bool end_of_note = false;
+        if (NOTE_PERIOD > 0)
+            end_of_note = (note_position >= (note_length / NOTE_PERIOD * 0xFFFF));
+        else
+            end_of_note = (note_position >= (note_length * 0x7FF));
+        if (end_of_note) {
+            current_note++;
+            if (current_note >= notes_count) {
+                if (notes_repeat) {
+                    current_note = 0;
+                } else {
+                    #ifdef PWM_AUDIO
+                        DISABLE_AUDIO_COUNTER_3_ISR;
+                    #else
+                        DISABLE_AUDIO_COUNTER_3_ISR;
+                        DISABLE_AUDIO_COUNTER_3_OUTPUT;
+                    #endif
+                    playing_notes = false;
+                    return;
+                }
+            }
+            if (!note_resting && (notes_rest > 0)) {
+                note_resting = true;
+                note_frequency = 0;
+                note_length = notes_rest;
+                current_note--;
+            } else {
+                note_resting = false;
+                #ifdef PWM_AUDIO
+                    note_frequency = (*notes_pointer)[current_note][0] / SAMPLE_RATE;
+                    note_length = (*notes_pointer)[current_note][1] * (((float)note_tempo) / 100);
+                #else
+                    envelope_index = 0;
+                    note_frequency = (*notes_pointer)[current_note][0];
+                    note_length = ((*notes_pointer)[current_note][1] / 4) * (((float)note_tempo) / 100);
+                #endif
+            }
+            note_position = 0;
+        }
+
+    }
+
+    if (!audio_config.enable) {
+        playing_notes = false;
+        playing_note = false;
+    }
+}
+
+void play_note(float freq, int vol) {
+
+    if (!audio_initialized) {
+        audio_init();
+    }
+
+        if (audio_config.enable && voices < 8) {
+            DISABLE_AUDIO_COUNTER_3_ISR;
+
+            // Cancel notes if notes are playing
+            if (playing_notes)
+                stop_all_notes();
+
+            playing_note = true;
+
+            envelope_index = 0;
+
+            #ifdef PWM_AUDIO
+                freq = freq / SAMPLE_RATE;
+            #endif
+            if (freq > 0) {
+                frequencies[voices] = freq;
+                volumes[voices] = vol;
+                voices++;
+            }
+
+            #ifdef PWM_AUDIO
+                ENABLE_AUDIO_COUNTER_3_ISR;
+            #else
+                ENABLE_AUDIO_COUNTER_3_ISR;
+                ENABLE_AUDIO_COUNTER_3_OUTPUT;
+            #endif
+        }
+
+}
+
+void play_notes(float (*np)[][2], uint16_t n_count, bool n_repeat, float n_rest)
+{
+
+    if (!audio_initialized) {
+        audio_init();
+    }
+
+        if (audio_config.enable) {
+
+            DISABLE_AUDIO_COUNTER_3_ISR;
+
+                // Cancel note if a note is playing
+            if (playing_note)
+                stop_all_notes();
+
+            playing_notes = true;
+
+            notes_pointer = np;
+            notes_count = n_count;
+            notes_repeat = n_repeat;
+            notes_rest = n_rest;
+
+            place = 0;
+            current_note = 0;
+
+            #ifdef PWM_AUDIO
+                note_frequency = (*notes_pointer)[current_note][0] / SAMPLE_RATE;
+                note_length = (*notes_pointer)[current_note][1] * (((float)note_tempo) / 100);
+            #else
+                note_frequency = (*notes_pointer)[current_note][0];
+                note_length = ((*notes_pointer)[current_note][1] / 4) * (((float)note_tempo) / 100);
+            #endif
+            note_position = 0;
+
+
+            #ifdef PWM_AUDIO
+                ENABLE_AUDIO_COUNTER_3_ISR;
+            #else
+                ENABLE_AUDIO_COUNTER_3_ISR;
+                ENABLE_AUDIO_COUNTER_3_OUTPUT;
+            #endif
+        }
+
+}
+
+#ifdef PWM_AUDIO
+void play_sample(uint8_t * s, uint16_t l, bool r) {
+    if (!audio_initialized) {
+        audio_init();
+    }
+
+    if (audio_config.enable) {
+        DISABLE_AUDIO_COUNTER_3_ISR;
+        stop_all_notes();
+        place_int = 0;
+        sample = s;
+        sample_length = l;
+        repeat = r;
+
+        ENABLE_AUDIO_COUNTER_3_ISR;
+    }
+}
+#endif
+
+
+void audio_toggle(void) {
+    audio_config.enable ^= 1;
+    eeconfig_update_audio(audio_config.raw);
+}
+
+void audio_on(void) {
+    audio_config.enable = 1;
+    eeconfig_update_audio(audio_config.raw);
+}
+
+void audio_off(void) {
+    audio_config.enable = 0;
+    eeconfig_update_audio(audio_config.raw);
+}
+
+#ifdef VIBRATO_ENABLE
+
+// Vibrato rate functions
+
+void set_vibrato_rate(float rate) {
+    vibrato_rate = rate;
+}
+
+void increase_vibrato_rate(float change) {
+    vibrato_rate *= change;
+}
+
+void decrease_vibrato_rate(float change) {
+    vibrato_rate /= change;
+}
+
+#ifdef VIBRATO_STRENGTH_ENABLE
+
+void set_vibrato_strength(float strength) {
+    vibrato_strength = strength;
+}
+
+void increase_vibrato_strength(float change) {
+    vibrato_strength *= change;
+}
+
+void decrease_vibrato_strength(float change) {
+    vibrato_strength /= change;
+}
+
+#endif  /* VIBRATO_STRENGTH_ENABLE */
+
+#endif /* VIBRATO_ENABLE */
+
+// Polyphony functions
+
+void set_polyphony_rate(float rate) {
+    polyphony_rate = rate;
+}
+
+void enable_polyphony() {
+    polyphony_rate = 5;
+}
+
+void disable_polyphony() {
+    polyphony_rate = 0;
+}
+
+void increase_polyphony_rate(float change) {
+    polyphony_rate *= change;
+}
+
+void decrease_polyphony_rate(float change) {
+    polyphony_rate /= change;
+}
+
+// Timbre function
+
+void set_timbre(float timbre) {
+    note_timbre = timbre;
+}
+
+// Tempo functions
+
+void set_tempo(uint8_t tempo) {
+    note_tempo = tempo;
+}
+
+void decrease_tempo(uint8_t tempo_change) {
+    note_tempo += tempo_change;
+}
+
+void increase_tempo(uint8_t tempo_change) {
+    if (note_tempo - tempo_change < 10) {
+        note_tempo = 10;
+    } else {
+        note_tempo -= tempo_change;
+    }
+}
+
+
+//------------------------------------------------------------------------------
+// Override these functions in your keymap file to play different tunes on
+// startup and bootloader jump
+__attribute__ ((weak))
+void play_startup_tone()
+{
+}
+
+__attribute__ ((weak))
+void play_goodbye_tone()
+{
+}
+//------------------------------------------------------------------------------
diff --git a/quantum/audio/luts.c b/quantum/audio/luts.c
new file mode 100644
index 000000000..9f3de9a05
--- /dev/null
+++ b/quantum/audio/luts.c
@@ -0,0 +1,382 @@
+#include <avr/io.h>
+#include <avr/interrupt.h>
+#include <avr/pgmspace.h>
+#include "luts.h"
+
+const float vibrato_lut[VIBRATO_LUT_LENGTH] =
+{
+        1.0022336811487,
+        1.0042529943610,
+        1.0058584256028,
+        1.0068905285205,
+        1.0072464122237,
+        1.0068905285205,
+        1.0058584256028,
+        1.0042529943610,
+        1.0022336811487,
+        1.0000000000000,
+        0.9977712970630,
+        0.9957650169978,
+        0.9941756956510,
+        0.9931566259436,
+        0.9928057204913,
+        0.9931566259436,
+        0.9941756956510,
+        0.9957650169978,
+        0.9977712970630,
+        1.0000000000000,
+};
+
+const uint16_t frequency_lut[FREQUENCY_LUT_LENGTH] =
+{
+        0x8E0B,
+        0x8C02,
+        0x8A00,
+        0x8805,
+        0x8612,
+        0x8426,
+        0x8241,
+        0x8063,
+        0x7E8C,
+        0x7CBB,
+        0x7AF2,
+        0x792E,
+        0x7772,
+        0x75BB,
+        0x740B,
+        0x7261,
+        0x70BD,
+        0x6F20,
+        0x6D88,
+        0x6BF6,
+        0x6A69,
+        0x68E3,
+        0x6762,
+        0x65E6,
+        0x6470,
+        0x6300,
+        0x6194,
+        0x602E,
+        0x5ECD,
+        0x5D71,
+        0x5C1A,
+        0x5AC8,
+        0x597B,
+        0x5833,
+        0x56EF,
+        0x55B0,
+        0x5475,
+        0x533F,
+        0x520E,
+        0x50E1,
+        0x4FB8,
+        0x4E93,
+        0x4D73,
+        0x4C57,
+        0x4B3E,
+        0x4A2A,
+        0x491A,
+        0x480E,
+        0x4705,
+        0x4601,
+        0x4500,
+        0x4402,
+        0x4309,
+        0x4213,
+        0x4120,
+        0x4031,
+        0x3F46,
+        0x3E5D,
+        0x3D79,
+        0x3C97,
+        0x3BB9,
+        0x3ADD,
+        0x3A05,
+        0x3930,
+        0x385E,
+        0x3790,
+        0x36C4,
+        0x35FB,
+        0x3534,
+        0x3471,
+        0x33B1,
+        0x32F3,
+        0x3238,
+        0x3180,
+        0x30CA,
+        0x3017,
+        0x2F66,
+        0x2EB8,
+        0x2E0D,
+        0x2D64,
+        0x2CBD,
+        0x2C19,
+        0x2B77,
+        0x2AD8,
+        0x2A3A,
+        0x299F,
+        0x2907,
+        0x2870,
+        0x27DC,
+        0x2749,
+        0x26B9,
+        0x262B,
+        0x259F,
+        0x2515,
+        0x248D,
+        0x2407,
+        0x2382,
+        0x2300,
+        0x2280,
+        0x2201,
+        0x2184,
+        0x2109,
+        0x2090,
+        0x2018,
+        0x1FA3,
+        0x1F2E,
+        0x1EBC,
+        0x1E4B,
+        0x1DDC,
+        0x1D6E,
+        0x1D02,
+        0x1C98,
+        0x1C2F,
+        0x1BC8,
+        0x1B62,
+        0x1AFD,
+        0x1A9A,
+        0x1A38,
+        0x19D8,
+        0x1979,
+        0x191C,
+        0x18C0,
+        0x1865,
+        0x180B,
+        0x17B3,
+        0x175C,
+        0x1706,
+        0x16B2,
+        0x165E,
+        0x160C,
+        0x15BB,
+        0x156C,
+        0x151D,
+        0x14CF,
+        0x1483,
+        0x1438,
+        0x13EE,
+        0x13A4,
+        0x135C,
+        0x1315,
+        0x12CF,
+        0x128A,
+        0x1246,
+        0x1203,
+        0x11C1,
+        0x1180,
+        0x1140,
+        0x1100,
+        0x10C2,
+        0x1084,
+        0x1048,
+        0x100C,
+        0xFD1,
+        0xF97,
+        0xF5E,
+        0xF25,
+        0xEEE,
+        0xEB7,
+        0xE81,
+        0xE4C,
+        0xE17,
+        0xDE4,
+        0xDB1,
+        0xD7E,
+        0xD4D,
+        0xD1C,
+        0xCEC,
+        0xCBC,
+        0xC8E,
+        0xC60,
+        0xC32,
+        0xC05,
+        0xBD9,
+        0xBAE,
+        0xB83,
+        0xB59,
+        0xB2F,
+        0xB06,
+        0xADD,
+        0xAB6,
+        0xA8E,
+        0xA67,
+        0xA41,
+        0xA1C,
+        0x9F7,
+        0x9D2,
+        0x9AE,
+        0x98A,
+        0x967,
+        0x945,
+        0x923,
+        0x901,
+        0x8E0,
+        0x8C0,
+        0x8A0,
+        0x880,
+        0x861,
+        0x842,
+        0x824,
+        0x806,
+        0x7E8,
+        0x7CB,
+        0x7AF,
+        0x792,
+        0x777,
+        0x75B,
+        0x740,
+        0x726,
+        0x70B,
+        0x6F2,
+        0x6D8,
+        0x6BF,
+        0x6A6,
+        0x68E,
+        0x676,
+        0x65E,
+        0x647,
+        0x630,
+        0x619,
+        0x602,
+        0x5EC,
+        0x5D7,
+        0x5C1,
+        0x5AC,
+        0x597,
+        0x583,
+        0x56E,
+        0x55B,
+        0x547,
+        0x533,
+        0x520,
+        0x50E,
+        0x4FB,
+        0x4E9,
+        0x4D7,
+        0x4C5,
+        0x4B3,
+        0x4A2,
+        0x491,
+        0x480,
+        0x470,
+        0x460,
+        0x450,
+        0x440,
+        0x430,
+        0x421,
+        0x412,
+        0x403,
+        0x3F4,
+        0x3E5,
+        0x3D7,
+        0x3C9,
+        0x3BB,
+        0x3AD,
+        0x3A0,
+        0x393,
+        0x385,
+        0x379,
+        0x36C,
+        0x35F,
+        0x353,
+        0x347,
+        0x33B,
+        0x32F,
+        0x323,
+        0x318,
+        0x30C,
+        0x301,
+        0x2F6,
+        0x2EB,
+        0x2E0,
+        0x2D6,
+        0x2CB,
+        0x2C1,
+        0x2B7,
+        0x2AD,
+        0x2A3,
+        0x299,
+        0x290,
+        0x287,
+        0x27D,
+        0x274,
+        0x26B,
+        0x262,
+        0x259,
+        0x251,
+        0x248,
+        0x240,
+        0x238,
+        0x230,
+        0x228,
+        0x220,
+        0x218,
+        0x210,
+        0x209,
+        0x201,
+        0x1FA,
+        0x1F2,
+        0x1EB,
+        0x1E4,
+        0x1DD,
+        0x1D6,
+        0x1D0,
+        0x1C9,
+        0x1C2,
+        0x1BC,
+        0x1B6,
+        0x1AF,
+        0x1A9,
+        0x1A3,
+        0x19D,
+        0x197,
+        0x191,
+        0x18C,
+        0x186,
+        0x180,
+        0x17B,
+        0x175,
+        0x170,
+        0x16B,
+        0x165,
+        0x160,
+        0x15B,
+        0x156,
+        0x151,
+        0x14C,
+        0x148,
+        0x143,
+        0x13E,
+        0x13A,
+        0x135,
+        0x131,
+        0x12C,
+        0x128,
+        0x124,
+        0x120,
+        0x11C,
+        0x118,
+        0x114,
+        0x110,
+        0x10C,
+        0x108,
+        0x104,
+        0x100,
+        0xFD,
+        0xF9,
+        0xF5,
+        0xF2,
+        0xEE,
+};
+
diff --git a/quantum/audio/luts.h b/quantum/audio/luts.h
new file mode 100644
index 000000000..7df3078a7
--- /dev/null
+++ b/quantum/audio/luts.h
@@ -0,0 +1,15 @@
+#include <avr/io.h>
+#include <avr/interrupt.h>
+#include <avr/pgmspace.h>
+
+#ifndef LUTS_H
+#define LUTS_H
+
+#define VIBRATO_LUT_LENGTH 20
+
+#define FREQUENCY_LUT_LENGTH 349
+
+extern const float vibrato_lut[VIBRATO_LUT_LENGTH];
+extern const uint16_t frequency_lut[FREQUENCY_LUT_LENGTH];
+
+#endif /* LUTS_H */
\ No newline at end of file
diff --git a/quantum/audio/musical_notes.h b/quantum/audio/musical_notes.h
new file mode 100644
index 000000000..b08d16a6f
--- /dev/null
+++ b/quantum/audio/musical_notes.h
@@ -0,0 +1,217 @@
+#ifndef MUSICAL_NOTES_H
+#define MUSICAL_NOTES_H
+
+// Tempo Placeholder
+#define TEMPO_DEFAULT 100
+
+
+#define SONG(notes...) { notes }
+
+
+// Note Types
+#define MUSICAL_NOTE(note, duration)   {(NOTE##note), duration}
+#define WHOLE_NOTE(note)               MUSICAL_NOTE(note, 64)
+#define HALF_NOTE(note)                MUSICAL_NOTE(note, 32)
+#define QUARTER_NOTE(note)             MUSICAL_NOTE(note, 16)
+#define EIGHTH_NOTE(note)              MUSICAL_NOTE(note,  8)
+#define SIXTEENTH_NOTE(note)           MUSICAL_NOTE(note,  4)
+
+#define WHOLE_DOT_NOTE(note)           MUSICAL_NOTE(note, 64+32)
+#define HALF_DOT_NOTE(note)            MUSICAL_NOTE(note, 32+16)
+#define QUARTER_DOT_NOTE(note)         MUSICAL_NOTE(note, 16+8)
+#define EIGHTH_DOT_NOTE(note)          MUSICAL_NOTE(note,  8+4)
+#define SIXTEENTH_DOT_NOTE(note)       MUSICAL_NOTE(note,  4+2)
+
+// Note Type Shortcuts
+#define M__NOTE(note, duration)        MUSICAL_NOTE(note, duration)
+#define W__NOTE(n)                     WHOLE_NOTE(n)
+#define H__NOTE(n)                     HALF_NOTE(n)
+#define Q__NOTE(n)                     QUARTER_NOTE(n)
+#define E__NOTE(n)                     EIGHTH_NOTE(n)
+#define S__NOTE(n)                     SIXTEENTH_NOTE(n)
+#define WD_NOTE(n)                     WHOLE_DOT_NOTE(n)
+#define HD_NOTE(n)                     HALF_DOT_NOTE(n)
+#define QD_NOTE(n)                     QUARTER_DOT_NOTE(n)
+#define ED_NOTE(n)                     EIGHTH_DOT_NOTE(n)
+#define SD_NOTE(n)                     SIXTEENTH_DOT_NOTE(n)
+
+// Note Styles
+// Staccato makes sure there is a rest between each note. Think: TA TA TA
+// Legato makes notes flow together. Think: TAAA
+#define STACCATO 0.01
+#define LEGATO   0
+
+// Note Timbre
+// Changes how the notes sound
+#define TIMBRE_12       0.125
+#define TIMBRE_25       0.250
+#define TIMBRE_50       0.500
+#define TIMBRE_75       0.750
+#define TIMBRE_DEFAULT  TIMBRE_50
+
+
+// Notes - # = Octave
+
+#define NOTE_REST         0.00
+
+/* These notes are currently bugged
+#define NOTE_C0          16.35
+#define NOTE_CS0         17.32
+#define NOTE_D0          18.35
+#define NOTE_DS0         19.45
+#define NOTE_E0          20.60
+#define NOTE_F0          21.83
+#define NOTE_FS0         23.12
+#define NOTE_G0          24.50
+#define NOTE_GS0         25.96
+#define NOTE_A0          27.50
+#define NOTE_AS0         29.14
+#define NOTE_B0          30.87
+#define NOTE_C1          32.70
+#define NOTE_CS1         34.65
+#define NOTE_D1          36.71
+#define NOTE_DS1         38.89
+#define NOTE_E1          41.20
+#define NOTE_F1          43.65
+#define NOTE_FS1         46.25
+#define NOTE_G1          49.00
+#define NOTE_GS1         51.91
+#define NOTE_A1          55.00
+#define NOTE_AS1         58.27
+*/
+
+#define NOTE_B1          61.74
+#define NOTE_C2          65.41
+#define NOTE_CS2         69.30
+#define NOTE_D2          73.42
+#define NOTE_DS2         77.78
+#define NOTE_E2          82.41
+#define NOTE_F2          87.31
+#define NOTE_FS2         92.50
+#define NOTE_G2          98.00
+#define NOTE_GS2        103.83
+#define NOTE_A2         110.00
+#define NOTE_AS2        116.54
+#define NOTE_B2         123.47
+#define NOTE_C3         130.81
+#define NOTE_CS3        138.59
+#define NOTE_D3         146.83
+#define NOTE_DS3        155.56
+#define NOTE_E3         164.81
+#define NOTE_F3         174.61
+#define NOTE_FS3        185.00
+#define NOTE_G3         196.00
+#define NOTE_GS3        207.65
+#define NOTE_A3         220.00
+#define NOTE_AS3        233.08
+#define NOTE_B3         246.94
+#define NOTE_C4         261.63
+#define NOTE_CS4        277.18
+#define NOTE_D4         293.66
+#define NOTE_DS4        311.13
+#define NOTE_E4         329.63
+#define NOTE_F4         349.23
+#define NOTE_FS4        369.99
+#define NOTE_G4         392.00
+#define NOTE_GS4        415.30
+#define NOTE_A4         440.00
+#define NOTE_AS4        466.16
+#define NOTE_B4         493.88
+#define NOTE_C5         523.25
+#define NOTE_CS5        554.37
+#define NOTE_D5         587.33
+#define NOTE_DS5        622.25
+#define NOTE_E5         659.26
+#define NOTE_F5         698.46
+#define NOTE_FS5        739.99
+#define NOTE_G5         783.99
+#define NOTE_GS5        830.61
+#define NOTE_A5         880.00
+#define NOTE_AS5        932.33
+#define NOTE_B5         987.77
+#define NOTE_C6        1046.50
+#define NOTE_CS6       1108.73
+#define NOTE_D6        1174.66
+#define NOTE_DS6       1244.51
+#define NOTE_E6        1318.51
+#define NOTE_F6        1396.91
+#define NOTE_FS6       1479.98
+#define NOTE_G6        1567.98
+#define NOTE_GS6       1661.22
+#define NOTE_A6        1760.00
+#define NOTE_AS6       1864.66
+#define NOTE_B6        1975.53
+#define NOTE_C7        2093.00
+#define NOTE_CS7       2217.46
+#define NOTE_D7        2349.32
+#define NOTE_DS7       2489.02
+#define NOTE_E7        2637.02
+#define NOTE_F7        2793.83
+#define NOTE_FS7       2959.96
+#define NOTE_G7        3135.96
+#define NOTE_GS7       3322.44
+#define NOTE_A7        3520.00
+#define NOTE_AS7       3729.31
+#define NOTE_B7        3951.07
+#define NOTE_C8        4186.01
+#define NOTE_CS8       4434.92
+#define NOTE_D8        4698.64
+#define NOTE_DS8       4978.03
+#define NOTE_E8        5274.04
+#define NOTE_F8        5587.65
+#define NOTE_FS8       5919.91
+#define NOTE_G8        6271.93
+#define NOTE_GS8       6644.88
+#define NOTE_A8        7040.00
+#define NOTE_AS8       7458.62
+#define NOTE_B8        7902.13
+
+// Flat Aliases
+#define NOTE_DF0 NOTE_CS0
+#define NOTE_EF0 NOTE_DS0
+#define NOTE_GF0 NOTE_FS0
+#define NOTE_AF0 NOTE_GS0
+#define NOTE_BF0 NOTE_AS0
+#define NOTE_DF1 NOTE_CS1
+#define NOTE_EF1 NOTE_DS1
+#define NOTE_GF1 NOTE_FS1
+#define NOTE_AF1 NOTE_GS1
+#define NOTE_BF1 NOTE_AS1
+#define NOTE_DF2 NOTE_CS2
+#define NOTE_EF2 NOTE_DS2
+#define NOTE_GF2 NOTE_FS2
+#define NOTE_AF2 NOTE_GS2
+#define NOTE_BF2 NOTE_AS2
+#define NOTE_DF3 NOTE_CS3
+#define NOTE_EF3 NOTE_DS3
+#define NOTE_GF3 NOTE_FS3
+#define NOTE_AF3 NOTE_GS3
+#define NOTE_BF3 NOTE_AS3
+#define NOTE_DF4 NOTE_CS4
+#define NOTE_EF4 NOTE_DS4
+#define NOTE_GF4 NOTE_FS4
+#define NOTE_AF4 NOTE_GS4
+#define NOTE_BF4 NOTE_AS4
+#define NOTE_DF5 NOTE_CS5
+#define NOTE_EF5 NOTE_DS5
+#define NOTE_GF5 NOTE_FS5
+#define NOTE_AF5 NOTE_GS5
+#define NOTE_BF5 NOTE_AS5
+#define NOTE_DF6 NOTE_CS6
+#define NOTE_EF6 NOTE_DS6
+#define NOTE_GF6 NOTE_FS6
+#define NOTE_AF6 NOTE_GS6
+#define NOTE_BF6 NOTE_AS6
+#define NOTE_DF7 NOTE_CS7
+#define NOTE_EF7 NOTE_DS7
+#define NOTE_GF7 NOTE_FS7
+#define NOTE_AF7 NOTE_GS7
+#define NOTE_BF7 NOTE_AS7
+#define NOTE_DF8 NOTE_CS8
+#define NOTE_EF8 NOTE_DS8
+#define NOTE_GF8 NOTE_FS8
+#define NOTE_AF8 NOTE_GS8
+#define NOTE_BF8 NOTE_AS8
+
+
+#endif
\ No newline at end of file
diff --git a/quantum/audio/song_list.h b/quantum/audio/song_list.h
new file mode 100644
index 000000000..8022ca672
--- /dev/null
+++ b/quantum/audio/song_list.h
@@ -0,0 +1,125 @@
+#include "musical_notes.h"
+
+#ifndef SONG_LIST_H
+#define SONG_LIST_H
+
+#define ODE_TO_JOY                                          \
+    Q__NOTE(_E4), Q__NOTE(_E4), Q__NOTE(_F4), Q__NOTE(_G4), \
+    Q__NOTE(_G4), Q__NOTE(_F4), Q__NOTE(_E4), Q__NOTE(_D4), \
+    Q__NOTE(_C4), Q__NOTE(_C4), Q__NOTE(_D4), Q__NOTE(_E4), \
+    QD_NOTE(_E4), E__NOTE(_D4), H__NOTE(_D4),
+
+#define ROCK_A_BYE_BABY                            \
+    QD_NOTE(_B4), E__NOTE(_D4), Q__NOTE(_B5),      \
+    H__NOTE(_A5), Q__NOTE(_G5),                    \
+    QD_NOTE(_B4), E__NOTE(_D5), Q__NOTE(_G5),      \
+    H__NOTE(_FS5),
+
+#define CLOSE_ENCOUNTERS_5_NOTE  \
+        Q__NOTE(_D5),                \
+        Q__NOTE(_E5),                \
+        Q__NOTE(_C5),                \
+        Q__NOTE(_C4),                \
+        Q__NOTE(_G4),
+
+#define DOE_A_DEER              \
+        QD_NOTE(_C4), E__NOTE(_D4), \
+        QD_NOTE(_E4), E__NOTE(_C4), \
+        Q__NOTE(_E4), Q__NOTE(_C4), \
+        Q__NOTE(_E4),
+
+/* Requires: PLAY_NOTE_ARRAY(..., ..., STACCATO); */
+#define IN_LIKE_FLINT \
+    E__NOTE(_AS4), E__NOTE(_AS4), QD_NOTE(_B4),  \
+    E__NOTE(_AS4), E__NOTE(_B4),  QD_NOTE(_CS4), \
+    E__NOTE(_B4),  E__NOTE(_CS4), QD_NOTE(_DS4), \
+    E__NOTE(_CS4), E__NOTE(_B4),  QD_NOTE(_AS4), \
+    E__NOTE(_AS4), E__NOTE(_AS4), QD_NOTE(_B4),
+
+#define GOODBYE_SOUND \
+    E__NOTE(_E7),     \
+    E__NOTE(_A6),     \
+    ED_NOTE(_E6),
+
+#define STARTUP_SOUND  \
+    ED_NOTE(_E7 ),     \
+    E__NOTE(_CS7),     \
+    E__NOTE(_E6 ),     \
+    E__NOTE(_A6 ),     \
+    M__NOTE(_CS7, 20),
+
+#define QWERTY_SOUND \
+    E__NOTE(_GS6 ),  \
+    E__NOTE(_A6  ),  \
+    S__NOTE(_REST),  \
+    Q__NOTE(_E7  ),
+
+#define COLEMAK_SOUND \
+    E__NOTE(_GS6 ),   \
+    E__NOTE(_A6  ),   \
+    S__NOTE(_REST),   \
+    ED_NOTE(_E7  ),   \
+    S__NOTE(_REST),   \
+    ED_NOTE(_GS7 ),
+
+#define DVORAK_SOUND \
+    E__NOTE(_GS6 ),  \
+    E__NOTE(_A6  ),  \
+    S__NOTE(_REST),  \
+    E__NOTE(_E7  ),  \
+    S__NOTE(_REST),  \
+    E__NOTE(_FS7 ),  \
+    S__NOTE(_REST),  \
+    E__NOTE(_E7  ),
+
+#define PLOVER_SOUND \
+    E__NOTE(_GS6 ),  \
+    E__NOTE(_A6  ),  \
+    S__NOTE(_REST),  \
+    ED_NOTE(_E7  ),  \
+    S__NOTE(_REST),  \
+    ED_NOTE(_A7  ),
+
+#define PLOVER_GOODBYE_SOUND \
+    E__NOTE(_GS6 ),  \
+    E__NOTE(_A6  ),  \
+    S__NOTE(_REST),  \
+    ED_NOTE(_A7  ),  \
+    S__NOTE(_REST),  \
+    ED_NOTE(_E7  ),
+
+#define MUSIC_SCALE_SOUND \
+    E__NOTE(_A5 ),        \
+    E__NOTE(_B5 ),        \
+    E__NOTE(_CS6),        \
+    E__NOTE(_D6 ),        \
+    E__NOTE(_E6 ),        \
+    E__NOTE(_FS6),        \
+    E__NOTE(_GS6),        \
+    E__NOTE(_A6 ),
+
+#define CAPS_LOCK_ON_SOUND \
+    E__NOTE(_A3),          \
+    E__NOTE(_B3),
+
+#define CAPS_LOCK_OFF_SOUND \
+    E__NOTE(_B3),           \
+    E__NOTE(_A3),
+
+#define SCROLL_LOCK_ON_SOUND \
+    E__NOTE(_D4),            \
+    E__NOTE(_E4),
+
+#define SCROLL_LOCK_OFF_SOUND \
+    E__NOTE(_E4),             \
+    E__NOTE(_D4),
+
+#define NUM_LOCK_ON_SOUND \
+    E__NOTE(_D5),         \
+    E__NOTE(_E5),
+
+#define NUM_LOCK_OFF_SOUND \
+    E__NOTE(_E5),          \
+    E__NOTE(_D5),
+
+#endif
diff --git a/quantum/audio/voices.c b/quantum/audio/voices.c
new file mode 100644
index 000000000..6d4172a06
--- /dev/null
+++ b/quantum/audio/voices.c
@@ -0,0 +1,165 @@
+#include "voices.h"
+#include "audio.h"
+#include "stdlib.h"
+
+// these are imported from audio.c
+extern uint16_t envelope_index;
+extern float note_timbre;
+extern float polyphony_rate;
+
+voice_type voice = default_voice;
+
+void set_voice(voice_type v) {
+    voice = v;
+}
+
+void voice_iterate() {
+    voice = (voice + 1) % number_of_voices;
+}
+
+void voice_deiterate() {
+    voice = (voice - 1) % number_of_voices;
+}
+
+float voice_envelope(float frequency) {
+    // envelope_index ranges from 0 to 0xFFFF, which is preserved at 880.0 Hz
+    uint16_t compensated_index = (uint16_t)((float)envelope_index * (880.0 / frequency));
+
+    switch (voice) {
+        case default_voice:
+            note_timbre = TIMBRE_50;
+            polyphony_rate = 0;
+                break;
+
+        case butts_fader:
+            polyphony_rate = 0;
+            switch (compensated_index) {
+                case 0 ... 9:
+                    frequency = frequency / 4;
+                    note_timbre = TIMBRE_12;
+                        break;
+
+                case 10 ... 19:
+                    frequency = frequency / 2;
+                    note_timbre = TIMBRE_12;
+                        break;
+
+                case 20 ... 200:
+                    note_timbre = .125 - pow(((float)compensated_index - 20) / (200 - 20), 2)*.125;
+                        break;
+
+                default:
+                    note_timbre = 0;
+                        break;
+            }
+            break;
+
+        // case octave_crunch:
+        //     polyphony_rate = 0;
+        //     switch (compensated_index) {
+        //         case 0 ... 9:
+        //         case 20 ... 24:
+        //         case 30 ... 32:
+        //             frequency = frequency / 2;
+        //             note_timbre = TIMBRE_12;
+        //         break;
+
+        //         case 10 ... 19:
+        //         case 25 ... 29:
+        //         case 33 ... 35:
+        //             frequency = frequency * 2;
+        //             note_timbre = TIMBRE_12;
+               //          break;
+
+        //         default:
+        //             note_timbre = TIMBRE_12;
+        //              break;
+        //     }
+               //  break;
+
+        case duty_osc:
+            // This slows the loop down a substantial amount, so higher notes may freeze
+            polyphony_rate = 0;
+            switch (compensated_index) {
+                default:
+                    #define OCS_SPEED 10
+                    #define OCS_AMP   .25
+                    // sine wave is slow
+                    // note_timbre = (sin((float)compensated_index/10000*OCS_SPEED) * OCS_AMP / 2) + .5;
+                    // triangle wave is a bit faster
+                    note_timbre = (float)abs((compensated_index*OCS_SPEED % 3000) - 1500) * ( OCS_AMP / 1500 ) + (1 - OCS_AMP) / 2;
+                        break;
+            }
+                break;
+
+        case duty_octave_down:
+            polyphony_rate = 0;
+            note_timbre = (envelope_index % 2) * .125 + .375 * 2;
+            if ((envelope_index % 4) == 0)
+                note_timbre = 0.5;
+            if ((envelope_index % 8) == 0)
+                note_timbre = 0;
+            break;
+        case delayed_vibrato:
+            polyphony_rate = 0;
+            note_timbre = TIMBRE_50;
+            #define VOICE_VIBRATO_DELAY 150
+            #define VOICE_VIBRATO_SPEED 50
+            switch (compensated_index) {
+                case 0 ... VOICE_VIBRATO_DELAY:
+                    break;
+                default:
+                    frequency = frequency * vibrato_lut[(int)fmod((((float)compensated_index - (VOICE_VIBRATO_DELAY + 1))/1000*VOICE_VIBRATO_SPEED), VIBRATO_LUT_LENGTH)];
+                    break;
+            }
+            break;
+        // case delayed_vibrato_octave:
+        //     polyphony_rate = 0;
+        //     if ((envelope_index % 2) == 1) {
+        //         note_timbre = 0.55;
+        //     } else {
+        //         note_timbre = 0.45;
+        //     }
+        //     #define VOICE_VIBRATO_DELAY 150
+        //     #define VOICE_VIBRATO_SPEED 50
+        //     switch (compensated_index) {
+        //         case 0 ... VOICE_VIBRATO_DELAY:
+        //             break;
+        //         default:
+        //             frequency = frequency * VIBRATO_LUT[(int)fmod((((float)compensated_index - (VOICE_VIBRATO_DELAY + 1))/1000*VOICE_VIBRATO_SPEED), VIBRATO_LUT_LENGTH)];
+        //             break;
+        //     }
+        //     break;
+        // case duty_fifth_down:
+        //     note_timbre = 0.5;
+        //     if ((envelope_index % 3) == 0)
+        //         note_timbre = 0.75;
+        //     break;
+        // case duty_fourth_down:
+        //     note_timbre = 0.0;
+        //     if ((envelope_index % 12) == 0)
+        //         note_timbre = 0.75;
+        //     if (((envelope_index % 12) % 4) != 1)
+        //         note_timbre = 0.75;
+        //     break;
+        // case duty_third_down:
+        //     note_timbre = 0.5;
+        //     if ((envelope_index % 5) == 0)
+        //         note_timbre = 0.75;
+        //     break;
+        // case duty_fifth_third_down:
+        //     note_timbre = 0.5;
+        //     if ((envelope_index % 5) == 0)
+        //         note_timbre = 0.75;
+        //     if ((envelope_index % 3) == 0)
+        //         note_timbre = 0.25;
+        //     break;
+
+                default:
+                        break;
+    }
+
+    return frequency;
+}
+
+
diff --git a/quantum/audio/voices.h b/quantum/audio/voices.h
new file mode 100644
index 000000000..b2495b23b
--- /dev/null
+++ b/quantum/audio/voices.h
@@ -0,0 +1,31 @@
+#include <stdint.h>
+#include <stdbool.h>
+#include <avr/io.h>
+#include <util/delay.h>
+#include "luts.h"
+
+#ifndef VOICES_H
+#define VOICES_H
+
+float voice_envelope(float frequency);
+
+typedef enum {
+    default_voice,
+    butts_fader,
+    octave_crunch,
+    duty_osc,
+    duty_octave_down,
+    delayed_vibrato,
+    // delayed_vibrato_octave,
+    // duty_fifth_down,
+    // duty_fourth_down,
+    // duty_third_down,
+    // duty_fifth_third_down,
+    number_of_voices // important that this is last
+} voice_type;
+
+void set_voice(voice_type v);
+void voice_iterate(void);
+void voice_deiterate(void);
+
+#endif
\ No newline at end of file
diff --git a/quantum/wave.h b/quantum/audio/wave.h
index 6ebc34851..6ebc34851 100644
--- a/quantum/wave.h
+++ b/quantum/audio/wave.h
diff --git a/quantum/config_common.h b/quantum/config_common.h
index da53fce89..8ed5f4a10 100644
--- a/quantum/config_common.h
+++ b/quantum/config_common.h
@@ -1,70 +1,83 @@
 #ifndef CONFIG_DEFINITIONS_H
 #define CONFIG_DEFINITIONS_H
 
-#define B0 0x20
-#define B1 0x21
-#define B2 0x22
-#define B3 0x23
-#define B4 0x24
-#define B5 0x25
-#define B6 0x26
-#define B7 0x27
-#define C0 0x30
-#define C1 0x31
-#define C2 0x32
-#define C3 0x33
-#define C4 0x34
-#define C5 0x35
-#define C6 0x36
-#define C7 0x37
-#define D0 0x40
-#define D1 0x41
-#define D2 0x42
-#define D3 0x43
-#define D4 0x44
-#define D5 0x45
-#define D6 0x46
-#define D7 0x47
-#define E0 0x50
-#define E1 0x51
-#define E2 0x52
-#define E3 0x53
-#define E4 0x54
-#define E5 0x55
-#define E6 0x56
-#define E7 0x57
-#define F0 0x60
-#define F1 0x61
-#define F2 0x62
-#define F3 0x63
-#define F4 0x64
-#define F5 0x65
-#define F6 0x66
-#define F7 0x67
+/* diode directions */
+#define COL2ROW 0
+#define ROW2COL 1
+/* I/O pins */
+#define B0 0x30
+#define B1 0x31
+#define B2 0x32
+#define B3 0x33
+#define B4 0x34
+#define B5 0x35
+#define B6 0x36
+#define B7 0x37
+#define C0 0x60
+#define C1 0x61
+#define C2 0x62
+#define C3 0x63
+#define C4 0x64
+#define C5 0x65
+#define C6 0x66
+#define C7 0x67
+#define D0 0x90
+#define D1 0x91
+#define D2 0x92
+#define D3 0x93
+#define D4 0x94
+#define D5 0x95
+#define D6 0x96
+#define D7 0x97
+#define E0 0xC0
+#define E1 0xC1
+#define E2 0xC2
+#define E3 0xC3
+#define E4 0xC4
+#define E5 0xC5
+#define E6 0xC6
+#define E7 0xC7
+#define F0 0xF0
+#define F1 0xF1
+#define F2 0xF2
+#define F3 0xF3
+#define F4 0xF4
+#define F5 0xF5
+#define F6 0xF6
+#define F7 0xF7
+#define A0 0x00
+#define A1 0x01
+#define A2 0x02
+#define A3 0x03
+#define A4 0x04
+#define A5 0x05
+#define A6 0x06
+#define A7 0x07
 
-#define COL2ROW 0x0
-#define ROW2COL 0x1
 
+/* USART configuration */
 #ifdef BLUETOOTH_ENABLE
-#ifdef __AVR_ATmega32U4__
-    #define SERIAL_UART_BAUD       9600
-    #define SERIAL_UART_DATA       UDR1
-    #define SERIAL_UART_UBRR       ((F_CPU/(16UL*SERIAL_UART_BAUD))-1)
-    #define SERIAL_UART_RXD_VECT   USART1_RX_vect
-    #define SERIAL_UART_TXD_READY  (UCSR1A&(1<<UDRE1))
-    #define SERIAL_UART_INIT()     do { \
-        UBRR1L = (uint8_t) SERIAL_UART_UBRR;       /* baud rate */ \
-        UBRR1H = (uint8_t) (SERIAL_UART_UBRR>>8);  /* baud rate */ \
-        UCSR1B = (1<<TXEN1);                /* TX: enable */ \
-        UCSR1C = (0<<UPM11) | (0<<UPM10) | /* parity: none(00), even(01), odd(11) */ \
-                 (0<<UCSZ12) | (1<<UCSZ11) | (1<<UCSZ10); /* data-8bit(011) */ \
-                sei(); \
-    } while(0)
-#else
-#   error "USART configuration is needed."
+#   ifdef __AVR_ATmega32U4__
+#      define SERIAL_UART_BAUD 9600
+#      define SERIAL_UART_DATA UDR1
+#      define SERIAL_UART_UBRR (F_CPU / (16UL * SERIAL_UART_BAUD) - 1)
+#      define SERIAL_UART_RXD_VECT USART1_RX_vect
+#      define SERIAL_UART_TXD_READY (UCSR1A & _BV(UDRE1))
+#      define SERIAL_UART_INIT() do { \
+            /* baud rate */ \
+            UBRR1L = SERIAL_UART_UBRR; \
+            /* baud rate */ \
+            UBRR1H = SERIAL_UART_UBRR >> 8; \
+            /* enable TX */ \
+            UCSR1B = _BV(TXEN1); \
+            /* 8-bit data */ \
+            UCSR1C = _BV(UCSZ11) | _BV(UCSZ10); \
+            sei(); \
+        } while(0)
+#   else
+#       error "USART configuration is needed."
 #endif
 
-
 // I'm fairly sure these aren't needed, but oh well - Jack
 
 /*
@@ -113,4 +126,3 @@
 #endif
 
 #endif
-
diff --git a/quantum/dynamic_macro.h b/quantum/dynamic_macro.h
new file mode 100644
index 000000000..e6dbc5b9c
--- /dev/null
+++ b/quantum/dynamic_macro.h
@@ -0,0 +1,231 @@
+/* Author: Wojciech Siewierski < wojciech dot siewierski at onet dot pl > */
+#ifndef DYNAMIC_MACROS_H
+#define DYNAMIC_MACROS_H
+
+#include "action_layer.h"
+
+#ifndef DYNAMIC_MACRO_SIZE
+/* May be overridden with a custom value. Be aware that the effective
+ * macro length is half of this value: each keypress is recorded twice
+ * because of the down-event and up-event. This is not a bug, it's the
+ * intended behavior.
+ *
+ * Usually it should be fine to set the macro size to at least 256 but
+ * there have been reports of it being too much in some users' cases,
+ * so 128 is considered a safe default.
+ */
+#define DYNAMIC_MACRO_SIZE 128
+#endif
+
+/* DYNAMIC_MACRO_RANGE must be set as the last element of user's
+ * "planck_keycodes" enum prior to including this header. This allows
+ * us to 'extend' it.
+ */
+enum dynamic_macro_keycodes {
+    DYN_REC_START1 = DYNAMIC_MACRO_RANGE,
+    DYN_REC_START2,
+    DYN_MACRO_PLAY1,
+    DYN_MACRO_PLAY2,
+};
+
+/* Blink the LEDs to notify the user about some event. */
+void dynamic_macro_led_blink(void)
+{
+    backlight_toggle();
+    _delay_ms(100);
+    backlight_toggle();
+}
+
+/**
+ * Start recording of the dynamic macro.
+ *
+ * @param[out] macro_pointer The new macro buffer iterator.
+ * @param[in]  macro_buffer  The macro buffer used to initialize macro_pointer.
+ */
+void dynamic_macro_record_start(
+    keyrecord_t **macro_pointer, keyrecord_t *macro_buffer)
+{
+    dynamic_macro_led_blink();
+
+    clear_keyboard();
+    layer_clear();
+    *macro_pointer = macro_buffer;
+}
+
+/**
+ * Play the dynamic macro.
+ *
+ * @param macro_buffer[in] The beginning of the macro buffer being played.
+ * @param macro_end[in]    The element after the last macro buffer element.
+ * @param direction[in]    Either +1 or -1, which way to iterate the buffer.
+ */
+void dynamic_macro_play(
+    keyrecord_t *macro_buffer, keyrecord_t *macro_end, int8_t direction)
+{
+    uint32_t saved_layer_state = layer_state;
+
+    clear_keyboard();
+    layer_clear();
+
+    while (macro_buffer != macro_end) {
+        process_record(macro_buffer);
+        macro_buffer += direction;
+    }
+
+    clear_keyboard();
+
+    layer_state = saved_layer_state;
+}
+
+/**
+ * Record a single key in a dynamic macro.
+ *
+ * @param macro_pointer[in,out] The current buffer position.
+ * @param macro_end2[in] The end of the other macro which shouldn't be overwritten.
+ * @param direction[in]  Either +1 or -1, which way to iterate the buffer.
+ * @param record[in]     The current keypress.
+ */
+void dynamic_macro_record_key(
+    keyrecord_t **macro_pointer,
+    keyrecord_t *macro_end2,
+    int8_t direction,
+    keyrecord_t *record)
+{
+    if (*macro_pointer + direction != macro_end2) {
+        **macro_pointer = *record;
+        *macro_pointer += direction;
+    } else {
+        /* Notify about the end of buffer. The blinks are paired
+         * because they should happen on both down and up events. */
+        backlight_toggle();
+    }
+}
+
+/**
+ * End recording of the dynamic macro. Essentially just update the
+ * pointer to the end of the macro.
+ */
+void dynamic_macro_record_end(keyrecord_t *macro_pointer, keyrecord_t **macro_end)
+{
+    dynamic_macro_led_blink();
+
+    *macro_end = macro_pointer;
+}
+
+/* Handle the key events related to the dynamic macros. Should be
+ * called from process_record_user() like this:
+ *
+ *   bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+ *       if (!process_record_dynamic_macro(keycode, record)) {
+ *           return false;
+ *       }
+ *       <...THE REST OF THE FUNCTION...>
+ *   }
+ */
+bool process_record_dynamic_macro(uint16_t keycode, keyrecord_t *record)
+{
+    /* Both macros use the same buffer but read/write on different
+     * ends of it.
+     *
+     * Macro1 is written left-to-right starting from the beginning of
+     * the buffer.
+     *
+     * Macro2 is written right-to-left starting from the end of the
+     * buffer.
+     *
+     * &macro_buffer   macro_end
+     *  v                   v
+     * +------------------------------------------------------------+
+     * |>>>>>> MACRO1 >>>>>>|    |<<<<<<<<<<<<< MACRO2 <<<<<<<<<<<<<|
+     * +------------------------------------------------------------+
+     *                           ^                                 ^
+     *                         r_macro_end                  r_macro_buffer
+     *
+     * During the recording when one macro encounters the end of the
+     * other macro, the recording is stopped. Apart from this, there
+     * are no arbitrary limits for the macros' length in relation to
+     * each other: for example one can either have two medium sized
+     * macros or one long macro and one short macro. Or even one empty
+     * and one using the whole buffer.
+     */
+    static keyrecord_t macro_buffer[DYNAMIC_MACRO_SIZE];
+
+    /* Pointer to the first buffer element after the first macro.
+     * Initially points to the very beginning of the buffer since the
+     * macro is empty. */
+    static keyrecord_t *macro_end = macro_buffer;
+
+    /* The other end of the macro buffer. Serves as the beginning of
+     * the second macro. */
+    static keyrecord_t *const r_macro_buffer = macro_buffer + DYNAMIC_MACRO_SIZE - 1;
+
+    /* Like macro_end but for the second macro. */
+    static keyrecord_t *r_macro_end = r_macro_buffer;
+
+    /* A persistent pointer to the current macro position (iterator)
+     * used during the recording. */
+    static keyrecord_t *macro_pointer = NULL;
+
+    /* 0   - no macro is being recorded right now
+     * 1,2 - either macro 1 or 2 is being recorded */
+    static uint8_t macro_id = 0;
+
+    if (macro_id == 0) {
+        /* No macro recording in progress. */
+        if (!record->event.pressed) {
+            switch (keycode) {
+            case DYN_REC_START1:
+                dynamic_macro_record_start(&macro_pointer, macro_buffer);
+                macro_id = 1;
+                return false;
+            case DYN_REC_START2:
+                dynamic_macro_record_start(&macro_pointer, r_macro_buffer);
+                macro_id = 2;
+                return false;
+            case DYN_MACRO_PLAY1:
+                dynamic_macro_play(macro_buffer, macro_end, +1);
+                return false;
+            case DYN_MACRO_PLAY2:
+                dynamic_macro_play(r_macro_buffer, r_macro_end, -1);
+                return false;
+            }
+        }
+    } else {
+        /* A macro is being recorded right now. */
+        switch (keycode) {
+        case MO(_DYN):
+            /* Use the layer key used to access the macro recording as
+             * a stop button. */
+            if (record->event.pressed) { /* Ignore the initial release
+                                          * just after the recoding
+                                          * starts. */
+                switch (macro_id) {
+                case 1:
+                    dynamic_macro_record_end(macro_pointer, &macro_end);
+                    break;
+                case 2:
+                    dynamic_macro_record_end(macro_pointer, &r_macro_end);
+                    break;
+                }
+                macro_id = 0;
+            }
+            return false;
+        default:
+            /* Store the key in the macro buffer and process it normally. */
+            switch (macro_id) {
+            case 1:
+                dynamic_macro_record_key(&macro_pointer, r_macro_end, +1, record);
+                break;
+            case 2:
+                dynamic_macro_record_key(&macro_pointer, macro_end, -1, record);
+                break;
+            }
+            return true;
+            break;
+        }
+    }
+
+    return true;
+}
+
+#endif
diff --git a/quantum/keycode_config.c b/quantum/keycode_config.c
new file mode 100644
index 000000000..6d90781a1
--- /dev/null
+++ b/quantum/keycode_config.c
@@ -0,0 +1,74 @@
+#include "keycode_config.h"
+
+extern keymap_config_t keymap_config;
+
+uint16_t keycode_config(uint16_t keycode) {
+
+    switch (keycode) {
+        case KC_CAPSLOCK:
+        case KC_LOCKING_CAPS:
+            if (keymap_config.swap_control_capslock || keymap_config.capslock_to_control) {
+                return KC_LCTL;
+            }
+            return keycode;
+        case KC_LCTL:
+            if (keymap_config.swap_control_capslock) {
+                return KC_CAPSLOCK;
+            }
+            return KC_LCTL;
+        case KC_LALT:
+            if (keymap_config.swap_lalt_lgui) {
+                if (keymap_config.no_gui) {
+                    return KC_NO;
+                }
+                return KC_LGUI;
+            }
+            return KC_LALT;
+        case KC_LGUI:
+            if (keymap_config.swap_lalt_lgui) {
+                return KC_LALT;
+            }
+            if (keymap_config.no_gui) {
+                return KC_NO;
+            }
+            return KC_LGUI;
+        case KC_RALT:
+            if (keymap_config.swap_ralt_rgui) {
+                if (keymap_config.no_gui) {
+                    return KC_NO;
+                }
+                return KC_RGUI;
+            }
+            return KC_RALT;
+        case KC_RGUI:
+            if (keymap_config.swap_ralt_rgui) {
+                return KC_RALT;
+            }
+            if (keymap_config.no_gui) {
+                return KC_NO;
+            }
+            return KC_RGUI;
+        case KC_GRAVE:
+            if (keymap_config.swap_grave_esc) {
+                return KC_ESC;
+            }
+            return KC_GRAVE;
+        case KC_ESC:
+            if (keymap_config.swap_grave_esc) {
+                return KC_GRAVE;
+            }
+            return KC_ESC;
+        case KC_BSLASH:
+            if (keymap_config.swap_backslash_backspace) {
+                return KC_BSPACE;
+            }
+            return KC_BSLASH;
+        case KC_BSPACE:
+            if (keymap_config.swap_backslash_backspace) {
+                return KC_BSLASH;
+            }
+            return KC_BSPACE;
+        default:
+            return keycode;
+    }
+}
\ No newline at end of file
diff --git a/quantum/keycode_config.h b/quantum/keycode_config.h
new file mode 100644
index 000000000..c15b0d32f
--- /dev/null
+++ b/quantum/keycode_config.h
@@ -0,0 +1,26 @@
+#include "eeconfig.h"
+#include "keycode.h"
+
+#ifndef KEYCODE_CONFIG_H
+#define KEYCODE_CONFIG_H
+
+uint16_t keycode_config(uint16_t keycode);
+
+/* NOTE: Not portable. Bit field order depends on implementation */
+typedef union {
+    uint16_t raw;
+    struct {
+        bool swap_control_capslock:1;
+        bool capslock_to_control:1;
+        bool swap_lalt_lgui:1;
+        bool swap_ralt_rgui:1;
+        bool no_gui:1;
+        bool swap_grave_esc:1;
+        bool swap_backslash_backspace:1;
+        bool nkro:1;
+    };
+} keymap_config_t;
+
+extern keymap_config_t keymap_config;
+
+#endif /* KEYCODE_CONFIG_H */
diff --git a/quantum/keymap.h b/quantum/keymap.h
new file mode 100644
index 000000000..a01bbfbd1
--- /dev/null
+++ b/quantum/keymap.h
@@ -0,0 +1,350 @@
+/*
+Copyright 2012,2013 Jun Wako <wakojun@gmail.com>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef KEYMAP_H
+#define KEYMAP_H
+
+#include <stdint.h>
+#include <stdbool.h>
+#include "action.h"
+#if defined(__AVR__)
+#include <avr/pgmspace.h>
+#endif
+#include "keycode.h"
+#include "action_macro.h"
+#include "report.h"
+#include "host.h"
+// #include "print.h"
+#include "debug.h"
+#include "keycode_config.h"
+
+// ChibiOS uses RESET in its FlagStatus enumeration
+// Therefore define it as QK_RESET here, to avoid name collision
+#if defined(PROTOCOL_CHIBIOS)
+#define RESET QK_RESET
+#endif
+
+/* translates key to keycode */
+uint16_t keymap_key_to_keycode(uint8_t layer, keypos_t key);
+
+extern const uint16_t keymaps[][MATRIX_ROWS][MATRIX_COLS];
+extern const uint16_t fn_actions[];
+
+enum quantum_keycodes {
+    // Ranges used in shortucuts - not to be used directly
+    QK_TMK                = 0x0000,
+    QK_TMK_MAX            = 0x00FF,
+    QK_MODS               = 0x0100,
+    QK_LCTL               = 0x0100,
+    QK_LSFT               = 0x0200,
+    QK_LALT               = 0x0400,
+    QK_LGUI               = 0x0800,
+    QK_RCTL               = 0x1100,
+    QK_RSFT               = 0x1200,
+    QK_RALT               = 0x1400,
+    QK_RGUI               = 0x1800,
+    QK_MODS_MAX           = 0x1FFF,
+    QK_FUNCTION           = 0x2000,
+    QK_FUNCTION_MAX       = 0x2FFF,
+    QK_MACRO              = 0x3000,
+    QK_MACRO_MAX          = 0x3FFF,
+    QK_LAYER_TAP          = 0x4000,
+    QK_LAYER_TAP_MAX      = 0x4FFF,
+    QK_TO                 = 0x5000,
+    QK_TO_MAX             = 0x50FF,
+    QK_MOMENTARY          = 0x5100,
+    QK_MOMENTARY_MAX      = 0x51FF,
+    QK_DEF_LAYER          = 0x5200,
+    QK_DEF_LAYER_MAX      = 0x52FF,
+    QK_TOGGLE_LAYER       = 0x5300,
+    QK_TOGGLE_LAYER_MAX   = 0x53FF,
+    QK_ONE_SHOT_LAYER     = 0x5400,
+    QK_ONE_SHOT_LAYER_MAX = 0x54FF,
+    QK_ONE_SHOT_MOD       = 0x5500,
+    QK_ONE_SHOT_MOD_MAX   = 0x55FF,
+#ifndef DISABLE_CHORDING
+    QK_CHORDING           = 0x5600,
+    QK_CHORDING_MAX       = 0x56FF,
+#endif
+    QK_MOD_TAP            = 0x6000,
+    QK_MOD_TAP_MAX        = 0x6FFF,
+    QK_TAP_DANCE          = 0x7100,
+    QK_TAP_DANCE_MAX      = 0x71FF,
+#ifdef UNICODEMAP_ENABLE
+    QK_UNICODE_MAP        = 0x7800,
+    QK_UNICODE_MAP_MAX    = 0x7FFF,
+#endif
+#ifdef UNICODE_ENABLE
+    QK_UNICODE            = 0x8000,
+    QK_UNICODE_MAX        = 0xFFFF,
+#endif
+
+    // Loose keycodes - to be used directly
+
+    RESET = 0x7000,
+    DEBUG,
+    MAGIC_SWAP_CONTROL_CAPSLOCK,
+    MAGIC_CAPSLOCK_TO_CONTROL,
+    MAGIC_SWAP_LALT_LGUI,
+    MAGIC_SWAP_RALT_RGUI,
+    MAGIC_NO_GUI,
+    MAGIC_SWAP_GRAVE_ESC,
+    MAGIC_SWAP_BACKSLASH_BACKSPACE,
+    MAGIC_HOST_NKRO,
+    MAGIC_SWAP_ALT_GUI,
+    MAGIC_UNSWAP_CONTROL_CAPSLOCK,
+    MAGIC_UNCAPSLOCK_TO_CONTROL,
+    MAGIC_UNSWAP_LALT_LGUI,
+    MAGIC_UNSWAP_RALT_RGUI,
+    MAGIC_UNNO_GUI,
+    MAGIC_UNSWAP_GRAVE_ESC,
+    MAGIC_UNSWAP_BACKSLASH_BACKSPACE,
+    MAGIC_UNHOST_NKRO,
+    MAGIC_UNSWAP_ALT_GUI,
+    MAGIC_TOGGLE_NKRO,
+
+    // Leader key
+#ifndef DISABLE_LEADER
+    KC_LEAD,
+#endif
+
+    // Audio on/off/toggle
+    AU_ON,
+    AU_OFF,
+    AU_TOG,
+
+    // Music mode on/off/toggle
+    MU_ON,
+    MU_OFF,
+    MU_TOG,
+
+    // Music voice iterate
+    MUV_IN,
+    MUV_DE,
+
+    // Midi mode on/off
+    MIDI_ON,
+    MIDI_OFF,
+
+    // Backlight functionality
+    BL_0,
+    BL_1,
+    BL_2,
+    BL_3,
+    BL_4,
+    BL_5,
+    BL_6,
+    BL_7,
+    BL_8,
+    BL_9,
+    BL_10,
+    BL_11,
+    BL_12,
+    BL_13,
+    BL_14,
+    BL_15,
+    BL_DEC,
+    BL_INC,
+    BL_TOGG,
+    BL_STEP,
+
+    // RGB functionality
+    RGB_TOG,
+    RGB_MOD,
+    RGB_HUI,
+    RGB_HUD,
+    RGB_SAI,
+    RGB_SAD,
+    RGB_VAI,
+    RGB_VAD,
+
+    // Left shift, open paren
+    KC_LSPO,
+
+    // Right shift, close paren
+    KC_RSPC,
+
+    // always leave at the end
+    SAFE_RANGE
+};
+
+// Ability to use mods in layouts
+#define LCTL(kc) (kc | QK_LCTL)
+#define LSFT(kc) (kc | QK_LSFT)
+#define LALT(kc) (kc | QK_LALT)
+#define LGUI(kc) (kc | QK_LGUI)
+#define RCTL(kc) (kc | QK_RCTL)
+#define RSFT(kc) (kc | QK_RSFT)
+#define RALT(kc) (kc | QK_RALT)
+#define RGUI(kc) (kc | QK_RGUI)
+
+#define HYPR(kc) (kc | QK_LCTL | QK_LSFT | QK_LALT | QK_LGUI)
+#define MEH(kc)  (kc | QK_LCTL | QK_LSFT | QK_LALT)
+#define LCAG(kc) (kc | QK_LCTL | QK_LALT | QK_LGUI)
+#define ALTG(kc) (kc | QK_RCTL | QK_RALT)
+
+#define MOD_HYPR 0xf
+#define MOD_MEH 0x7
+
+
+// Aliases for shifted symbols
+// Each key has a 4-letter code, and some have longer aliases too.
+// While the long aliases are descriptive, the 4-letter codes
+// make for nicer grid layouts (everything lines up), and are
+// the preferred style for Quantum.
+#define KC_TILD LSFT(KC_GRV)    // ~
+#define KC_TILDE    KC_TILD
+
+#define KC_EXLM LSFT(KC_1)      // !
+#define KC_EXCLAIM  KC_EXLM
+
+#define KC_AT   LSFT(KC_2)      // @
+
+#define KC_HASH LSFT(KC_3)      // #
+
+#define KC_DLR  LSFT(KC_4)      // $
+#define KC_DOLLAR   KC_DLR
+
+#define KC_PERC LSFT(KC_5)      // %
+#define KC_PERCENT  KC_PERC
+
+#define KC_CIRC LSFT(KC_6)      // ^
+#define KC_CIRCUMFLEX   KC_CIRC
+
+#define KC_AMPR LSFT(KC_7)      // &
+#define KC_AMPERSAND    KC_AMPR
+
+#define KC_ASTR LSFT(KC_8)      // *
+#define KC_ASTERISK KC_ASTR
+
+#define KC_LPRN LSFT(KC_9)      // (
+#define KC_LEFT_PAREN   KC_LPRN
+
+#define KC_RPRN LSFT(KC_0)      // )
+#define KC_RIGHT_PAREN  KC_RPRN
+
+#define KC_UNDS LSFT(KC_MINS)   // _
+#define KC_UNDERSCORE   KC_UNDS
+
+#define KC_PLUS LSFT(KC_EQL)    // +
+
+#define KC_LCBR LSFT(KC_LBRC)   // {
+#define KC_LEFT_CURLY_BRACE KC_LCBR
+
+#define KC_RCBR LSFT(KC_RBRC)   // }
+#define KC_RIGHT_CURLY_BRACE    KC_RCBR
+
+#define KC_LABK LSFT(KC_COMM)   // <
+#define KC_LEFT_ANGLE_BRACKET   KC_LABK
+
+#define KC_RABK LSFT(KC_DOT)    // >
+#define KC_RIGHT_ANGLE_BRACKET  KC_RABK
+
+#define KC_COLN LSFT(KC_SCLN)   // :
+#define KC_COLON    KC_COLN
+
+#define KC_PIPE LSFT(KC_BSLS)   // |
+
+#define KC_LT LSFT(KC_COMM)     // <
+
+#define KC_GT LSFT(KC_DOT)      // >
+
+#define KC_QUES LSFT(KC_SLSH)   // ?
+#define KC_QUESTION KC_QUES
+
+#define KC_DQT LSFT(KC_QUOT)   // "
+#define KC_DOUBLE_QUOTE KC_DQT
+#define KC_DQUO KC_DQT
+
+#define KC_DELT KC_DELETE // Del key (four letter code)
+
+// Alias for function layers than expand past FN31
+#define FUNC(kc) (kc | QK_FUNCTION)
+
+// Aliases
+#define S(kc) LSFT(kc)
+#define F(kc) FUNC(kc)
+
+#define M(kc) (kc | QK_MACRO)
+
+#define MACRODOWN(...) (record->event.pressed ? MACRO(__VA_ARGS__) : MACRO_NONE)
+
+// L-ayer, T-ap - 256 keycode max, 16 layer max
+#define LT(layer, kc) (kc | QK_LAYER_TAP | ((layer & 0xF) << 8))
+
+#define AG_SWAP MAGIC_SWAP_ALT_GUI
+#define AG_NORM MAGIC_UNSWAP_ALT_GUI
+
+#define BL_ON  BL_9
+#define BL_OFF BL_0
+
+#define MI_ON MIDI_ON
+#define MI_OFF MIDI_OFF
+
+// GOTO layer - 16 layers max
+// when:
+// ON_PRESS    = 1
+// ON_RELEASE  = 2
+// Unless you have a good reason not to do so, prefer  ON_PRESS (1) as your default.
+// In fact, we changed it to assume ON_PRESS for sanity/simplicity. If needed, you can add your own
+// keycode modeled after the old version, kept below for this.
+/* #define TO(layer, when) (layer | QK_TO | (when << 0x4)) */
+#define TO(layer) (layer | QK_TO | (ON_PRESS << 0x4))
+
+// Momentary switch layer - 256 layer max
+#define MO(layer) (layer | QK_MOMENTARY)
+
+// Set default layer - 256 layer max
+#define DF(layer) (layer | QK_DEF_LAYER)
+
+// Toggle to layer - 256 layer max
+#define TG(layer) (layer | QK_TOGGLE_LAYER)
+
+// One-shot layer - 256 layer max
+#define OSL(layer) (layer | QK_ONE_SHOT_LAYER)
+
+// One-shot mod
+#define OSM(mod) (mod | QK_ONE_SHOT_MOD)
+
+// M-od, T-ap - 256 keycode max
+#define MT(mod, kc) (kc | QK_MOD_TAP | ((mod & 0xF) << 8))
+#define CTL_T(kc) MT(MOD_LCTL, kc)
+#define SFT_T(kc) MT(MOD_LSFT, kc)
+#define ALT_T(kc) MT(MOD_LALT, kc)
+#define GUI_T(kc) MT(MOD_LGUI, kc)
+#define C_S_T(kc) MT((MOD_LCTL | MOD_LSFT), kc) // Control + Shift e.g. for gnome-terminal
+#define MEH_T(kc) MT((MOD_LCTL | MOD_LSFT | MOD_LALT), kc) // Meh is a less hyper version of the Hyper key -- doesn't include Win or Cmd, so just alt+shift+ctrl
+#define LCAG_T(kc) MT((MOD_LCTL | MOD_LALT | MOD_LGUI), kc) // Left control alt and gui
+#define ALL_T(kc) MT((MOD_LCTL | MOD_LSFT | MOD_LALT | MOD_LGUI), kc) // see http://brettterpstra.com/2012/12/08/a-useful-caps-lock-key/
+
+// Dedicated keycode versions for Hyper and Meh, if you want to use them as standalone keys rather than mod-tap
+#define KC_HYPR HYPR(KC_NO)
+#define KC_MEH  MEH(KC_NO)
+
+#ifdef UNICODE_ENABLE
+    // For sending unicode codes.
+    // You may not send codes over 7FFF -- this supports most of UTF8.
+    // To have a key that sends out Œ, go UC(0x0152)
+    #define UNICODE(n) (n | QK_UNICODE)
+    #define UC(n) UNICODE(n)
+#endif
+
+#ifdef UNICODEMAP_ENABLE
+    #define X(n) (n | QK_UNICODE_MAP)
+#endif
+
+#endif
diff --git a/quantum/keymap_common.c b/quantum/keymap_common.c
index ae109da16..833e5a8f8 100644
--- a/quantum/keymap_common.c
+++ b/quantum/keymap_common.c
@@ -15,236 +15,46 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#include "keymap_common.h"
+#include "keymap.h"
 #include "report.h"
 #include "keycode.h"
 #include "action_layer.h"
+#if defined(__AVR__)
 #include <util/delay.h>
+#include <stdio.h>
+#endif
 #include "action.h"
 #include "action_macro.h"
 #include "debug.h"
 #include "backlight.h"
-#include "keymap_midi.h"
-
-#include <stdio.h>
-#include <inttypes.h>
-#ifdef AUDIO_ENABLE
-    #include "audio.h"
+#include "quantum.h"
 
-    float goodbye[][2] = {
-        {440.0*pow(2.0,(67)/12.0), 400},
-        {0, 50},
-        {440.0*pow(2.0,(60)/12.0), 400},
-        {0, 50},
-        {440.0*pow(2.0,(55)/12.0), 600},
-    };
+#ifdef MIDI_ENABLE
+        #include "process_midi.h"
 #endif
 
-static action_t keycode_to_action(uint16_t keycode);
+extern keymap_config_t keymap_config;
+
+#include <inttypes.h>
 
 /* converts key to action */
 action_t action_for_key(uint8_t layer, keypos_t key)
 {
-        // 16bit keycodes - important
+    // 16bit keycodes - important
     uint16_t keycode = keymap_key_to_keycode(layer, key);
 
-    if (keycode >= 0x0100 && keycode < 0x2000) {
-        // Has a modifier
-        action_t action;
-        // Split it up
-        action.code = ACTION_MODS_KEY(keycode >> 8, keycode & 0xFF); // adds modifier to key
-        return action;
-        } else if (keycode >= 0x2000 && keycode < 0x3000) {
-        // Is a shortcut for function layer, pull last 12bits
-        // This means we have 4,096 FN macros at our disposal
-        return keymap_func_to_action(keycode & 0xFFF);
-        } else if (keycode >= 0x3000 && keycode < 0x4000) {
-      // When the code starts with 3, it's an action macro.
-        action_t action;
-        action.code = ACTION_MACRO(keycode & 0xFF);
-        return action;
-#ifdef BACKLIGHT_ENABLE
-        } else if (keycode >= BL_0 && keycode <= BL_15) {
-        action_t action;
-        action.code = ACTION_BACKLIGHT_LEVEL(keycode & 0x000F);
-        return action;
-    } else if (keycode == BL_DEC) {
-        action_t action;
-        action.code = ACTION_BACKLIGHT_DECREASE();
-        return action;
-    } else if (keycode == BL_INC) {
-        action_t action;
-        action.code = ACTION_BACKLIGHT_INCREASE();
-        return action;
-    } else if (keycode == BL_TOGG) {
-        action_t action;
-        action.code = ACTION_BACKLIGHT_TOGGLE();
-        return action;
-    } else if (keycode == BL_STEP) {
-        action_t action;
-        action.code = ACTION_BACKLIGHT_STEP();
-        return action;
-#endif
-    } else if (keycode == RESET) { // RESET is 0x5000, which is why this is here
-        clear_keyboard();
-        #ifdef AUDIO_ENABLE
-            play_notes(&goodbye, 5, false);
-        #endif
-        _delay_ms(250);
-        bootloader_jump();
-        return;
-    } else if (keycode == DEBUG) { // DEBUG is 0x5001
-      // TODO: Does this actually work?
-        print("\nDEBUG: enabled.\n");
-        debug_enable = true;
-        return;
-    } else if (keycode >= 0x5000 && keycode < 0x6000) {
-        // Layer movement shortcuts
-        // See .h to see constraints/usage
-        int type = (keycode >> 0x8) & 0xF;
-        if (type == 0x1) {
-            // Layer set "GOTO"
-            int when = (keycode >> 0x4) & 0x3;
-            int layer = keycode & 0xF;
-            action_t action;
-            action.code = ACTION_LAYER_SET(layer, when);
-            return action;
-        } else if (type == 0x2) {
-            // Momentary layer
-            int layer = keycode & 0xFF;
-            action_t action;
-            action.code = ACTION_LAYER_MOMENTARY(layer);
-            return action;
-        } else if (type == 0x3) {
-            // Set default layer
-            int layer = keycode & 0xFF;
-            action_t action;
-            action.code = ACTION_DEFAULT_LAYER_SET(layer);
-            return action;
-        } else if (type == 0x4) {
-            // Set default layer
-            int layer = keycode & 0xFF;
-            action_t action;
-            action.code = ACTION_LAYER_TOGGLE(layer);
-            return action;
-        }
-#ifdef MIDI_ENABLE
-    } else if (keycode >= 0x6000 && keycode < 0x7000) {
-        action_t action;
-        action.code =  ACTION_FUNCTION_OPT(keycode & 0xFF, (keycode & 0x0F00) >> 8);
-        return action;
-#endif
-    } else if (keycode >= 0x7000 && keycode < 0x8000) {
-        action_t action;
-        action.code = ACTION_MODS_TAP_KEY((keycode >> 0x8) & 0xF, keycode & 0xFF);
-        return action;
-    } else if (keycode >= 0x8000 && keycode < 0x9000) {
-        action_t action;
-        action.code = ACTION_LAYER_TAP_KEY((keycode >> 0x8) & 0xF, keycode & 0xFF);
-        return action;
-#ifdef UNICODE_ENABLE
-    } else if (keycode >= 0x8000000) {
-        action_t action;
-        uint16_t unicode = keycode & ~(0x8000);
-        action.code =  ACTION_FUNCTION_OPT(unicode & 0xFF, (unicode & 0xFF00) >> 8);
-        return action;
-#endif
-    } else {
+    // keycode remapping
+    keycode = keycode_config(keycode);
 
-    }
+    action_t action;
+    uint8_t action_layer, when, mod;
+    // The arm-none-eabi compiler generates out of bounds warnings when using the fn_actions directly for some reason
+    const uint16_t* actions = fn_actions;
 
     switch (keycode) {
         case KC_FN0 ... KC_FN31:
-            return keymap_fn_to_action(keycode);
-#ifdef BOOTMAGIC_ENABLE
-        case KC_CAPSLOCK:
-        case KC_LOCKING_CAPS:
-            if (keymap_config.swap_control_capslock || keymap_config.capslock_to_control) {
-                return keycode_to_action(KC_LCTL);
-            }
-            return keycode_to_action(keycode);
-        case KC_LCTL:
-            if (keymap_config.swap_control_capslock) {
-                return keycode_to_action(KC_CAPSLOCK);
-            }
-            return keycode_to_action(KC_LCTL);
-        case KC_LALT:
-            if (keymap_config.swap_lalt_lgui) {
-                if (keymap_config.no_gui) {
-                    return keycode_to_action(ACTION_NO);
-                }
-                return keycode_to_action(KC_LGUI);
-            }
-            return keycode_to_action(KC_LALT);
-        case KC_LGUI:
-            if (keymap_config.swap_lalt_lgui) {
-                return keycode_to_action(KC_LALT);
-            }
-            if (keymap_config.no_gui) {
-                return keycode_to_action(ACTION_NO);
-            }
-            return keycode_to_action(KC_LGUI);
-        case KC_RALT:
-            if (keymap_config.swap_ralt_rgui) {
-                if (keymap_config.no_gui) {
-                    return keycode_to_action(ACTION_NO);
-                }
-                return keycode_to_action(KC_RGUI);
-            }
-            return keycode_to_action(KC_RALT);
-        case KC_RGUI:
-            if (keymap_config.swap_ralt_rgui) {
-                return keycode_to_action(KC_RALT);
-            }
-            if (keymap_config.no_gui) {
-                return keycode_to_action(ACTION_NO);
-            }
-            return keycode_to_action(KC_RGUI);
-        case KC_GRAVE:
-            if (keymap_config.swap_grave_esc) {
-                return keycode_to_action(KC_ESC);
-            }
-            return keycode_to_action(KC_GRAVE);
-        case KC_ESC:
-            if (keymap_config.swap_grave_esc) {
-                return keycode_to_action(KC_GRAVE);
-            }
-            return keycode_to_action(KC_ESC);
-        case KC_BSLASH:
-            if (keymap_config.swap_backslash_backspace) {
-                return keycode_to_action(KC_BSPACE);
-            }
-            return keycode_to_action(KC_BSLASH);
-        case KC_BSPACE:
-            if (keymap_config.swap_backslash_backspace) {
-                return keycode_to_action(KC_BSLASH);
-            }
-            return keycode_to_action(KC_BSPACE);
-#endif
-        default:
-            return keycode_to_action(keycode);
-    }
-}
-
-
-/* Macro */
-__attribute__ ((weak))
-const macro_t *action_get_macro(keyrecord_t *record, uint8_t id, uint8_t opt)
-{
-    return MACRO_NONE;
-}
-
-/* Function */
-__attribute__ ((weak))
-void action_function(keyrecord_t *record, uint8_t id, uint8_t opt)
-{
-}
-
-/* translates keycode to action */
-static action_t keycode_to_action(uint16_t keycode)
-{
-    action_t action;
-    switch (keycode) {
+            action.code = pgm_read_word(&actions[FN_INDEX(keycode)]);
+            break;
         case KC_A ... KC_EXSEL:
         case KC_LCTRL ... KC_RGUI:
             action.code = ACTION_KEY(keycode);
@@ -252,7 +62,7 @@ static action_t keycode_to_action(uint16_t keycode)
         case KC_SYSTEM_POWER ... KC_SYSTEM_WAKE:
             action.code = ACTION_USAGE_SYSTEM(KEYCODE2SYSTEM(keycode));
             break;
-        case KC_AUDIO_MUTE ... KC_WWW_FAVORITES:
+        case KC_AUDIO_MUTE ... KC_MEDIA_REWIND:
             action.code = ACTION_USAGE_CONSUMER(KEYCODE2CONSUMER(keycode));
             break;
         case KC_MS_UP ... KC_MS_ACCEL2:
@@ -261,6 +71,73 @@ static action_t keycode_to_action(uint16_t keycode)
         case KC_TRNS:
             action.code = ACTION_TRANSPARENT;
             break;
+        case QK_MODS ... QK_MODS_MAX: ;
+            // Has a modifier
+            // Split it up
+            action.code = ACTION_MODS_KEY(keycode >> 8, keycode & 0xFF); // adds modifier to key
+            break;
+        case QK_FUNCTION ... QK_FUNCTION_MAX: ;
+            // Is a shortcut for function action_layer, pull last 12bits
+            // This means we have 4,096 FN macros at our disposal
+            action.code = pgm_read_word(&actions[(int)keycode & 0xFFF]);
+            break;
+        case QK_MACRO ... QK_MACRO_MAX:
+            action.code = ACTION_MACRO(keycode & 0xFF);
+            break;
+        case QK_LAYER_TAP ... QK_LAYER_TAP_MAX:
+            action.code = ACTION_LAYER_TAP_KEY((keycode >> 0x8) & 0xF, keycode & 0xFF);
+            break;
+        case QK_TO ... QK_TO_MAX: ;
+            // Layer set "GOTO"
+            when = (keycode >> 0x4) & 0x3;
+            action_layer = keycode & 0xF;
+            action.code = ACTION_LAYER_SET(action_layer, when);
+            break;
+        case QK_MOMENTARY ... QK_MOMENTARY_MAX: ;
+            // Momentary action_layer
+            action_layer = keycode & 0xFF;
+            action.code = ACTION_LAYER_MOMENTARY(action_layer);
+            break;
+        case QK_DEF_LAYER ... QK_DEF_LAYER_MAX: ;
+            // Set default action_layer
+            action_layer = keycode & 0xFF;
+            action.code = ACTION_DEFAULT_LAYER_SET(action_layer);
+            break;
+        case QK_TOGGLE_LAYER ... QK_TOGGLE_LAYER_MAX: ;
+            // Set toggle
+            action_layer = keycode & 0xFF;
+            action.code = ACTION_LAYER_TOGGLE(action_layer);
+            break;
+        case QK_ONE_SHOT_LAYER ... QK_ONE_SHOT_LAYER_MAX: ;
+            // OSL(action_layer) - One-shot action_layer
+            action_layer = keycode & 0xFF;
+            action.code = ACTION_LAYER_ONESHOT(action_layer);
+            break;
+        case QK_ONE_SHOT_MOD ... QK_ONE_SHOT_MOD_MAX: ;
+            // OSM(mod) - One-shot mod
+            mod = keycode & 0xFF;
+            action.code = ACTION_MODS_ONESHOT(mod);
+            break;
+        case QK_MOD_TAP ... QK_MOD_TAP_MAX:
+            action.code = ACTION_MODS_TAP_KEY((keycode >> 0x8) & 0xF, keycode & 0xFF);
+            break;
+    #ifdef BACKLIGHT_ENABLE
+        case BL_0 ... BL_15:
+            action.code = ACTION_BACKLIGHT_LEVEL(keycode - BL_0);
+            break;
+        case BL_DEC:
+            action.code = ACTION_BACKLIGHT_DECREASE();
+            break;
+        case BL_INC:
+            action.code = ACTION_BACKLIGHT_INCREASE();
+            break;
+        case BL_TOGG:
+            action.code = ACTION_BACKLIGHT_TOGGLE();
+            break;
+        case BL_STEP:
+            action.code = ACTION_BACKLIGHT_STEP();
+            break;
+    #endif
         default:
             action.code = ACTION_NO;
             break;
@@ -268,22 +145,27 @@ static action_t keycode_to_action(uint16_t keycode)
     return action;
 }
 
+__attribute__ ((weak))
+const uint16_t PROGMEM fn_actions[] = {
 
-/* translates key to keycode */
-uint16_t keymap_key_to_keycode(uint8_t layer, keypos_t key)
+};
+
+/* Macro */
+__attribute__ ((weak))
+const macro_t *action_get_macro(keyrecord_t *record, uint8_t id, uint8_t opt)
 {
-        // Read entire word (16bits)
-    return pgm_read_word(&keymaps[(layer)][(key.row)][(key.col)]);
+    return MACRO_NONE;
 }
 
-/* translates Fn keycode to action */
-action_t keymap_fn_to_action(uint16_t keycode)
+/* Function */
+__attribute__ ((weak))
+void action_function(keyrecord_t *record, uint8_t id, uint8_t opt)
 {
-    return (action_t){ .code = pgm_read_word(&fn_actions[FN_INDEX(keycode)]) };
 }
 
-action_t keymap_func_to_action(uint16_t keycode)
+/* translates key to keycode */
+uint16_t keymap_key_to_keycode(uint8_t layer, keypos_t key)
 {
-        // For FUNC without 8bit limit
-    return (action_t){ .code = pgm_read_word(&fn_actions[(int)keycode]) };
+    // Read entire word (16bits)
+    return pgm_read_word(&keymaps[(layer)][(key.row)][(key.col)]);
 }
diff --git a/quantum/keymap_common.h b/quantum/keymap_common.h
deleted file mode 100644
index 3db40772e..000000000
--- a/quantum/keymap_common.h
+++ /dev/null
@@ -1,214 +0,0 @@
-/*
-Copyright 2012,2013 Jun Wako <wakojun@gmail.com>
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation, either version 2 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-#ifndef KEYMAP_H
-#define KEYMAP_H
-
-#include <stdint.h>
-#include <stdbool.h>
-#include "action.h"
-#include <avr/pgmspace.h>
-#include "keycode.h"
-#include "keymap.h"
-#include "action_macro.h"
-#include "report.h"
-#include "host.h"
-// #include "print.h"
-#include "debug.h"
-
-#ifdef BOOTMAGIC_ENABLE
-/* NOTE: Not portable. Bit field order depends on implementation */
-typedef union {
-    uint16_t raw;
-    struct {
-        bool swap_control_capslock:1;
-        bool capslock_to_control:1;
-        bool swap_lalt_lgui:1;
-        bool swap_ralt_rgui:1;
-        bool no_gui:1;
-        bool swap_grave_esc:1;
-        bool swap_backslash_backspace:1;
-        bool nkro:1;
-    };
-} keymap_config_t;
-keymap_config_t keymap_config;
-#endif
-
-
-/* translates key to keycode */
-uint16_t keymap_key_to_keycode(uint8_t layer, keypos_t key);
-
-/* translates Fn keycode to action */
-action_t keymap_fn_to_action(uint16_t keycode);
-
-/* translates Fn keycode to action */
-action_t keymap_func_to_action(uint16_t keycode);
-
-extern const uint16_t keymaps[][MATRIX_ROWS][MATRIX_COLS];
-extern const uint16_t fn_actions[];
-
-// Ability to use mods in layouts
-#define LCTL(kc) kc | 0x0100
-#define LSFT(kc) kc | 0x0200
-#define LALT(kc) kc | 0x0400
-#define LGUI(kc) kc | 0x0800
-#define HYPR(kc) kc | 0x0F00
-#define MEH(kc) kc  | 0x0700
-#define LCAG(kc) kc  | 0x0D00 // Modifier Ctrl Alt and GUI
-
-#define RCTL(kc) kc | 0x1100
-#define RSFT(kc) kc | 0x1200
-#define RALT(kc) kc | 0x1400
-#define RGUI(kc) kc | 0x1800
-
-// Aliases for shifted symbols
-// Each key has a 4-letter code, and some have longer aliases too.
-// While the long aliases are descriptive, the 4-letter codes
-// make for nicer grid layouts (everything lines up), and are
-// the preferred style for Quantum.
-#define KC_TILD LSFT(KC_GRV)    // ~
-#define KC_TILDE    KC_TILD
-
-#define KC_EXLM LSFT(KC_1)      // !
-#define KC_EXCLAIM  KC_EXLM
-
-#define KC_AT   LSFT(KC_2)      // @
-#define KC_HASH LSFT(KC_3)      // #
-
-#define KC_DLR  LSFT(KC_4)      // $
-#define KC_DOLLAR   KC_DLR
-
-#define KC_PERC LSFT(KC_5)      // %
-#define KC_PERCENT  KC_PERC
-
-#define KC_CIRC LSFT(KC_6)      // ^
-#define KC_CIRCUMFLEX   KC_CIRC
-
-#define KC_AMPR LSFT(KC_7)      // &
-#define KC_AMPERSAND    KC_AMPR
-
-#define KC_ASTR LSFT(KC_8)      // *
-#define KC_ASTERISK KC_ASTR
-
-#define KC_LPRN LSFT(KC_9)      // (
-#define KC_LEFT_PAREN   KC_LPRN
-
-#define KC_RPRN LSFT(KC_0)      // )
-#define KC_RIGHT_PAREN  KC_RPRN
-
-#define KC_UNDS LSFT(KC_MINS)   // _
-#define KC_UNDERSCORE   KC_UNDS
-
-#define KC_PLUS LSFT(KC_EQL)    // +
-
-#define KC_LCBR LSFT(KC_LBRC)   // {
-#define KC_LEFT_CURLY_BRACE KC_LCBR
-
-#define KC_RCBR LSFT(KC_RBRC)   // }
-#define KC_RIGHT_CURLY_BRACE    KC_RCBR
-
-#define KC_COLN LSFT(KC_SCLN)   // :
-#define KC_COLON    KC_COLN
-
-#define KC_PIPE LSFT(KC_BSLS)   // |
-
-#define KC_DELT KC_DELETE // Del key (four letter code)
-
-// Alias for function layers than expand past FN31
-#define FUNC(kc) kc | 0x2000
-
-// Aliases
-#define S(kc) LSFT(kc)
-#define F(kc) FUNC(kc)
-
-#define M(kc) kc | 0x3000
-
-#define MACRODOWN(...) (record->event.pressed ? MACRO(__VA_ARGS__) : MACRO_NONE)
-
-// These affect the backlight (if your keyboard has one).
-// We don't need to comment them out if your keyboard doesn't have a backlight,
-// since they don't take up any space.
-#define BL_ON 0x4009
-#define BL_OFF 0x4000
-#define BL_0 0x4000
-#define BL_1 0x4001
-#define BL_2 0x4002
-#define BL_3 0x4003
-#define BL_4 0x4004
-#define BL_5 0x4005
-#define BL_6 0x4006
-#define BL_7 0x4007
-#define BL_8 0x4008
-#define BL_9 0x4009
-#define BL_10 0x400A
-#define BL_11 0x400B
-#define BL_12 0x400C
-#define BL_13 0x400D
-#define BL_14 0x400E
-#define BL_15 0x400F
-#define BL_DEC 0x4010
-#define BL_INC 0x4011
-#define BL_TOGG 0x4012
-#define BL_STEP 0x4013
-
-#define RESET 0x5000
-#define DEBUG 0x5001
-
-// GOTO layer - 16 layers max
-// when:
-// ON_PRESS    = 1
-// ON_RELEASE  = 2
-// Unless you have a good reason not to do so, prefer  ON_PRESS (1) as your default.
-#define TO(layer, when) (layer | 0x5100 | (when << 0x4))
-
-// Momentary switch layer - 256 layer max
-#define MO(layer) (layer | 0x5200)
-
-// Set default layer - 256 layer max
-#define DF(layer) (layer | 0x5300)
-
-// Toggle to layer - 256 layer max
-#define TG(layer) (layer | 0x5400)
-
-#define MIDI(n) (n | 0x6000)
-
-// M-od, T-ap - 256 keycode max
-#define MT(mod, kc) (kc | 0x7000 | ((mod & 0xF) << 8))
-#define CTL_T(kc) MT(0x1, kc)
-#define SFT_T(kc) MT(0x2, kc)
-#define ALT_T(kc) MT(0x4, kc)
-#define GUI_T(kc) MT(0x8, kc)
-#define C_S_T(kc) MT(0x3, kc) // Control + Shift e.g. for gnome-terminal
-#define MEH_T(kc) MT(0x7, kc) // Meh is a less hyper version of the Hyper key -- doesn't include Win or Cmd, so just alt+shift+ctrl
-#define LCAG_T(kc) MT(0xD, kc) // Left control alt and gui 
-#define ALL_T(kc) MT(0xF, kc) // see http://brettterpstra.com/2012/12/08/a-useful-caps-lock-key/
-
-// Dedicated keycode versions for Hyper and Meh, if you want to use them as standalone keys rather than mod-tap
-#define KC_HYPR HYPR(KC_NO)
-#define KC_MEH  MEH(KC_NO)
-
-// L-ayer, T-ap - 256 keycode max, 16 layer max
-#define LT(layer, kc) (kc | 0x8000 | ((layer & 0xF) << 8))
-
-// For sending unicode codes.
-// You may not send codes over 1FFF -- this supports most of UTF8.
-// To have a key that sends out Œ, go UC(0x0152)
-#define UNICODE(n) (n | 0x8000)
-#define UC(n) UNICODE(n)
-
-
-#endif
diff --git a/quantum/keymap_extras/keymap_bepo.h b/quantum/keymap_extras/keymap_bepo.h
new file mode 100644
index 000000000..e5ef39552
--- /dev/null
+++ b/quantum/keymap_extras/keymap_bepo.h
@@ -0,0 +1,311 @@
+/* Keymap macros for the French BÉPO layout - http://bepo.fr */
+#ifndef KEYMAP_BEPO_H
+#define KEYMAP_BEPO_H
+
+#include "keymap.h"
+
+// Alt gr
+#ifndef ALTGR
+#define ALTGR(kc)   RALT(kc)
+#endif
+#ifndef ALGR
+#define ALGR(kc)    ALTGR(kc)
+#endif
+#define BP_ALGR KC_RALT
+
+// Normal characters
+// First row (on usual keyboards)
+#define BP_DOLLAR           KC_GRAVE            // $
+#define BP_DLR              BP_DOLLAR
+#define BP_DOUBLE_QUOTE     KC_1                // "
+#define BP_DQOT             BP_DOUBLE_QUOTE
+#define BP_LEFT_GUILLEMET   KC_2                // «
+#define BP_LGIL             BP_LEFT_GUILLEMET
+#define BP_RIGHT_GUILLEMET  KC_3                // »
+#define BP_RGIL             BP_RIGHT_GUILLEMET
+#define BP_LEFT_PAREN       KC_4                // (
+#define BP_LPRN             BP_LEFT_PAREN
+#define BP_RIGHT_PAREN      KC_5                // )
+#define BP_RPRN             BP_RIGHT_PAREN
+#define BP_AT               KC_6                // @
+#define BP_PLUS             KC_7                // +
+#define BP_MINUS            KC_8                // -
+#define BP_MINS             BP_MINUS
+#define BP_SLASH            KC_9                // /
+#define BP_SLSH             BP_SLASH
+#define BP_ASTERISK         KC_0                // *
+#define BP_ASTR             BP_ASTERISK
+#define BP_EQUAL            KC_MINUS            // =
+#define BP_EQL              BP_EQUAL
+#define BP_PERCENT          KC_EQUAL            // %
+#define BP_PERC             BP_PERCENT
+
+// Second row
+#define BP_B                KC_Q
+#define BP_E_ACUTE          KC_W        // é
+#define BP_ECUT             BP_E_ACUTE
+#define BP_P                KC_E
+#define BP_O                KC_R
+#define BP_E_GRAVE          KC_T        // è
+#define BP_EGRV             BP_E_GRAVE
+#define BP_DEAD_CIRCUMFLEX  KC_Y        // dead ^
+#define BP_DCRC             BP_DEAD_CIRCUMFLEX
+#define BP_V                KC_U
+#define BP_D                KC_I
+#define BP_L                KC_O
+#define BP_J                KC_P
+#define BP_Z                KC_LBRACKET
+#define BP_W                KC_RBRACKET
+
+// Third row
+#define BP_A            KC_A
+#define BP_U            KC_S
+#define BP_I            KC_D
+#define BP_E            KC_F
+#define BP_COMMA        KC_G        // ,
+#define BP_COMM         BP_COMMA
+#define BP_C            KC_H
+#define BP_T            KC_J
+#define BP_S            KC_K
+#define BP_R            KC_L
+#define BP_N            KC_SCOLON
+#define BP_M            KC_QUOTE
+#define BP_C_CEDILLA    KC_BSLASH   // ç
+#define BP_CCED         BP_C_CEDILLA
+
+// Fourth row
+#define BP_E_CIRCUMFLEX     KC_NONUS_BSLASH // ê
+#define BP_ECRC             BP_E_CIRCUMFLEX
+#define BP_A_GRAVE          KC_Z            // à
+#define BP_AGRV             BP_A_GRAVE
+#define BP_Y                KC_X
+#define BP_X                KC_C
+#define BP_DOT              KC_V            // .
+#define BP_K                KC_B
+#define BP_APOSTROPHE       KC_N
+#define BP_APOS             BP_APOSTROPHE   // '
+#define BP_Q                KC_M
+#define BP_G                KC_COMMA
+#define BP_H                KC_DOT
+#define BP_F                KC_SLASH
+
+// Shifted characters
+// First row
+#define BP_HASH     LSFT(BP_DOLLAR)     // #
+#define BP_1        LSFT(KC_1)
+#define BP_2        LSFT(KC_2)
+#define BP_3        LSFT(KC_3)
+#define BP_4        LSFT(KC_4)
+#define BP_5        LSFT(KC_5)
+#define BP_6        LSFT(KC_6)
+#define BP_7        LSFT(KC_7)
+#define BP_8        LSFT(KC_8)
+#define BP_9        LSFT(KC_9)
+#define BP_0        LSFT(KC_0)
+#define BP_DEGREE   LSFT(BP_EQUAL)      // °
+#define BP_DEGR     BP_DEGREE
+#define BP_GRAVE    LSFT(BP_PERCENT)    // `
+#define BP_GRV      BP_GRAVE
+
+// Second row
+#define BP_EXCLAIM  LSFT(BP_DEAD_CIRCUMFLEX)    // !
+#define BP_EXLM     BP_EXCLAIM
+
+// Third row
+#define BP_SCOLON   LSFT(BP_COMMA)  // ;
+#define BP_SCLN     BP_SCOLON
+
+// Fourth row
+#define BP_COLON    LSFT(BP_DOT)    // :
+#define BP_COLN     BP_COLON
+#define BP_QUESTION LSFT(BP_APOS)  // ?
+#define BP_QEST     BP_QUESTION
+
+// Space bar
+#define BP_NON_BREAKING_SPACE   LSFT(KC_SPACE)
+#define BP_NBSP                 BP_NON_BREAKING_SPACE
+
+// AltGr-ed characters
+// First row
+#define BP_EN_DASH          ALTGR(BP_DOLLAR)    // –
+#define BP_NDSH             BP_EN_DASH
+#define BP_EM_DASH          ALTGR(KC_1)         // —
+#define BP_MDSH             BP_EM_DASH
+#define BP_LESS             ALTGR(KC_2)         // <
+#define BP_GREATER          ALTGR(KC_3)         // >
+#define BP_GRTR             BP_GREATER
+#define BP_LBRACKET         ALTGR(KC_4)         // [
+#define BP_LBRC             BP_LBRACKET
+#define BP_RBRACKET         ALTGR(KC_5)         // ]
+#define BP_RBRC             BP_RBRACKET
+#define BP_CIRCUMFLEX       ALTGR(KC_6)         // ^
+#define BP_CIRC             BP_CIRCUMFLEX
+#define BP_PLUS_MINUS       ALTGR(KC_7)         // ±
+#define BP_PSMS             BP_PLUS_MINUS
+#define BP_MATH_MINUS       ALTGR(KC_8)         // −
+#define BP_MMNS             BP_MATH_MINUS
+#define BP_OBELUS           ALTGR(KC_9)         // ÷
+#define BP_OBEL             BP_OBELUS
+// more conventional name of the symbol
+#define BP_DIVISION_SIGN    BP_OBELUS
+#define BP_DVSN             BP_DIVISION_SIGN
+#define BP_TIMES            ALTGR(KC_0)         // ×
+#define BP_TIMS             BP_TIMES
+#define BP_DIFFERENT        ALTGR(BP_EQUAL)     // ≠
+#define BP_DIFF             BP_DIFFERENT
+#define BP_PERMILLE         ALTGR(BP_PERCENT)   // ‰
+#define BP_PMIL             BP_PERMILLE
+
+// Second row
+#define BP_PIPE                 ALTGR(BP_B)         // |
+#define BP_DEAD_ACUTE           ALTGR(BP_E_ACUTE)   // dead ´
+#define BP_DACT                 BP_DEAD_ACUTE
+#define BP_AMPERSAND            ALTGR(BP_P)         // &
+#define BP_AMPR                 BP_AMPERSAND
+#define BP_OE_LIGATURE          ALTGR(BP_O)         // œ
+#define BP_OE                   BP_OE_LIGATURE
+#define BP_DEAD_GRAVE           ALTGR(BP_E_GRAVE)   // `
+#define BP_DGRV                 BP_DEAD_GRAVE
+#define BP_INVERTED_EXCLAIM     ALTGR(BP_DEAD_CIRCUMFLEX)   // ¡
+#define BP_IXLM                 BP_INVERTED_EXCLAIM
+#define BP_DEAD_CARON           ALTGR(BP_V)         // dead ˇ
+#define BP_DCAR                 BP_DEAD_CARON
+#define BP_ETH                  ALTGR(BP_D)         // ð
+#define BP_DEAD_SLASH           ALTGR(BP_L)         // dead /
+#define BP_DSLH                 BP_DEAD_SLASH
+#define BP_IJ_LIGATURE          ALTGR(BP_J)         // ij
+#define BP_IJ                   BP_IJ_LIGATURE
+#define BP_SCHWA                ALTGR(BP_Z)         // ə
+#define BP_SCWA                 BP_SCHWA
+#define BP_DEAD_BREVE           ALTGR(BP_W)         // dead ˘
+#define BP_DBRV                 BP_DEAD_BREVE
+
+// Third row
+#define BP_AE_LIGATURE              ALTGR(BP_A)         // æ
+#define BP_AE                       BP_AE_LIGATURE
+#define BP_U_GRAVE                  ALTGR(BP_U)           // ù
+#define BP_UGRV                     BP_U_GRAVE
+#define BP_DEAD_TREMA               ALTGR(BP_I)         // dead ¨ (trema/umlaut/diaresis)
+#define BP_DTRM                     BP_DEAD_TREMA
+#define BP_EURO                     ALTGR(BP_E)         // €
+#define BP_TYPOGRAPHICAL_APOSTROPHE ALTGR(BP_COMMMA)    // ’
+#define BP_TAPO                     BP_TYPOGRAPHICAL_APOSTROPHE
+#define BP_COPYRIGHT                ALTGR(BP_C)         // ©
+#define BP_CPRT                     BP_COPYRIGHT
+#define BP_THORN                    ALTGR(BP_T)         // þ
+#define BP_THRN                     BP_THORN
+#define BP_SHARP_S                  ALTGR(BP_S)         // ß
+#define BP_SRPS                     BP_SHARP_S
+#define BP_REGISTERED_TRADEMARK     ALTGR(BP_R)         // ®
+#define BP_RTM                      BP_REGISTERED_TRADEMARK
+#define BP_DEAD_TILDE               ALTGR(BP_N)         // dead ~
+#define BP_DTLD                     BP_DEAD_TILDE
+#define BP_DEAD_MACRON              ALTGR(BP_M)         // dead ¯
+#define BP_DMCR                     BP_DEAD_MACRON
+#define BP_DEAD_CEDILLA             ALTGR(BP_C_CEDILLA) // dead ¸
+#define BP_DCED                     BP_DEAD_CEDILLA
+
+// Fourth row
+#define BP_NONUS_SLASH          ALTGR(BP_E_CIRCUMFLEX)  // / on non-us backslash key (102nd key, ê in bépo)
+#define BP_NUSL                 BP_NONUS_SLASH
+#define BP_BACKSLASH            ALTGR(BP_A_GRAVE)       /* \ */
+#define BP_BSLS                 BP_BACKSLASH
+#define BP_LEFT_CURLY_BRACE     ALTGR(BP_Y)             // {
+#define BP_LCBR                 BP_LEFT_CURLY_BRACE
+#define BP_RIGHT_CURLY_BRACE    ALTGR(BP_X)             // }
+#define BP_RCBR                 BP_RIGHT_CURLY_BRACE
+#define BP_ELLIPSIS             ALTGR(BP_DOT)           // …
+#define BP_ELPS                 BP_ELLIPSIS
+#define BP_TILDE                ALTGR(BP_K)             // ~
+#define BP_TILD                 BP_TILDE
+#define BP_INVERTED_QUESTION    ALTGR(BP_QUESTION)      // ¿
+#define BP_IQST                 BP_INVERTED_QUESTION
+#define BP_DEAD_RING            ALTGR(BP_Q)             // dead °
+#define BP_DRNG                 BP_DEAD_RING
+#define BP_DEAD_GREEK           ALTGR(BP_G)             // dead Greek key (following key will make a Greek letter)
+#define BP_DGRK                 BP_DEAD_GREEK
+#define BP_DAGGER               ALTGR(BP_H)             // †
+#define BP_DAGR                 BP_DAGGER
+#define BP_DEAD_OGONEK          ALTGR(BP_F)             // dead ˛
+#define BP_DOGO                 BP_DEAD_OGONEK
+
+// Space bar
+#define BP_UNDERSCORE   ALTGR(KC_SPACE)     // _
+#define BP_UNDS         BP_UNDERSCORE
+
+// AltGr-Shifted characters (different from capitalised AltGr-ed characters)
+// First row
+#define BP_PARAGRAPH            ALTGR(BP_HASH)      // ¶
+#define BP_PARG                 BP_PARAGRAPH
+#define BP_LOW_DOUBLE_QUOTE     ALTGR(BP_1)         // „
+#define BP_LWQT                 BP_LOW_DOUBLE_QUOTE
+#define BP_LEFT_DOUBLE_QUOTE    ALTGR(BP_2)         // “
+#define BP_LDQT                 BP_LEFT_DOUBLE_QUOTE
+#define BP_RIGHT_DOUBLE_QUOTE   ALTGR(BP_3)         // ”
+#define BP_RDQT                 BP_RIGHT_DOUBLE_QUOTE
+#define BP_LESS_OR_EQUAL        ALTGR(BP_4)         // ≤
+#define BP_LEQL                 BP_LESS_OR_EQUAL
+#define BP_GREATER_OR_EQUAL     ALTGR(BP_5)         // ≥
+#define BP_GEQL                 BP_GREATER_OR_EQUAL
+// nothing on ALTGR(BP_6)
+#define BP_NEGATION             ALTGR(BP_7)         // ¬
+#define BP_NEGT                 BP_NEGATION
+#define BP_ONE_QUARTER          ALTGR(BP_8)         // ¼
+#define BP_1QRT                 BP_ONE_QUARTER
+#define BP_ONE_HALF             ALTGR(BP_9)         // ½
+#define BP_1HLF                 BP_ONE_HALF
+#define BP_THREE_QUARTERS       ALTGR(BP_0)         // ¾
+#define BP_3QRT                 BP_THREE_QUARTERS
+#define BP_MINUTES              ALTGR(BP_DEGREE)    // ′
+#define BP_MNUT                 BP_MINUTES
+#define BP_SECONDS              ALTGR(BP_GRAVE)     // ″
+#define BP_SCND                 BP_SECONDS
+
+// Second row
+#define BP_BROKEN_PIPE          LSFT(BP_PIPE)           // ¦
+#define BP_BPIP                 BP_BROKEN_PIPE
+#define BP_DEAD_DOUBLE_ACUTE    LSFT(BP_DEAD_ACUTE)     // ˝
+#define BP_DDCT                 BP_DEAD_DOUBLE_ACUTE
+#define BP_SECTION              ALTGR(LSFT(BP_P))       // §
+#define BP_SECT                 BP_SECTION
+// LSFT(BP_DEAD_GRAVE) is actually the same character as LSFT(BP_PERCENT)
+#define BP_GRAVE_BIS            LSFT(BP_DEAD_GRAVE)     // `
+#define BP_GRVB                 BP_GRAVE_BIS
+
+// Third row
+#define BP_DEAD_DOT_ABOVE       LSFT(BP_DEAD_TREMA)     // dead ˙
+#define BP_DDTA                 BP_DEAD_DOT_ABOVE
+#define BP_DEAD_CURRENCY        LSFT(BP_EURO)           // dead ¤ (next key will generate a currency code like ¥ or £)
+#define BP_DCUR                 BP_DEAD_CURRENCY
+#define BP_DEAD_HORN            LSFT(ALTGR(BP_COMMA))   // dead ̛
+#define BP_DHRN                 BP_DEAD_HORN
+#define BP_LONG_S               LSFT(ALTGR(BP_C))       // ſ
+#define BP_LNGS                 BP_LONG_S
+#define BP_TRADEMARK            LSFT(BP_REGISTERED_TRADEMARK)   // ™
+#define BP_TM                   BP_TRADEMARK
+#define BP_ORDINAL_INDICATOR_O  LSFT(ALTGR(BP_M))               // º
+#define BP_ORDO                 BP_ORDINAL_INDICATOR_O
+#define BP_DEAD_COMMA           LSFT(BP_DEAD_CEDILLA)   // dead ˛
+#define BP_DCOM                 BP_DEAD_COMMA
+
+// Fourth row
+#define BP_LEFT_QUOTE           LSFT(ALTGR(BP_Y))       // ‘
+#define BP_LQOT                 BP_LEFT_QUOTE
+#define BP_RIGHT_QUOTE          LSFT(ALTGR(BP_X))       // ’
+#define BP_RQOT                 BP_RIGHT_QUOTE
+#define BP_INTERPUNCT           LSFT(ALTGR(BP_DOT))     // ·
+#define BP_IPCT                 BP_INTERPUNCT
+#define BP_DEAD_HOOK_ABOVE      LSFT(ALTGR(BP_QUESTION))    // dead ̉
+#define BP_DHKA                 BP_DEAD_HOOK_ABOVE
+#define BP_DEAD_UNDERDOT        LSFT(BP_DEAD_RING)      // dead ̣
+#define BP_DUDT                 BP_DEAD_UNDERDOT
+#define BP_DOUBLE_DAGGER        LSFT(BP_DAGGER)         // ‡
+#define BP_DDGR                 BP_DOUBLE_DAGGER
+#define BP_ORDINAL_INDICATOR_A  LSFT(ALTGR(BP_F))       // ª
+#define BP_ORDA                 BP_ORDINAL_INDICATOR_A
+
+// Space bar
+#define BP_NARROW_NON_BREAKING_SPACE    ALTGR(BP_NON_BREAKING_SPACE)
+#define BP_NNBS                         BP_NARROW_NON_BREAKING_SPACE
+
+#endif
diff --git a/quantum/keymap_extras/keymap_canadian_multilingual.h b/quantum/keymap_extras/keymap_canadian_multilingual.h
new file mode 100644
index 000000000..0bc20c7b9
--- /dev/null
+++ b/quantum/keymap_extras/keymap_canadian_multilingual.h
@@ -0,0 +1,255 @@
+#ifndef KEYMAP_CANADIAN_MULTILINGUAG_H
+#define KEYMAP_CANADIAN_MULTILINGUAG_H
+
+#include "keymap.h"
+
+// Alt gr
+#ifndef ALTGR
+#define ALTGR(kc)   RALT(kc)
+#endif
+#ifndef ALGR
+#define ALGR(kc)    ALTGR(kc)
+#endif
+
+#define CSA_ALTGR   KC_RALT
+#define CSA_ALGR    CSA_ALTGR
+
+#ifndef GR2A
+#define GR2A(kc)    RCTL(kc)
+#endif
+
+// Normal characters
+// First row
+#define CSA_SLASH   KC_GRV      // /
+#define CSA_SLSH    CSA_SLASH
+
+// Second row
+#define CSA_DEAD_CIRCUMFLEX     KC_LBRACKET         // dead ^
+#define CSA_DCRC                CSA_DEAD_CIRCUMFLEX
+#define CSA_C_CEDILLA           KC_RBRACKET         // Ç
+#define CSA_CCED                CSA_C_CEDILLA
+
+// Third row
+#define CSA_E_GRAVE     KC_QUOT     // è
+#define CSA_EGRV        CSA_E_GRAVE
+#define CSA_A_GRAVE     KC_BSLASH   // à
+#define CSA_AGRV        CSA_A_GRAVE
+
+// Fourth row
+#define CSA_U_GRAVE     KC_NONUS_BSLASH     // ù
+#define CSA_UGRV        CSA_U_GRAVE
+#define CSA_E_ACUTE     KC_SLSH             // é
+#define CSA_ECUT        CSA_E_ACUTE
+
+// Shifted characters
+// First row
+#define CSA_BACKSLASH   LSFT(CSA_SLASH) /* \ */
+#define CSA_BSLS        CSA_BACKSLASH
+#define CSA_QUESTION    LSFT(KC_6)      // ?
+#define CSA_QEST        CSA_QUESTION
+
+// Second row
+#define CSA_DEAD_TREMA  LSFT(CSA_DEAD_CIRCUMFLEX)    // dead trema/umlaut/diaresis for ä ë ï ö ü
+#define CSA_DTRM        CSA_DEAD_TREMA
+
+// Third row
+// all same as US-QWERTY, or capitalised character of the non-shifted key
+
+// Fourth row
+#define CSA_APOSTROPHE      LSFT(KC_COMMA)  // '
+#define CSA_APOS            CSA_APOSTROPHE
+#define CSA_DOUBLE_QUOTE    LSFT(KC_DOT)    // "
+#define CSA_DQOT            CSA_DOUBLE_QUOTE
+
+// Alt Gr-ed characters
+// First row
+#define CSA_PIPE                ALTGR(CSA_SLASH)        // |
+#define CSA_CURRENCY            ALTGR(KC_4)             // ¤
+#define CSA_CURR                CSA_CURRENCY
+#define CSA_LEFT_CURLY_BRACE    ALTGR(KC_7)             // {
+#define CSA_LCBR                CSA_LEFT_CURLY_BRACE
+#define CSA_RIGHT_CURLY_BRACE   ALTGR(KC_8)             // }
+#define CSA_RCBR                CSA_RIGHT_CURLY_BRACE
+#define CSA_LBRACKET            ALTGR(KC_9)             // [
+#define CSA_LBRC                CSA_LBRACKET
+#define CSA_RBRACKET            ALTGR(KC_0)             // ]
+#define CSA_RBRC                CSA_RBRACKET
+#define CSA_NEGATION            ALTGR(KC_EQUAL)         // ¬
+#define CSA_NEGT                CSA_NEGATION
+
+// Second row
+// euro symbol not available on Linux? (X.org)
+#define CSA_EURO        ALTGR(KC_E)                 // €
+#define CSA_DEAD_GRAVE  ALTGR(CSA_DEAD_CIRCUMFLEX)
+#define CSA_DGRV        CSA_DEAD_GRAVE              // dead `
+#define CSA_DEAD_TILDE  ALTGR(CSA_C_CEDILLA)        // ~
+#define CSA_DTLD        CSA_DEAD_TILDE
+
+// Third row
+#define CSA_DEGREE  ALTGR(KC_SCOLON)    // °
+#define CSA_DEGR    CSA_DEGREE
+
+// Fourth row
+#define CSA_LEFT_GUILLEMET      ALTGR(KC_Z)         // «
+#define CSA_LGIL                CSA_LEFT_GUILLEMET
+#define CSA_RIGHT_GUILLEMET     ALTGR(KC_X)         // »
+#define CSA_RGIL                CSA_RIGHT_GUILLEMET
+#define CSA_LESS                ALTGR(KC_COMMA)     // <
+#define CSA_GREATER             ALTGR(KC_DOT)       // >
+#define CSA_GRTR                CSA_GREATER
+
+// Space bar
+#define CSA_NON_BREAKING_SPACE  ALTGR(KC_SPACE)
+#define CSA_NBSP                CSA_NON_BREAKING_SPACE
+
+// GR2A-ed characters
+// First row
+#define CSA_SUPERSCRIPT_ONE     GR2A(KC_1)  // ¹
+#define CSA_SUP1                CSA_SUPERSCRIPT_ONE
+#define CSA_SUPERSCRIPT_TWO     GR2A(KC_2)  // ²
+#define CSA_SUP2                CSA_SUPERSCRIPT_TWO
+#define CSA_SUPERSCRIPT_THREE   GR2A(KC_3)  // ³
+#define CSA_SUP3                CSA_SUPERSCRIPT_THREE
+#define CSA_ONE_QUARTER         GR2A(KC_4)  // ¼
+#define CSA_1QRT                CSA_ONE_QUARTER
+#define CSA_ONE_HALF            GR2A(KC_5)  // ½
+#define CSA_1HLF                CSA_ONE_HALF
+#define CSA_THREE_QUARTERS      GR2A(KC_6)  // ¾
+#define CSA_3QRT                CSA_THREE_QUARTERS
+// nothing on 7-0 and -
+#define CSA_DEAD_CEDILLA        GR2A(KC_EQUAL)  // dead ¸
+#define CSA_DCED                CSA_DEAD_CEDILLA
+
+// Second row
+#define CSA_OMEGA           GR2A(KC_Q)  // ω
+#define CSA_OMEG            CSA_OMEGA
+#define CSA_L_STROKE        GR2A(KC_W)  // ł
+#define CSA_LSTK            CSA_L_STROKE
+#define CSA_OE_LIGATURE     GR2A(KC_E)  // œ
+#define CSA_OE              CSA_OE_LIGATURE
+#define CSA_PARAGRAPH       GR2A(KC_R)  // ¶
+#define CSA_PARG            CSA_PARAGRAPH
+#define CSA_T_STROKE        GR2A(KC_T)  // ŧ
+#define CSA_LEFT_ARROW      GR2A(KC_Y)  // ←
+#define CSA_LARW            CSA_LEFT_ARROW
+#define CSA_DOWN_ARROW      GR2A(KC_U)  // ↓
+#define CSA_DARW            CSA_DOWN_ARROW
+#define CSA_RIGHT_ARROW     GR2A(KC_I)  // →
+#define CSA_RARW            CSA_RIGHT_ARROW
+#define CSA_O_STROKE        GR2A(KC_O)  // ø
+#define CSA_OSTK            CSA_O_STROKE
+#define CSA_THORN           GR2A(KC_P)  // þ
+#define CSA_THRN            CSA_THORN
+// nothing on ^
+#define CSA_TILDE           GR2A(CSA_C_CEDILLA)  // dead ~
+#define CSA_TILD            CSA_TILDE
+
+// Third row
+#define CSA_AE_LIGATURE     GR2A(KC_A)      // æ
+#define CSA_AE              CSA_AE_LIGATURE
+#define CSA_SHARP_S         GR2A(KC_S)      // ß
+#define CSA_SRPS            CSA_SHARP_S
+#define CSA_ETH             GR2A(KC_D)      // ð
+// nothing on F
+#define CSA_ENG             GR2A(KC_G)      // ŋ
+#define CSA_H_SRTOKE        GR2A(KC_H)      // ħ
+#define CSA_HSTK            CSA_H_SRTOKE
+#define CSA_IJ_LIGATURE     GR2A(KC_J)      // ij
+#define CSA_IJ              CSA_IJ_LIGATURE
+#define CSA_KRA             GR2A(KC_K)      // ĸ
+#define CSA_L_FLOWN_DOT     GR2A(KC_L)      // ŀ
+#define CSA_LFLD            CSA_L_FLOWN_DOT
+#define CSA_DEAD_ACUTE      GR2A(KC_SCLN)   // dead acute accent
+#define CSA_DACT            CSA_DEAD_ACUTE
+// nothing on È & À
+
+// Fourth row
+#define CSA_CENT                GR2A(KC_C)  // ¢
+#define CSA_LEFT_DOUBLE_QUOTE   GR2A(KC_V)  // “
+#define CSA_LDQT                CSA_LEFT_DOUBLE_QUOTE
+#define CSA_RIGHT_DOUBLE_QUOTE  GR2A(KC_B)  // ”
+#define CSA_RDQT                CSA_RIGHT_DOUBLE_QUOTE
+#define CSA_N_APOSTROPHE        GR2A(KC_N)  // ʼn (deprecated unicode codepoint)
+#define CSA_NAPO                CSA_N_APOSTROPHE
+#define CSA_MU                  GR2A(KC_M)  // μ
+#define CSA_HORIZONTAL_BAR      GR2A(KC_COMMA)  // ―
+#define CSA_HZBR                CSA_HORIZONTAL_BAR
+#define CSA_DEAD_DOT_ABOVE      GR2A(KC_DOT)    // dead ˙
+#define CSA_DDTA                CSA_DEAD_DOT_ABOVE
+
+// GR2A-shifted characters (different from capitalised GR2A-ed characters)
+// First row
+#define CSA_SOFT_HYPHEN         GR2A(LSFT(CSA_SLASH))   // soft-hyphen, appears as a hyphen in wrapped word
+#define CSA_SHYP                CSA_SOFT_HYPHEN
+#define CSA_INVERTED_EXCLAIM    GR2A(KC_EXCLAIM)    // ¡
+#define CSA_IXLM                CSA_INVERTED_EXCLAIM
+// nothing on 2
+#define CSA_POUND               GR2A(LSFT(KC_3))    // £
+#define CSA_GBP                 CSA_POUND_SIGN
+// already on ALTGR(KC_E)
+#define CSA_EURO_BIS            GR2A(LSFT(KC_4))    // €
+#define CSA_EURB                CSA_EURO_BIS
+#define CSA_THREE_EIGHTHS       GR2A(LSFT(KC_5))    // ⅜
+#define CSA_3ON8                CSA_THREE_EIGHTHS
+#define CSA_FIVE_EIGHTHS        GR2A(LSFT(KC_6))    // ⅝
+#define CSA_5ON8                CSA_FIVE_EIGHTHS
+#define CSA_SEVEN_EIGHTHS       GR2A(LSFT(KC_7))    // ⅞
+#define CSA_7ON8                CSA_SEVEN_EIGHTHS
+#define CSA_TRADEMARK           GR2A(LSFT(KC_8))    // ™
+#define CSA_TM                  CSA_TRADEMARK
+#define CSA_PLUS_MINUS          GR2A(LSFT(KC_9))    // ±
+#define CSA_PSMS                CSA_PLUS_MINUS
+// nothing on 0
+#define CSA_INVERTED_QUESTION   GR2A(LSFT(KC_MINUS))    // ¿
+#define CSA_IQST                CSA_INVERTED_QUESTION
+#define CSA_DEAD_OGONEK         GR2A(LSFT(KC_EQUAL))    // dead ˛
+#define CSA_DOGO                CSA_DEAD_OGONEK
+
+// Second row
+#define CSA_REGISTERED_TRADEMARK    GR2A(LSFT(KC_R))        // ®
+#define CSA_RTM                     CSA_REGISTERED_TRADEMARK
+#define CSA_YEN                     GR2A(LSFT(KC_Y))        // ¥
+#define CSA_YUAN                    CSA_YEN
+#define CSA_UP_ARROW                LSFT(CSA_DOWN_ARROW)    // ↑
+#define CSA_DOTLESS_I               GR2A(LSFT(KC_I))        // ı
+#define CSA_DLSI                    CSA_DOTLESS_I
+#define CSA_DEAD_RING               GR2A(LSFT(CSA_DCRC))    // dead °
+#define CSA_DRNG                    CSA_DEAD_RING
+#define CSA_DEAD_MACRON             GR2A(LSFT(CSA_C_CEDILLA))   // dead ¯
+#define CSA_DMCR                    CSA_DEAD_MACRON
+
+// Third row
+#define CSA_SECTION                 GR2A(LSFT(KC_S))        // §
+#define CSA_SECT                    CSA_SECTION
+#define CSA_ORDINAL_INDICATOR_A     GR2A(LSFT(KC_F))        // ª
+#define CSA_ORDA                    CSA_ORDINAL_INDICATOR_A
+#define CSA_DEAD_DOUBLE_ACUTE       LSFT(CSA_DEAD_ACUTE)    // ˝
+#define CSA_DDCT                    CSA_DEAD_DOUBLE_ACUTE
+#define CSA_DEAD_CARON              GR2A(LSFT(CSA_E_GRAVE)) // dead ˇ
+#define CSA_DCAR                    CSA_DEAD_CARON
+#define CSA_DEAD_BREVE              GR2A(LSFT(CSA_A_GRAVE)) // dead ˘
+#define CSA_DBRV                    CSA_DEAD_BREVE
+
+// Fourth row
+#define CSA_BROKEN_PIPE         GR2A(LSFT(CSA_U_GRAVE)) // ¦
+#define CSA_BPIP                CSA_BROKEN_PIPE
+#define CSA_COPYRIGHT           GR2A(LSFT(KC_C))        // ©
+#define CSA_CPRT                CSA_COPYRIGHT
+#define CSA_LEFT_QUOTE          GR2A(LSFT(KC_V))        // ‘
+#define CSA_LQOT                CSA_LEFT_QUOTE
+#define CSA_RIGHT_QUOTE         GR2A(LSFT(KC_B))        // ’
+#define CSA_RQOT                CSA_RIGHT_QUOTE
+#define CSA_EIGHTH_NOTE         GR2A(LSFT(KC_N))        // ♪
+#define CSA_8NOT                CSA_EIGHTH_NOTE
+#define CSA_ORDINAL_INDICATOR_O GR2A(LSFT(KC_M))        // º
+#define CSA_ORDO                CSA_ORDINAL_INDICATOR_O
+#define CSA_TIMES               GR2A(LSFT(KC_COMMA))    // ×
+#define CSA_TIMS                CSA_TIMES
+#define CSA_OBELUS              GR2A(LSFT(KC_DOT))      // ÷
+#define CSA_OBEL                CSA_OBELUS
+// more conventional name of the symbol
+#define CSA_DIVISION_SIGN       CSA_OBELUS
+#define CSA_DVSN                CSA_DIVISION_SIGN
+// TODO GR2A(LSFT(CSA_E_ACUTE))
+
+#endif
diff --git a/quantum/keymap_extras/keymap_colemak.h b/quantum/keymap_extras/keymap_colemak.h
index 8a418c615..b8d615748 100644
--- a/quantum/keymap_extras/keymap_colemak.h
+++ b/quantum/keymap_extras/keymap_colemak.h
@@ -1,7 +1,7 @@
 #ifndef KEYMAP_COLEMAK_H
 #define KEYMAP_COLEMAK_H
 
-#include "keymap_common.h"
+#include "keymap.h"
 // For software implementation of colemak
 #define CM_Q    KC_Q
 #define CM_W    KC_W
diff --git a/quantum/keymap_extras/keymap_dvorak.h b/quantum/keymap_extras/keymap_dvorak.h
index d172e0019..a0feed850 100644
--- a/quantum/keymap_extras/keymap_dvorak.h
+++ b/quantum/keymap_extras/keymap_dvorak.h
@@ -1,7 +1,7 @@
 #ifndef KEYMAP_DVORAK_H
 #define KEYMAP_DVORAK_H
 
-#include "keymap_common.h"
+#include "keymap.h"
 
 // Normal characters
 #define DV_GRV  KC_GRV
@@ -18,18 +18,19 @@
 #define DV_LBRC KC_MINS
 #define DV_RBRC KC_EQL
 
-#define DV_QUOT KC_Q
+#define DV_QUOT KC_Q
 #define DV_COMM KC_W
 #define DV_DOT  KC_E
 #define DV_P    KC_R
 #define DV_Y    KC_T
 #define DV_F    KC_Y
 #define DV_G    KC_U
-#define DV_C    KC_I
+#define DV_C    KC_I
 #define DV_R    KC_O
 #define DV_L    KC_P
 #define DV_SLSH KC_LBRC
 #define DV_EQL  KC_RBRC
+#define DV_BSLS KC_BSLS
 
 #define DV_A    KC_A
 #define DV_O    KC_S
@@ -69,4 +70,16 @@
 #define DV_LCBR LSFT(DV_LBRC)
 #define DV_RCBR LSFT(DV_RBRC)
 
-#endif
\ No newline at end of file
+#define DV_DQUO LSFT(DV_QUOT)
+#define DV_LABK LSFT(DV_COMM)
+#define DV_RABK LSFT(DV_DOT)
+
+#define DV_QUES LSFT(DV_SLSH)
+#define DV_PLUS LSFT(DV_EQL)
+#define DV_PIPE LSFT(DV_BSLS)
+
+#define DV_UNDS LSFT(DV_MINS)
+
+#define DV_COLN LSFT(DV_SCLN)
+
+#endif
diff --git a/quantum/keymap_extras/keymap_dvp.h b/quantum/keymap_extras/keymap_dvp.h
new file mode 100644
index 000000000..83f49a52b
--- /dev/null
+++ b/quantum/keymap_extras/keymap_dvp.h
@@ -0,0 +1,82 @@
+#ifndef KEYMAP_DVP_H
+#define KEYMAP_DVP_H
+
+#include "keymap.h"
+
+// Normal characters
+#define DP_DLR  KC_GRV
+#define DP_AMPR KC_1
+#define DP_LBRC KC_2
+#define DP_LCBR KC_3
+#define DP_RCBR KC_4
+#define DP_LPRN KC_5
+#define DP_EQL  KC_6
+#define DP_ASTR KC_7
+#define DP_RPRN KC_8
+#define DP_PLUS KC_9
+#define DP_RBRC KC_0
+#define DP_EXLM KC_MINS
+#define DP_HASH KC_EQL
+
+#define DP_SCLN KC_Q
+#define DP_COMM KC_W
+#define DP_DOT  KC_E
+#define DP_P    KC_R
+#define DP_Y    KC_T
+#define DP_F    KC_Y
+#define DP_G    KC_U
+#define DP_C    KC_I
+#define DP_R    KC_O
+#define DP_L    KC_P
+#define DP_SLSH KC_LBRC
+#define DP_AT   KC_RBRC
+#define DP_BSLS KC_BSLS
+
+#define DP_A    KC_A
+#define DP_O    KC_S
+#define DP_E    KC_D
+#define DP_U    KC_F
+#define DP_I    KC_G
+#define DP_D    KC_H
+#define DP_H    KC_J
+#define DP_T    KC_K
+#define DP_N    KC_L
+#define DP_S    KC_SCLN
+#define DP_MINS KC_QUOT
+
+#define DP_QUOT KC_Z
+#define DP_Q    KC_X
+#define DP_J    KC_C
+#define DP_K    KC_V
+#define DP_X    KC_B
+#define DP_B    KC_N
+#define DP_M    KC_M
+#define DP_W    KC_COMM
+#define DP_V    KC_DOT
+#define DP_Z    KC_SLSH
+
+// Shifted characters
+#define DP_TILD LSFT(DP_DLR)
+#define DP_PERC LSFT(DP_AMPR)
+#define DP_7    LSFT(DP_LBRC)
+#define DP_5    LSFT(DP_LCBR)
+#define DP_3    LSFT(DP_RCBR)
+#define DP_1    LSFT(DP_LPRN)
+#define DP_9    LSFT(DP_EQL)
+#define DP_0    LSFT(DP_ASTR)
+#define DP_2    LSFT(DP_RPRN)
+#define DP_4    LSFT(DP_PLUS)
+#define DP_6    LSFT(DP_RBRC)
+#define DP_8    LSFT(DP_EXLM)
+#define DP_GRV  LSFT(DP_HASH)
+
+#define DP_COLN LSFT(DP_SCLN)
+#define DP_LABK LSFT(DP_COMM)
+#define DP_RABK LSFT(DP_DOT)
+#define DP_QUES LSFT(DP_SLSH)
+#define DP_CIRC LSFT(DP_AT)
+#define DP_PIPE LSFT(DP_BSLS)
+#define DP_UNDS LSFT(DP_MINS)
+#define DP_DQUO LSFT(DP_QUOT)
+
+#endif
diff --git a/quantum/keymap_extras/keymap_fr_ch.h b/quantum/keymap_extras/keymap_fr_ch.h
new file mode 100644
index 000000000..87d4bb24c
--- /dev/null
+++ b/quantum/keymap_extras/keymap_fr_ch.h
@@ -0,0 +1,98 @@
+#ifndef KEYMAP_FR_CH
+#define KEYMAP_FR_CH
+
+#include "keymap.h"
+
+// Alt gr
+#define ALGR(kc) RALT(kc)
+#define FR_CH_ALGR KC_RALT
+
+// normal characters
+#define FR_CH_Z KC_Y
+#define FR_CH_Y KC_Z
+
+#define FR_CH_A KC_A
+#define FR_CH_B KC_B
+#define FR_CH_C KC_C
+#define FR_CH_D KC_D
+#define FR_CH_E KC_E
+#define FR_CH_F KC_F
+#define FR_CH_G KC_G
+#define FR_CH_H KC_H
+#define FR_CH_I KC_I
+#define FR_CH_J KC_J
+#define FR_CH_K KC_K
+#define FR_CH_L KC_L
+#define FR_CH_M KC_M
+#define FR_CH_N KC_N
+#define FR_CH_O KC_O
+#define FR_CH_P KC_P
+#define FR_CH_Q KC_Q
+#define FR_CH_R KC_R
+#define FR_CH_S KC_S
+#define FR_CH_T KC_T
+#define FR_CH_U KC_U
+#define FR_CH_V KC_V
+#define FR_CH_W KC_W
+#define FR_CH_X KC_X
+
+#define FR_CH_0 KC_0
+#define FR_CH_1 KC_1
+#define FR_CH_2 KC_2
+#define FR_CH_3 KC_3
+#define FR_CH_4 KC_4
+#define FR_CH_5 KC_5
+#define FR_CH_6 KC_6
+#define FR_CH_7 KC_7
+#define FR_CH_8 KC_8
+#define FR_CH_9 KC_9
+
+#define FR_CH_DOT KC_DOT
+#define FR_CH_COMM KC_COMM
+
+#define FR_CH_QUOT KC_MINS
+#define FR_CH_AE KC_QUOT
+#define FR_CH_UE KC_LBRC
+#define FR_CH_OE KC_SCLN
+
+#define FR_CH_CIRC KC_EQL // accent circumflex ^ and grave ` and ~
+#define FR_CH_LESS KC_NUBS // < and > and backslash
+#define FR_CH_MINS KC_SLSH // - and _
+#define FR_CH_DLR KC_BSLS // $, £ and }
+#define FR_CH_PARA KC_GRV // § and ring °
+#define FR_CH_DIAE KC_RBRC // accent ¨
+
+// shifted characters
+#define FR_CH_RING LSFT(KC_GRV) // °
+#define FR_CH_EXLM LSFT(KC_RBRC) // !
+#define FR_CH_PLUS LSFT(KC_1) // +
+#define FR_CH_DQOT LSFT(KC_2) // "
+#define FR_CH_ASTR LSFT(KC_3) // *
+#define FR_CH_PERC LSFT(KC_5) // %
+#define FR_CH_AMPR LSFT(KC_6) // &
+#define FR_CH_SLSH LSFT(KC_7) // /
+#define FR_CH_LPRN LSFT(KC_8) // (
+#define FR_CH_RPRN LSFT(KC_9) // )
+#define FR_CH_EQL  LSFT(KC_0) // =
+#define FR_CH_QST  LSFT(FR_CH_QUOT) // ?
+#define FR_CH_MORE LSFT(FR_CH_LESS) // >
+#define FR_CH_COLN LSFT(KC_DOT) // :
+#define FR_CH_SCLN LSFT(KC_COMM) // ;
+#define FR_CH_UNDS LSFT(FR_CH_MINS) // _
+#define FR_CH_CCED LSFT(KC_4) // ç
+#define FR_CH_GRV  LSFT(FR_CH_CIRC) // accent grave `
+
+// Alt Gr-ed characters
+#define FR_CH_LCBR ALGR(KC_QUOT) // {
+#define FR_CH_LBRC ALGR(KC_LBRC) // [
+#define FR_CH_RBRC ALGR(KC_9) // ]
+#define FR_CH_RCBR ALGR(KC_0) // }
+#define FR_CH_BSLS ALGR(FR_CH_LESS) // backslash
+#define FR_CH_AT   ALGR(KC_2) // @
+#define FR_CH_EURO ALGR(KC_E) // €
+#define FR_CH_TILD ALGR(FR_CH_CIRC) // ~
+#define FR_CH_PIPE ALGR(KC_1) // |
+#define FR_CH_HASH ALGR(KC_3) // #
+#define FR_CH_ACUT ALGR(FR_CH_QUOT) // accent acute ´
+
+#endif
diff --git a/quantum/keymap_extras/keymap_french.h b/quantum/keymap_extras/keymap_french.h
index ccfaed8f0..834c69650 100644
--- a/quantum/keymap_extras/keymap_french.h
+++ b/quantum/keymap_extras/keymap_french.h
@@ -1,10 +1,10 @@
 #ifndef KEYMAP_FRENCH_H
 #define KEYMAP_FRENCH_H
 
-#include "keymap_common.h"
+#include "keymap.h"
 
 // Alt gr
-#define ALGR(kc) kc | 0x1400
+#define ALGR(kc) RALT(kc)
 #define NO_ALGR KC_RALT
 
 // Normal characters
@@ -75,9 +75,9 @@
 #define FR_CIRC ALGR(KC_9)
 #define FR_AT   ALGR(KC_0)
 #define FR_RBRC ALGR(FR_RPRN)
-#define FR_LCBR ALGR(FR_EQL)
+#define FR_RCBR ALGR(FR_EQL)
 
 #define FR_EURO ALGR(KC_E)
 #define FR_BULT ALGR(FR_DLR)
 
-#endif
\ No newline at end of file
+#endif
diff --git a/quantum/keymap_extras/keymap_french_osx.h b/quantum/keymap_extras/keymap_french_osx.h
index eb31bfb4d..004d73ee2 100644
--- a/quantum/keymap_extras/keymap_french_osx.h
+++ b/quantum/keymap_extras/keymap_french_osx.h
@@ -1,7 +1,7 @@
 #ifndef KEYMAP_FRENCH_OSX_H
 #define KEYMAP_FRENCH_OSX_H
 
-#include "keymap_common.h"
+#include "keymap.h"
 
 // Normal characters
 #define FR_AT   KC_GRV
diff --git a/quantum/keymap_extras/keymap_german.h b/quantum/keymap_extras/keymap_german.h
index dbad26f8a..7e2e0ed44 100644
--- a/quantum/keymap_extras/keymap_german.h
+++ b/quantum/keymap_extras/keymap_german.h
@@ -1,10 +1,10 @@
 #ifndef KEYMAP_GERMAN
 #define KEYMAP_GERMAN
 
-#include "keymap_common.h"
+#include "keymap.h"
 
 // Alt gr
-#define ALGR(kc) kc | 0x1400
+#define ALGR(kc) RALT(kc)
 #define DE_ALGR KC_RALT
 
 // normal characters
diff --git a/quantum/keymap_extras/keymap_german_ch.h b/quantum/keymap_extras/keymap_german_ch.h
new file mode 100644
index 000000000..b66d582a4
--- /dev/null
+++ b/quantum/keymap_extras/keymap_german_ch.h
@@ -0,0 +1,102 @@
+#ifndef KEYMAP_SWISS_GERMAN
+#define KEYMAP_SWISS_GERMAN
+
+#include "keymap.h"
+
+// Alt gr
+#define ALGR(kc) RALT(kc)
+#define CH_ALGR KC_RALT
+
+// normal characters
+#define CH_Z KC_Y
+#define CH_Y KC_Z
+
+#define CH_A KC_A
+#define CH_B KC_B
+#define CH_C KC_C
+#define CH_D KC_D
+#define CH_E KC_E
+#define CH_F KC_F
+#define CH_G KC_G
+#define CH_H KC_H
+#define CH_I KC_I
+#define CH_J KC_J
+#define CH_K KC_K
+#define CH_L KC_L
+#define CH_M KC_M
+#define CH_N KC_N
+#define CH_O KC_O
+#define CH_P KC_P
+#define CH_Q KC_Q
+#define CH_R KC_R
+#define CH_S KC_S
+#define CH_T KC_T
+#define CH_U KC_U
+#define CH_V KC_V
+#define CH_W KC_W
+#define CH_X KC_X
+
+#define CH_0 KC_0
+#define CH_1 KC_1
+#define CH_2 KC_2
+#define CH_3 KC_3
+#define CH_4 KC_4
+#define CH_5 KC_5
+#define CH_6 KC_6
+#define CH_7 KC_7
+#define CH_8 KC_8
+#define CH_9 KC_9
+
+#define CH_DOT KC_DOT
+#define CH_COMM KC_COMM
+
+#define CH_QUOT KC_MINS // ' ? ´
+#define CH_AE KC_QUOT
+#define CH_UE KC_LBRC
+#define CH_OE KC_SCLN
+
+#define CH_PARA KC_GRAVE // secction sign § and °
+#define CH_CARR KC_EQL // carret ^ ` ~
+#define CH_DIER KC_RBRC // dieresis ¨ ! ]
+#define CH_DLR KC_BSLS // $ £ }
+#define CH_LESS KC_NUBS // < and > and backslash
+#define CH_MINS KC_SLSH // - and _
+
+// shifted characters
+#define CH_RING LSFT(CH_PARA) // °
+#define CH_PLUS LSFT(KC_1) // +
+#define CH_DQOT LSFT(KC_2) // "
+#define CH_PAST LSFT(KC_3) // *
+#define CH_CELA  LSFT(KC_4) // ç
+#define CH_PERC LSFT(KC_5) // %
+#define CH_AMPR LSFT(KC_6) // &
+#define CH_SLSH LSFT(KC_7) // /
+#define CH_LPRN LSFT(KC_8) // (
+#define CH_RPRN LSFT(KC_9) // )
+#define CH_EQL  LSFT(KC_0) // =
+#define CH_QST  LSFT(CH_QUOT) // ?
+#define CH_GRV  LSFT(CH_CARR) // `
+#define CH_EXLM LSFT(CH_DIER) // !
+#define CH_POND LSFT(CH_DLR) // £
+#define CH_MORE LSFT(CH_LESS) // >
+#define CH_COLN LSFT(KC_DOT) // :
+#define CH_SCLN LSFT(KC_COMM) // ;
+#define CH_UNDS LSFT(CH_MINS) // _
+
+// Alt Gr-ed characters
+#define CH_BRBR ALGR(KC_1) // ¦ brocken bar
+#define CH_AT ALGR(KC_2) // @
+#define CH_HASH ALGR(KC_3) // #
+#define CH_NOTL ALGR(KC_6) // ¬ negative logic
+#define CH_PIPE ALGR(KC_7) // |
+#define CH_CENT ALGR(KC_8) // ¢ cent
+#define CH_ACUT ALGR(CH_QUOT) // ´
+#define CH_TILD ALGR(CH_CARR) // ~
+#define CH_EURO ALGR(KC_E) // €
+#define CH_LBRC ALGR(CH_UE) // [
+#define CH_RBRC ALGR(CH_DIER) // ]
+#define CH_LCBR ALGR(CH_AE) // {
+#define CH_RCBR ALGR(CH_DLR) // }
+#define CH_BSLS ALGR(CH_LESS) // backslash
+
+#endif
diff --git a/quantum/keymap_extras/keymap_german_osx.h b/quantum/keymap_extras/keymap_german_osx.h
index b011561e2..f63f06618 100644
--- a/quantum/keymap_extras/keymap_german_osx.h
+++ b/quantum/keymap_extras/keymap_german_osx.h
@@ -1,100 +1,97 @@
 #ifndef KEYMAP_GERMAN_OSX
 #define KEYMAP_GERMAN_OSX
 
-#ifdef KEYMAP_GERMAN
-        #warning redefining german keys
-#endif
-#include "keymap_common.h"
+#include "keymap.h"
 
 // Alt gr
 
 // normal characters
-#define DE_Z KC_Y
-#define DE_Y KC_Z
+#define DE_OSX_Z KC_Y
+#define DE_OSX_Y KC_Z
 
-#define DE_A KC_A 
-#define DE_B KC_B
-#define DE_C KC_C
-#define DE_D KC_D
-#define DE_E KC_E
-#define DE_F KC_F
-#define DE_G KC_G
-#define DE_H KC_H
-#define DE_I KC_I
-#define DE_J KC_J
-#define DE_K KC_K
-#define DE_L KC_L
-#define DE_M KC_M
-#define DE_N KC_N
-#define DE_O KC_O
-#define DE_P KC_P
-#define DE_Q KC_Q
-#define DE_R KC_R
-#define DE_S KC_S
-#define DE_T KC_T
-#define DE_U KC_U
-#define DE_V KC_V
-#define DE_W KC_W
-#define DE_X KC_X
+#define DE_OSX_A KC_A
+#define DE_OSX_B KC_B
+#define DE_OSX_C KC_C
+#define DE_OSX_D KC_D
+#define DE_OSX_E KC_E
+#define DE_OSX_F KC_F
+#define DE_OSX_G KC_G
+#define DE_OSX_H KC_H
+#define DE_OSX_I KC_I
+#define DE_OSX_J KC_J
+#define DE_OSX_K KC_K
+#define DE_OSX_L KC_L
+#define DE_OSX_M KC_M
+#define DE_OSX_N KC_N
+#define DE_OSX_O KC_O
+#define DE_OSX_P KC_P
+#define DE_OSX_Q KC_Q
+#define DE_OSX_R KC_R
+#define DE_OSX_S KC_S
+#define DE_OSX_T KC_T
+#define DE_OSX_U KC_U
+#define DE_OSX_V KC_V
+#define DE_OSX_W KC_W
+#define DE_OSX_X KC_X
 
-#define DE_0 KC_0
-#define DE_1 KC_1
-#define DE_2 KC_2
-#define DE_3 KC_3
-#define DE_4 KC_4
-#define DE_5 KC_5
-#define DE_6 KC_6
-#define DE_7 KC_7
-#define DE_8 KC_8
-#define DE_9 KC_9
+#define DE_OSX_0 KC_0
+#define DE_OSX_1 KC_1
+#define DE_OSX_2 KC_2
+#define DE_OSX_3 KC_3
+#define DE_OSX_4 KC_4
+#define DE_OSX_5 KC_5
+#define DE_OSX_6 KC_6
+#define DE_OSX_7 KC_7
+#define DE_OSX_8 KC_8
+#define DE_OSX_9 KC_9
 
-#define DE_DOT KC_DOT
-#define DE_COMM KC_COMM
+#define DE_OSX_DOT KC_DOT
+#define DE_OSX_COMM KC_COMM
 
-#define DE_SS KC_MINS
-#define DE_AE KC_QUOT
-#define DE_UE KC_LBRC
-#define DE_OE KC_SCLN
+#define DE_OSX_SS KC_MINS
+#define DE_OSX_AE KC_QUOT
+#define DE_OSX_UE KC_LBRC
+#define DE_OSX_OE KC_SCLN
 
-#define DE_CIRC KC_NUBS // accent circumflex ^ and ring °
-#define DE_ACUT KC_EQL // accent acute ´ and grave `
-#define DE_PLUS KC_RBRC // + and * and ~
-#define DE_HASH KC_BSLS // # and '
-#define DE_LESS KC_GRV // < and > and |
-#define DE_MINS KC_SLSH // - and _
+#define DE_OSX_CIRC KC_NUBS // accent circumflex ^ and ring °
+#define DE_OSX_ACUT KC_EQL // accent acute ´ and grave `
+#define DE_OSX_PLUS KC_RBRC // + and * and ~
+#define DE_OSX_HASH KC_BSLS // # and '
+#define DE_OSX_LESS KC_GRV // < and > and |
+#define DE_OSX_MINS KC_SLSH // - and _
 
 // shifted characters
-#define DE_RING LSFT(DE_CIRC) // °
-#define DE_EXLM LSFT(KC_1) // !
-#define DE_DQOT LSFT(KC_2) // "
-#define DE_PARA LSFT(KC_3) // §
-#define DE_DLR  LSFT(KC_4) // $
-#define DE_PERC LSFT(KC_5) // %
-#define DE_AMPR LSFT(KC_6) // &
-#define DE_SLSH LSFT(KC_7) // /
-#define DE_LPRN LSFT(KC_8) // (
-#define DE_RPRN LSFT(KC_9) // )
-#define DE_EQL  LSFT(KC_0) // =
-#define DE_QST  LSFT(DE_SS) // ?
-#define DE_GRV  LSFT(DE_ACUT) // `
-#define DE_ASTR LSFT(DE_PLUS) // *
-#define DE_QUOT LSFT(DE_HASH) // '
-#define DE_MORE LSFT(DE_LESS) // >
-#define DE_COLN LSFT(KC_DOT) // :
-#define DE_SCLN LSFT(KC_COMM) // ;
-#define DE_UNDS LSFT(DE_MINS) // _
+#define DE_OSX_RING LSFT(DE_OSX_CIRC) // °
+#define DE_OSX_EXLM LSFT(KC_1) // !
+#define DE_OSX_DQOT LSFT(KC_2) // "
+#define DE_OSX_PARA LSFT(KC_3) // §
+#define DE_OSX_DLR  LSFT(KC_4) // $
+#define DE_OSX_PERC LSFT(KC_5) // %
+#define DE_OSX_AMPR LSFT(KC_6) // &
+#define DE_OSX_SLSH LSFT(KC_7) // /
+#define DE_OSX_LPRN LSFT(KC_8) // (
+#define DE_OSX_RPRN LSFT(KC_9) // )
+#define DE_OSX_EQL  LSFT(KC_0) // =
+#define DE_OSX_QST  LSFT(DE_OSX_SS) // ?
+#define DE_OSX_GRV  LSFT(DE_OSX_ACUT) // `
+#define DE_OSX_ASTR LSFT(DE_OSX_PLUS) // *
+#define DE_OSX_QUOT LSFT(DE_OSX_HASH) // '
+#define DE_OSX_MORE LSFT(DE_OSX_LESS) // >
+#define DE_OSX_COLN LSFT(KC_DOT) // :
+#define DE_OSX_SCLN LSFT(KC_COMM) // ;
+#define DE_OSX_UNDS LSFT(DE_OSX_MINS) // _
 
 // Alt-ed characters
-#define DE_SQ2 LALT(KC_2) // ²
-#define DE_SQ3 LALT(KC_3) // ³
-#define DE_LCBR LALT(KC_7) // {
-#define DE_LBRC LALT(KC_5) // [
-#define DE_RBRC LALT(KC_6) // ]
-#define DE_RCBR LALT(KC_9) // }
-#define DE_BSLS LALT(LSFT(KC_7)) // backslash
-#define DE_AT  LALT(DE_L) // @
-#define DE_EURO LALT(KC_E) // €
-#define DE_TILD LALT(DE_N) // ~
-#define DE_PIPE LALT(DE_7) // |
+//#define DE_OSX_SQ2 LALT(KC_2) // ²
+//#define DE_OSX_SQ3 LALT(KC_3) // ³
+#define DE_OSX_LCBR LALT(KC_8) // {
+#define DE_OSX_LBRC LALT(KC_5) // [
+#define DE_OSX_RBRC LALT(KC_6) // ]
+#define DE_OSX_RCBR LALT(KC_9) // }
+#define DE_OSX_BSLS LALT(LSFT(KC_7)) // backslash
+#define DE_OSX_AT  LALT(DE_OSX_L) // @
+#define DE_OSX_EURO LALT(KC_E) // €
+#define DE_OSX_TILD LALT(DE_OSX_N) // ~
+#define DE_OSX_PIPE LALT(DE_OSX_7) // |
 
 #endif
diff --git a/quantum/keymap_extras/keymap_neo2.h b/quantum/keymap_extras/keymap_neo2.h
index 055d7d0d1..80439af34 100644
--- a/quantum/keymap_extras/keymap_neo2.h
+++ b/quantum/keymap_extras/keymap_neo2.h
@@ -1,8 +1,8 @@
 #ifndef KEYMAP_NEO2
 #define KEYMAP_NEO2
 
-#include "keymap_common.h"
-#include "keymap_extras/keymap_german.h"
+#include "keymap.h"
+#include "keymap_german.h"
 
 #define NEO_A KC_D
 #define NEO_B KC_N
@@ -35,6 +35,25 @@
 #define NEO_UE DE_Y
 #define NEO_SS DE_UE
 
+#define NEO_DOT DE_DOT
+#define NEO_COMM DE_COMM
+
+#define NEO_1 DE_1
+#define NEO_2 DE_2
+#define NEO_3 DE_3
+#define NEO_4 DE_4
+#define NEO_5 DE_5
+#define NEO_6 DE_6
+#define NEO_7 DE_7
+#define NEO_8 DE_8
+#define NEO_9 DE_9
+#define NEO_0 DE_0
+#define NEO_MINS DE_SS
+
+#define NEO_ACUT DE_PLUS
+#define NEO_GRV DE_ACUT
+#define NEO_CIRC DE_CIRC
+
 #define NEO_L1_L KC_CAPS
 #define NEO_L1_R DE_HASH
 
diff --git a/quantum/keymap_extras/keymap_nordic.h b/quantum/keymap_extras/keymap_nordic.h
index 7ef41fb79..da5c82975 100644
--- a/quantum/keymap_extras/keymap_nordic.h
+++ b/quantum/keymap_extras/keymap_nordic.h
@@ -1,10 +1,10 @@
 #ifndef KEYMAP_NORDIC_H
 #define KEYMAP_NORDIC_H
 
-#include "keymap_common.h"
+#include "keymap.h"
 
 // Alt gr
-#define ALGR(kc) kc | 0x1400
+#define ALGR(kc) RALT(kc)
 #define NO_ALGR KC_RALT
 
 // Normal characters
@@ -25,7 +25,7 @@
 #define NO_SECT LSFT(NO_HALF)
 #define NO_QUO2 LSFT(KC_2)
 #define NO_BULT LSFT(KC_4)
-#define NO_AMP  LSFT(KC_6)
+#define NO_AMPR LSFT(KC_6)
 #define NO_SLSH LSFT(KC_7)
 #define NO_LPRN LSFT(KC_8)
 #define NO_RPRN LSFT(KC_9)
diff --git a/quantum/keymap_extras/keymap_norwegian.h b/quantum/keymap_extras/keymap_norwegian.h
new file mode 100644
index 000000000..5c4e8c495
--- /dev/null
+++ b/quantum/keymap_extras/keymap_norwegian.h
@@ -0,0 +1,41 @@
+#ifndef KEYMAP_NORWEGIAN_H
+#define KEYMAP_NORWEGIAN_H
+
+#include "keymap_nordic.h"
+
+// There are slight differrences in the keyboards in the nordic contries
+
+// Norwegian redifinitions from the nordic keyset
+#undef NO_ACUT
+#define NO_ACUT ALGR(NO_BSLS)  // ´
+#undef NO_AE
+#define NO_AE   KC_QUOT  // æ
+#undef NO_BSLS
+#define NO_BSLS KC_EQL  // '\'
+#undef NO_CIRC
+#define NO_CIRC LSFT(KC_RBRC)  // ^
+#undef NO_GRV
+#define NO_GRV  LSFT(NO_BSLS)  //
+#undef NO_OSLH
+#define NO_OSLH KC_SCLN  // ø
+#undef NO_PIPE
+#define NO_PIPE KC_GRV  // |
+
+// Additional norwegian keys not defined in the nordic keyset
+#define NO_AA   KC_LBRC  // å
+#define NO_ASTR LSFT(KC_BSLS)  // *
+
+// Norwegian unique MAC characters
+#define NO_ACUT_MAC KC_EQL  // =
+#define NO_APOS_MAC KC_NUBS  // '
+#define NO_AT_MAC   KC_BSLS  // @
+#define NO_BSLS_MAC ALGR(LSFT(KC_7)) // '\'
+#define NO_DLR_MAC  LSFT(KC_4) // $
+#define NO_GRV_MAC ALGR(NO_BSLS) // `
+#define NO_GRTR_MAC LSFT(KC_GRV)  // >
+#define NO_LCBR_MAC ALGR(LSFT(KC_8))  // }
+#define NO_LESS_MAC KC_GRV  // >
+#define NO_PIPE_MAC ALGR(KC_7)  // |
+#define NO_RCBR_MAC ALGR(LSFT(KC_9))  // }
+
+#endif
diff --git a/quantum/keymap_extras/keymap_plover.h b/quantum/keymap_extras/keymap_plover.h
new file mode 100644
index 000000000..9b88f7d84
--- /dev/null
+++ b/quantum/keymap_extras/keymap_plover.h
@@ -0,0 +1,32 @@
+#ifndef KEYMAP_PLOVER_H
+#define KEYMAP_PLOVER_H
+
+#include "keymap.h"
+
+#define PV_NUM  KC_1
+#define PV_LS   KC_Q
+#define PV_LT   KC_W
+#define PV_LP   KC_E
+#define PV_LH   KC_R
+#define PV_LK   KC_S
+#define PV_LW   KC_D
+#define PV_LR   KC_F
+
+#define PV_STAR KC_Y
+#define PV_RF   KC_U
+#define PV_RP   KC_I
+#define PV_RL   KC_O
+#define PV_RT   KC_P
+#define PV_RD   KC_LBRC
+#define PV_RR   KC_J
+#define PV_RB   KC_K
+#define PV_RG   KC_L
+#define PV_RS   KC_SCLN
+#define PV_RZ   KC_QUOT
+
+#define PV_A    KC_C
+#define PV_O    KC_V
+#define PV_E    KC_N
+#define PV_U    KC_M
+
+#endif
diff --git a/quantum/keymap_extras/keymap_russian.h b/quantum/keymap_extras/keymap_russian.h
new file mode 100644
index 000000000..237e9abde
--- /dev/null
+++ b/quantum/keymap_extras/keymap_russian.h
@@ -0,0 +1,77 @@
+#ifndef KEYMAP_RUSSIAN_H
+#define KEYMAP_RUSSIAN_H
+
+#include "keymap.h"
+
+// Normal Chracters      // reg   SHIFT
+#define RU_A     KC_F    // а and А
+#define RU_BE    KC_COMM // б and Б
+#define RU_VE    KC_D    // в and В
+#define RU_GHE   KC_U    // г and Г
+#define RU_DE    KC_L    // д and Д
+#define RU_IE    KC_T    // е and Е
+#define RU_IO    KC_GRV  // ё and Ё
+#define RU_ZHE   KC_SCLN // ж and Ж
+#define RU_ZE    KC_P    // з and З
+#define RU_I     KC_B    // и and И
+#define RU_SRT_I KC_Q    // й and Й
+#define RU_KA    KC_R    // к and К
+#define RU_EL    KC_K    // л and Л
+#define RU_EM    KC_V    // м and М
+#define RU_EN    KC_Y    // н and Н
+#define RU_O     KC_J    // о and О
+#define RU_PE    KC_G    // п and П
+#define RU_ER    KC_H    // р and Р
+#define RU_ES    KC_C    // с and С
+#define RU_TE    KC_N    // т and Т
+#define RU_U     KC_E    // у and У
+#define RU_EF    KC_A    // ф and Ф
+#define RU_HA    KC_LBRC // х and Х
+#define RU_TSE   KC_W    // ц and Ц
+#define RU_CHE   KC_X    // ч and Ч
+#define RU_SHA   KC_I    // ш and Ш
+#define RU_SHCHA KC_O    // щ and Щ
+#define RU_HSIGN KC_RBRC // ъ and Ъ
+#define RU_YERU  KC_S    // ы and Ы
+#define RU_SSIGN KC_M    // ь and Ь
+#define RU_E     KC_QUOT // э and Э
+#define RU_YU    KC_DOT  // ю and Ю
+#define RU_YA    KC_Z    // я and Я
+
+#define RU_1     KC_1    // 1 and !
+#define RU_2     KC_2    // 2 and "
+#define RU_3     KC_3    // 3 and №
+#define RU_4     KC_4    // 4 and ;
+#define RU_5     KC_5    // 5 and %
+#define RU_6     KC_6    // 6 and :
+#define RU_7     KC_7    // 7 and ?
+#define RU_8     KC_8    // 8 and *
+#define RU_9     KC_9    // 9 and (
+#define RU_0     KC_0    // 0 and )
+
+#define RU_MINS  KC_MINS // - and _
+#define RU_EQL   KC_EQL  // = and +
+#define RU_BSLS  KC_BSLS // \ and /
+#define RU_DOT   KC_SLSH // . and ,
+
+// Shifted Chracters
+#define RU_EXLM LSFT(RU_1) // !
+#define RU_DQUT LSFT(RU_2) // "
+#define RU_NMRO LSFT(RU_3) // №
+#define RU_SCLN LSFT(RU_4) // ;
+#define RU_PERC LSFT(RU_5) // %
+#define RU_COLN LSFT(RU_6) // :
+#define RU_QUES LSFT(RU_7) // ?
+#define RU_ASTR LSFT(RU_8) // *
+#define RU_LPRN LSFT(RU_9) // (
+#define RU_RPRN LSFT(RU_0) // )
+
+#define RU_UNDR LSFT(RU_MINS) // _
+#define RU_PLUS LSFT(RU_EQL)  // +
+#define RU_SLSH LSFT(RU_BSLS) // /
+#define RU_COMM LSFT(RU_DOT)  // ,
+
+// Alt Gr-ed characters
+#define RU_RUBL RALT(RU_8) // ₽
+
+#endif
diff --git a/quantum/keymap_extras/keymap_spanish.h b/quantum/keymap_extras/keymap_spanish.h
index 7f980afbc..4ba568af2 100644
--- a/quantum/keymap_extras/keymap_spanish.h
+++ b/quantum/keymap_extras/keymap_spanish.h
@@ -1,10 +1,10 @@
 #ifndef KEYMAP_SPANISH_H
 #define KEYMAP_SPANISH_H
 
-#include "keymap_common.h"
+#include "keymap.h"
 
 // Alt gr
-#define ALGR(kc) kc | 0x1400
+#define ALGR(kc) RALT(kc)
 #define NO_ALGR KC_RALT
 
 // Normal characters
@@ -49,7 +49,7 @@
 #define ES_PIPE ALGR(KC_1)
 #define ES_AT   ALGR(KC_2)
 #define ES_HASH ALGR(KC_3)
-#define ES_TILD ALGR(KC_4)
+#define ES_TILD ALGR(ES_NTIL)
 #define ES_EURO ALGR(KC_5)
 #define ES_NOT  ALGR(KC_6)
 
@@ -59,4 +59,4 @@
 #define ES_LCBR ALGR(ES_ACUT)
 #define ES_RCRB ALGR(ES_CCED)
 
-#endif
\ No newline at end of file
+#endif
diff --git a/quantum/keymap_extras/keymap_uk.h b/quantum/keymap_extras/keymap_uk.h
index 5b4bd3c0d..00c87afc3 100644
--- a/quantum/keymap_extras/keymap_uk.h
+++ b/quantum/keymap_extras/keymap_uk.h
@@ -1,10 +1,10 @@
 #ifndef KEYMAP_UK_H
 #define KEYMAP_UK_H
 
-#include "keymap_common.h"
+#include "keymap.h"
 
 // Alt gr
-#define ALGR(kc) kc | 0x1400
+#define ALGR(kc) RALT(kc)
 #define NO_ALGR KC_RALT
 
 // Normal characters
@@ -33,4 +33,4 @@
 
 #define UK_AACT ALGR(KC_A)
 
-#endif
\ No newline at end of file
+#endif
diff --git a/quantum/keymap_extras/keymap_unicode_cyrillic.h b/quantum/keymap_extras/keymap_unicode_cyrillic.h
new file mode 100644
index 000000000..a40626d91
--- /dev/null
+++ b/quantum/keymap_extras/keymap_unicode_cyrillic.h
@@ -0,0 +1,163 @@
+#ifndef KEYMAP_CYRILLIC_H
+#define KEYMAP_CYRILLIC_H
+
+#include "keymap.h"
+
+/*
+ * This is based off of
+ * https://en.wikipedia.org/wiki/Cyrillic_script
+ *
+ * Unicode is iffy, a software implementation is preferred
+ */
+
+// Capital                   Char russian/ukrainian/bulgarian
+#define CY_A     UC(0x0410) // А  rus ukr bul
+#define CY_BE    UC(0x0411) // Б  rus ukr bul
+#define CY_VE    UC(0x0412) // В  rus ukr bul
+#define CY_GHE   UC(0x0413) // Г  rus ukr bul
+#define CY_GHEUP UC(0x0490) // Ґ      ukr
+#define CY_DE    UC(0x0414) // Д  rus ukr bul
+#define CY_DJE   UC(0x0402) // Ђ
+#define CY_GJE   UC(0x0403) // Ѓ
+#define CY_IE    UC(0x0415) // Е  rus ukr bul
+#define CY_IO    UC(0x0401) // Ё  rus
+#define CY_UIE   UC(0x0404) // Є      ukr
+#define CY_ZHE   UC(0x0416) // Ж  rus ukr bul
+#define CY_ZE    UC(0x0417) // З  rus ukr bul
+#define CY_DZE   UC(0x0405) // Ѕ
+#define CY_I     UC(0x0418) // И  rus ukr bul
+#define CY_B_U_I UC(0x0406) // І      ukr
+#define CY_YI    UC(0x0407) // Ї      ukr
+#define CY_SRT_I UC(0x0419) // Й  rus ukr bul
+#define CY_JE    UC(0x0408) // Ј
+#define CY_KA    UC(0x041a) // К  rus ukr bul
+#define CY_EL    UC(0x041b) // Л  rus ukr bul
+#define CY_LJE   UC(0x0409) // Љ
+#define CY_EM    UC(0x041c) // М  rus ukr bul
+#define CY_EN    UC(0x041d) // Н  rus ukr bul
+#define CY_NJE   UC(0x040a) // Њ
+#define CY_O     UC(0x041e) // О  rus ukr bul
+#define CY_PE    UC(0x041f) // П  rus ukr bul
+#define CY_ER    UC(0x0420) // Р  rus ukr bul
+#define CY_ES    UC(0x0421) // С  rus ukr bul
+#define CY_TE    UC(0x0422) // Т  rus ukr bul
+#define CY_TSHE  UC(0x040b) // Ћ
+#define CY_KJE   UC(0x040c) // Ќ
+#define CY_U     UC(0x0423) // У  rus ukr bul
+#define CY_SRT_U UC(0x040e) // Ў
+#define CY_EF    UC(0x0424) // Ф  rus ukr bul
+#define CY_HA    UC(0x0425) // Х  rus     bul
+#define CY_TSE   UC(0x0426) // Ц  rus ukr bul
+#define CY_CHE   UC(0x0427) // Ч  rus ukr bul
+#define CY_DZHE  UC(0x040f) // Џ
+#define CY_SHA   UC(0x0428) // Ш  rus ukr bul
+#define CY_SHCHA UC(0x0429) // Щ  rus ukr bul
+#define CY_HSIGN UC(0x042a) // Ъ  rus     bul
+#define CY_YERU  UC(0x042b) // Ы  rus
+#define CY_SSIGN UC(0x042c) // Ь  rus ukr bul
+#define CY_E     UC(0x042d) // Э  rus
+#define CY_YU    UC(0x042e) // Ю  rus ukr bul
+#define CY_YA    UC(0x042f) // Я  rus ukr bul
+// Important Cyrillic non-Slavic letters
+#define CY_PALOCHKA UC(0x04c0) // Ӏ
+#define CY_SCHWA UC(0x04d8) // Ә
+#define CY_GHE_S UC(0x0492) // Ғ
+#define CY_ZE_D  UC(0x0498) // Ҙ
+#define CY_ES_D  UC(0x04aa) // Ҫ
+#define CY_BR_KA UC(0x04a0) // Ҡ
+#define CY_ZHE_D UC(0x0496) // Җ
+#define CY_KA_D  UC(0x049a) // Қ
+#define CY_EN_D  UC(0x04a2) // Ң
+#define CY_ENGHE UC(0x04a4) // Ҥ
+#define CY_BRD_O UC(0x04e8) // Ө
+#define CY_STR_U UC(0x04ae) // Ү
+#define CY_S_U_S UC(0x04b0) // Ұ
+#define CY_SHHA  UC(0x04ba) // Һ
+#define CY_HA_D  UC(0x04b2) // Ҳ
+
+
+// Small
+#define CY_a     UC(0x0430) // a  rus ukr bul
+#define CY_be    UC(0x0431) // б  rus ukr bul
+#define CY_ve    UC(0x0432) // в  rus ukr bul
+#define CY_ghe   UC(0x0433) // г  rus ukr bul
+#define CY_gheup UC(0x0491) // ґ      ukr
+#define CY_de    UC(0x0434) // д  rus ukr bul
+#define CY_dje   UC(0x0452) // ђ
+#define CY_gje   UC(0x0453) // ѓ
+#define CY_ie    UC(0x0435) // е  rus ukr bul
+#define CY_io    UC(0x0451) // ё  rus
+#define CY_uie   UC(0x0454) // є      ukr
+#define CY_zhe   UC(0x0436) // ж  rus ukr bul
+#define CY_ze    UC(0x0437) // з  rus ukr bul
+#define CY_dze   UC(0x0455) // ѕ
+#define CY_i     UC(0x0438) // и  rus ukr bul
+#define CY_b_u_i UC(0x0456) // і      ukr
+#define CY_yi    UC(0x0457) // ї      ukr
+#define CY_srt_i UC(0x0439) // й  rus ukr bul
+#define CY_je    UC(0x0458) // ј
+#define CY_ka    UC(0x043a) // к  rus ukr bul
+#define CY_el    UC(0x043b) // л  rus ukr bul
+#define CY_lje   UC(0x0459) // љ
+#define CY_em    UC(0x043c) // м  rus ukr bul
+#define CY_en    UC(0x043d) // н  rus ukr bul
+#define CY_nje   UC(0x045a) // њ
+#define CY_o     UC(0x043e) // о  rus ukr bul
+#define CY_pe    UC(0x043f) // п  rus ukr bul
+#define CY_er    UC(0x0440) // р  rus ukr bul
+#define CY_es    UC(0x0441) // с  rus ukr bul
+#define CY_te    UC(0x0442) // т  rus ukr bul
+#define CY_tshe  UC(0x045b) // ћ
+#define CY_kje   UC(0x045c) // ќ
+#define CY_u     UC(0x0443) // у  rus ukr bul
+#define CY_srt_u UC(0x045e) // ў
+#define CY_ef    UC(0x0444) // ф  rus ukr bul
+#define CY_ha    UC(0x0445) // х  rus ukr bul
+#define CY_tse   UC(0x0446) // ц  rus ukr bul
+#define CY_che   UC(0x0447) // ч  rus ukr bul
+#define CY_dzhe  UC(0x045f) // џ
+#define CY_sha   UC(0x0448) // ш  rus ukr bul
+#define CY_shcha UC(0x0449) // щ  rus ukr bul
+#define CY_hsign UC(0x044a) // ъ  rus     bul
+#define CY_yeru  UC(0x044b) // ы  rus
+#define CY_ssign UC(0x044c) // ь  rus ukr bul
+#define CY_e     UC(0x044d) // э  rus
+#define CY_yu    UC(0x044e) // ю  rus ukr bul
+#define CY_ya    UC(0x044f) // я  rus ukr bul
+// Important Cyrillic non-Slavic letters
+#define CY_palochka UC(0x04cf) // ӏ
+#define CY_schwa UC(0x04d9) // ә
+#define CY_ghe_s UC(0x0493) // ғ
+#define CY_ze_d  UC(0x0499) // ҙ
+#define CY_es_d  UC(0x04ab) // ҫ
+#define CY_br_ka UC(0x04a1) // ҡ
+#define CY_zhe_d UC(0x0497) // җ
+#define CY_ka_d  UC(0x049b) // қ
+#define CY_en_d  UC(0x04a3) // ң
+#define CY_enghe UC(0x04a5) // ҥ
+#define CY_brd_o UC(0x04e9) // ө
+#define CY_str_u UC(0x04af) // ү
+#define CY_s_u_s UC(0x04b1) // ұ
+#define CY_shha  UC(0x04bb) // һ
+#define CY_ha_d  UC(0x04b3) // ҳ
+
+
+// Extra
+#define CY_slr_ve UC(0x1c80) // ᲀ CYRILLIC SMALL LETTER ROUNDED VE
+#define CY_ll_de  UC(0x1c81) // ᲁ CYRILLIC SMALL LETTER LONG-LEGGED DE
+#define CY_ZEMLYA UC(0xa640) // Ꙁ CYRILLIC CAPITAL LETTER ZEMLYA
+#define CY_zemlya UC(0xa641) // ꙁ CYRILLIC SMALL LETTER ZEMLYA
+#define CY_RV_DZE UC(0xa644) // Ꙅ CYRILLIC CAPITAL LETTER REVERSED DZE
+#define CY_rv_DZE UC(0xa645) // ꙅ CYRILLIC SMALL LETTER REVERSED DZE
+#define CY_slw_es UC(0x1c83) // ᲃ CYRILLIC SMALL LETTER WIDE ES
+#define CY_st_te  UC(0x1c84) // ᲄ CYRILLIC SMALL LETTER TALL TE
+#define CY_3l_te  UC(0x1c85) // ᲅ CYRILLIC SMALL LETTER THREE-LEGGED TE
+#define CY_thsign UC(0x1c86) // ᲆ CYRILLIC SMALL LETTER TALL HARD SIGN
+#define CY_YERUBY UC(0xa650) // Ꙑ CYRILLIC CAPITAL LETTER YERU WITH BACK YER
+#define CY_yeruby UC(0xa651) // ꙑ CYRILLIC SMALL LETTER YERU WITH BACK YER
+#define CY_RUBL   UC(0x20bd) // ₽
+#define CY_NMRO   UC(0x2116) // №
+
+// The letters Zje and Sje are made for other letters and accent marks
+
+#endif
diff --git a/quantum/keymap_midi.c b/quantum/keymap_midi.c
deleted file mode 100644
index e37ea3103..000000000
--- a/quantum/keymap_midi.c
+++ /dev/null
@@ -1,109 +0,0 @@
-/*
-Copyright 2015 Jack Humbert <jack.humb@gmail.com>
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation, either version 2 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-#include "keymap_common.h"
-#include "keymap_midi.h"
-
-uint8_t starting_note = 0x0C;
-int offset = 7;
-
-void action_function(keyrecord_t *record, uint8_t id, uint8_t opt)
-{
-        if (id != 0) {
-            if (record->event.pressed) {
-                midi_send_noteon(&midi_device, opt, (id & 0xFF), 127);
-            } else {
-                midi_send_noteoff(&midi_device, opt, (id & 0xFF), 127);
-            }
-        }
-
-    if (record->event.key.col == (MATRIX_COLS - 1) && record->event.key.row == (MATRIX_ROWS - 1)) {
-        if (record->event.pressed) {
-            starting_note++;
-            play_note(((double)261.626)*pow(2.0, -1.0)*pow(2.0,(starting_note + SCALE[0 + offset])/12.0+(MATRIX_ROWS - 1)), 0xC);
-            midi_send_cc(&midi_device, 0, 0x7B, 0);
-            midi_send_cc(&midi_device, 1, 0x7B, 0);
-            midi_send_cc(&midi_device, 2, 0x7B, 0);
-            midi_send_cc(&midi_device, 3, 0x7B, 0);
-            midi_send_cc(&midi_device, 4, 0x7B, 0);
-            return;
-        } else {
-            stop_note(((double)261.626)*pow(2.0, -1.0)*pow(2.0,(starting_note + SCALE[0 + offset])/12.0+(MATRIX_ROWS - 1)));
-            stop_all_notes();
-            return;
-        }
-    }
-    if (record->event.key.col == (MATRIX_COLS - 2) && record->event.key.row == (MATRIX_ROWS - 1)) {
-        if (record->event.pressed) {
-            starting_note--;
-            play_note(((double)261.626)*pow(2.0, -1.0)*pow(2.0,(starting_note + SCALE[0 + offset])/12.0+(MATRIX_ROWS - 1)), 0xC);
-            midi_send_cc(&midi_device, 0, 0x7B, 0);
-            midi_send_cc(&midi_device, 1, 0x7B, 0);
-            midi_send_cc(&midi_device, 2, 0x7B, 0);
-            midi_send_cc(&midi_device, 3, 0x7B, 0);
-            midi_send_cc(&midi_device, 4, 0x7B, 0);
-            return;
-        } else {
-            stop_note(((double)261.626)*pow(2.0, -1.0)*pow(2.0,(starting_note + SCALE[0 + offset])/12.0+(MATRIX_ROWS - 1)));
-            stop_all_notes();
-            return;
-        }
-    }
-
-    if (record->event.key.col == (MATRIX_COLS - 3) && record->event.key.row == (MATRIX_ROWS - 1) && record->event.pressed) {
-        offset++;
-        midi_send_cc(&midi_device, 0, 0x7B, 0);
-        midi_send_cc(&midi_device, 1, 0x7B, 0);
-        midi_send_cc(&midi_device, 2, 0x7B, 0);
-        midi_send_cc(&midi_device, 3, 0x7B, 0);
-        midi_send_cc(&midi_device, 4, 0x7B, 0);
-        stop_all_notes();
-        for (int i = 0; i <= 7; i++) {
-            play_note(((double)261.626)*pow(2.0, -1.0)*pow(2.0,(starting_note + SCALE[i + offset])/12.0+(MATRIX_ROWS - 1)), 0xC);
-            _delay_us(80000);
-            stop_note(((double)261.626)*pow(2.0, -1.0)*pow(2.0,(starting_note + SCALE[i + offset])/12.0+(MATRIX_ROWS - 1)));
-            _delay_us(8000);
-        }
-        return;
-    }
-    if (record->event.key.col == (MATRIX_COLS - 4) && record->event.key.row == (MATRIX_ROWS - 1) && record->event.pressed) {
-        offset--;
-        midi_send_cc(&midi_device, 0, 0x7B, 0);
-        midi_send_cc(&midi_device, 1, 0x7B, 0);
-        midi_send_cc(&midi_device, 2, 0x7B, 0);
-        midi_send_cc(&midi_device, 3, 0x7B, 0);
-        midi_send_cc(&midi_device, 4, 0x7B, 0);
-        stop_all_notes();
-        for (int i = 0; i <= 7; i++) {
-            play_note(((double)261.626)*pow(2.0, -1.0)*pow(2.0,(starting_note + SCALE[i + offset])/12.0+(MATRIX_ROWS - 1)), 0xC);
-            _delay_us(80000);
-            stop_note(((double)261.626)*pow(2.0, -1.0)*pow(2.0,(starting_note + SCALE[i + offset])/12.0+(MATRIX_ROWS - 1)));
-            _delay_us(8000);
-        }
-        return;
-    }
-
-    if (record->event.pressed) {
-        // midi_send_noteon(&midi_device, record->event.key.row, starting_note + SCALE[record->event.key.col], 127);
-        midi_send_noteon(&midi_device, 0, (starting_note + SCALE[record->event.key.col + offset])+12*(MATRIX_ROWS - record->event.key.row), 127);
-        play_note(((double)261.626)*pow(2.0, -1.0)*pow(2.0,(starting_note + SCALE[record->event.key.col + offset])/12.0+(MATRIX_ROWS - record->event.key.row)), 0xF);
-    } else {
-        // midi_send_noteoff(&midi_device, record->event.key.row, starting_note + SCALE[record->event.key.col], 127);
-        midi_send_noteoff(&midi_device, 0, (starting_note + SCALE[record->event.key.col + offset])+12*(MATRIX_ROWS - record->event.key.row), 127);
-        stop_note(((double)261.626)*pow(2.0, -1.0)*pow(2.0,(starting_note + SCALE[record->event.key.col + offset])/12.0+(MATRIX_ROWS - record->event.key.row)));
-    }
-}
\ No newline at end of file
diff --git a/quantum/keymap_unicode.c b/quantum/keymap_unicode.c
deleted file mode 100644
index a44965e61..000000000
--- a/quantum/keymap_unicode.c
+++ /dev/null
@@ -1,61 +0,0 @@
-/*
-Copyright 2015 Jack Humbert <jack.humb@gmail.com>
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation, either version 2 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-#include "keymap_common.h"
-
-uint16_t hextokeycode(int hex) {
-    if (hex == 0x0) {
-        return KC_0;
-    } else if (hex < 0xA) {
-        return KC_1 + (hex - 0x1);
-    } else {
-        return KC_A + (hex - 0xA);
-    }
-}
-
-void action_function(keyrecord_t *record, uint8_t id, uint8_t opt)
-{
-
-    // For more info on how this works per OS, see here: https://en.wikipedia.org/wiki/Unicode_input#Hexadecimal_code_input
-
-    if (record->event.pressed) {
-        uint16_t unicode = (opt << 8) | id;
-        register_code(KC_LALT);
-
-        register_code(hextokeycode((unicode & 0xF000) >> 12));
-        unregister_code(hextokeycode((unicode & 0xF000) >> 12));
-        register_code(hextokeycode((unicode & 0x0F00) >> 8));
-        unregister_code(hextokeycode((unicode & 0x0F00) >> 8));
-        register_code(hextokeycode((unicode & 0x00F0) >> 4));
-        unregister_code(hextokeycode((unicode & 0x00F0) >> 4));
-        register_code(hextokeycode((unicode & 0x000F)));
-        unregister_code(hextokeycode((unicode & 0x000F)));
-        
-        /* Test 'a' */
-        // register_code(hextokeycode(0x0));
-        // unregister_code(hextokeycode(0x0));
-        // register_code(hextokeycode(0x0));
-        // unregister_code(hextokeycode(0x0));
-        // register_code(hextokeycode(0x6));
-        // unregister_code(hextokeycode(0x6));
-        // register_code(hextokeycode(0x1));
-        // unregister_code(hextokeycode(0x1));
-
-        unregister_code(KC_LALT);
-    }
-    return;
-}
\ No newline at end of file
diff --git a/quantum/led.c b/quantum/led.c
deleted file mode 100644
index 2c0574660..000000000
--- a/quantum/led.c
+++ /dev/null
@@ -1,38 +0,0 @@
-/*
-Copyright 2012 Jun Wako <wakojun@gmail.com>
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation, either version 2 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-#include <avr/io.h>
-#include "stdint.h"
-#include "led.h"
-
-
-void led_set(uint8_t usb_led)
-{
-    // // Using PE6 Caps Lock LED
-    // if (usb_led & (1<<USB_LED_CAPS_LOCK))
-    // {
-    //     // Output high.
-    //     DDRE |= (1<<6);
-    //     PORTE |= (1<<6);
-    // }
-    // else
-    // {
-    //     // Output low.
-    //     DDRE &= ~(1<<6);
-    //     PORTE &= ~(1<<6);
-    // }
-}
diff --git a/quantum/light_ws2812.c b/quantum/light_ws2812.c
index f20043067..401845e85 100755
--- a/quantum/light_ws2812.c
+++ b/quantum/light_ws2812.c
@@ -19,12 +19,16 @@
 // Setleds for standard RGB
 void inline ws2812_setleds(struct cRGB *ledarray, uint16_t leds)
 {
-   ws2812_setleds_pin(ledarray,leds, _BV(ws2812_pin));
+   // ws2812_setleds_pin(ledarray,leds, _BV(ws2812_pin));
+   ws2812_setleds_pin(ledarray,leds, _BV(RGB_DI_PIN & 0xF));
 }
 
 void inline ws2812_setleds_pin(struct cRGB *ledarray, uint16_t leds, uint8_t pinmask)
 {
-  ws2812_DDRREG |= pinmask; // Enable DDR
+  // ws2812_DDRREG |= pinmask; // Enable DDR
+  // new universal format (DDR)
+  _SFR_IO8((RGB_DI_PIN >> 4) + 1) |= pinmask;
+
   ws2812_sendarray_mask((uint8_t*)ledarray,leds+leds+leds,pinmask);
   _delay_us(50);
 }
@@ -32,14 +36,17 @@ void inline ws2812_setleds_pin(struct cRGB *ledarray, uint16_t leds, uint8_t pin
 // Setleds for SK6812RGBW
 void inline ws2812_setleds_rgbw(struct cRGBW *ledarray, uint16_t leds)
 {
-  ws2812_DDRREG |= _BV(ws2812_pin); // Enable DDR
-  ws2812_sendarray_mask((uint8_t*)ledarray,leds<<2,_BV(ws2812_pin));
+  // ws2812_DDRREG |= _BV(ws2812_pin); // Enable DDR
+  // new universal format (DDR)
+  _SFR_IO8((RGB_DI_PIN >> 4) + 1) |= _BV(RGB_DI_PIN & 0xF);
+
+  ws2812_sendarray_mask((uint8_t*)ledarray,leds<<2,_BV(RGB_DI_PIN & 0xF));
   _delay_us(80);
 }
 
 void ws2812_sendarray(uint8_t *data,uint16_t datlen)
 {
-  ws2812_sendarray_mask(data,datlen,_BV(ws2812_pin));
+  ws2812_sendarray_mask(data,datlen,_BV(RGB_DI_PIN & 0xF));
 }
 
 /*
@@ -108,8 +115,10 @@ void inline ws2812_sendarray_mask(uint8_t *data,uint16_t datlen,uint8_t maskhi)
   uint8_t curbyte,ctr,masklo;
   uint8_t sreg_prev;
 
-  masklo        =~maskhi&ws2812_PORTREG;
-  maskhi |=        ws2812_PORTREG;
+  // masklo  =~maskhi&ws2812_PORTREG;
+  // maskhi |=        ws2812_PORTREG;
+  masklo  =~maskhi&_SFR_IO8((RGB_DI_PIN >> 4) + 2);
+  maskhi |=        _SFR_IO8((RGB_DI_PIN >> 4) + 2);
   sreg_prev=SREG;
   cli();
 
@@ -173,7 +182,7 @@ w_nop16
     "       dec   %0    \n\t"    //  '1' [+2] '0' [+2]
     "       brne  loop%=\n\t"    //  '1' [+3] '0' [+4]
     :   "=&d" (ctr)
-    :   "r" (curbyte), "I" (_SFR_IO_ADDR(ws2812_PORTREG)), "r" (maskhi), "r" (masklo)
+    :   "r" (curbyte), "I" (_SFR_IO_ADDR(_SFR_IO8((RGB_DI_PIN >> 4) + 2))), "r" (maskhi), "r" (masklo)
     );
   }
 
diff --git a/quantum/matrix.c b/quantum/matrix.c
index 95bf4c097..3174e0739 100644
--- a/quantum/matrix.c
+++ b/quantum/matrix.c
@@ -1,6 +1,6 @@
 /*
-Copyright 2012 Jun Wako 
-Generated by planckkeyboard.com (2014 Jack Humbert)
+Copyright 2012 Jun Wako
+Copyright 2014 Jack Humbert
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -15,23 +15,26 @@ GNU General Public License for more details.
 You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
-
-/*
- * scan matrix
- */
 #include <stdint.h>
 #include <stdbool.h>
+#if defined(__AVR__)
 #include <avr/io.h>
-#include <util/delay.h>
+#endif
+#include "wait.h"
 #include "print.h"
 #include "debug.h"
 #include "util.h"
 #include "matrix.h"
 
-#ifndef DEBOUNCE
-#   define DEBOUNCE 10
+/* Set 0 if debouncing isn't needed */
+
+#ifndef DEBOUNCING_DELAY
+#   define DEBOUNCING_DELAY 5
 #endif
-static uint8_t debouncing = DEBOUNCE;
+static uint8_t debouncing = DEBOUNCING_DELAY;
+
+static const uint8_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
+static const uint8_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
 
 /* matrix state(1:on, 0:off) */
 static matrix_row_t matrix[MATRIX_ROWS];
@@ -42,39 +45,85 @@ static matrix_row_t matrix_debouncing[MATRIX_ROWS];
     static matrix_row_t matrix_reversed_debouncing[MATRIX_COLS];
 #endif
 
+#if MATRIX_COLS > 16
+    #define SHIFTER 1UL
+#else
+    #define SHIFTER 1
+#endif
+
 static matrix_row_t read_cols(void);
 static void init_cols(void);
 static void unselect_rows(void);
 static void select_row(uint8_t row);
 
 __attribute__ ((weak))
-void * matrix_init_kb(void) {
+void matrix_init_quantum(void) {
+    matrix_init_kb();
+}
+
+__attribute__ ((weak))
+void matrix_scan_quantum(void) {
+    matrix_scan_kb();
+}
 
-};
+__attribute__ ((weak))
+void matrix_init_kb(void) {
+    matrix_init_user();
+}
+
+__attribute__ ((weak))
+void matrix_scan_kb(void) {
+    matrix_scan_user();
+}
 
 __attribute__ ((weak))
-void * matrix_scan_kb(void) {
+void matrix_init_user(void) {
+}
 
-};
+__attribute__ ((weak))
+void matrix_scan_user(void) {
+}
 
 inline
-uint8_t matrix_rows(void)
-{
+uint8_t matrix_rows(void) {
     return MATRIX_ROWS;
 }
 
 inline
-uint8_t matrix_cols(void)
-{
+uint8_t matrix_cols(void) {
     return MATRIX_COLS;
 }
 
-void matrix_init(void)
-{
+// void matrix_power_up(void) {
+// #if DIODE_DIRECTION == COL2ROW
+//     for (int8_t r = MATRIX_ROWS - 1; r >= 0; --r) {
+//         /* DDRxn */
+//         _SFR_IO8((row_pins[r] >> 4) + 1) |= _BV(row_pins[r] & 0xF);
+//         toggle_row(r);
+//     }
+//     for (int8_t c = MATRIX_COLS - 1; c >= 0; --c) {
+//         /* PORTxn */
+//         _SFR_IO8((col_pins[c] >> 4) + 2) |= _BV(col_pins[c] & 0xF);
+//     }
+// #else
+//     for (int8_t c = MATRIX_COLS - 1; c >= 0; --c) {
+//         /* DDRxn */
+//         _SFR_IO8((col_pins[c] >> 4) + 1) |= _BV(col_pins[c] & 0xF);
+//         toggle_col(c);
+//     }
+//     for (int8_t r = MATRIX_ROWS - 1; r >= 0; --r) {
+//         /* PORTxn */
+//         _SFR_IO8((row_pins[r] >> 4) + 2) |= _BV(row_pins[r] & 0xF);
+//     }
+// #endif
+// }
+
+void matrix_init(void) {
     // To use PORTF disable JTAG with writing JTD bit twice within four cycles.
-    MCUCR |= (1<<JTD);
-    MCUCR |= (1<<JTD);
-
+    #ifdef __AVR_ATmega32U4__
+        MCUCR |= _BV(JTD);
+        MCUCR |= _BV(JTD);
+    #endif
 
     // initialize row and col
     unselect_rows();
@@ -86,33 +135,30 @@ void matrix_init(void)
         matrix_debouncing[i] = 0;
     }
 
-    if (matrix_init_kb) {
-        (*matrix_init_kb)();
-    }
+    matrix_init_quantum();
 }
 
-
 uint8_t matrix_scan(void)
 {
 
 #if DIODE_DIRECTION == COL2ROW
     for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
         select_row(i);
-        _delay_us(30);  // without this wait read unstable value.
+        wait_us(30);  // without this wait read unstable value.
         matrix_row_t cols = read_cols();
         if (matrix_debouncing[i] != cols) {
             matrix_debouncing[i] = cols;
             if (debouncing) {
                 debug("bounce!: "); debug_hex(debouncing); debug("\n");
             }
-            debouncing = DEBOUNCE;
+            debouncing = DEBOUNCING_DELAY;
         }
         unselect_rows();
     }
 
     if (debouncing) {
         if (--debouncing) {
-            _delay_ms(1);
+            wait_ms(1);
         } else {
             for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
                 matrix[i] = matrix_debouncing[i];
@@ -122,21 +168,21 @@ uint8_t matrix_scan(void)
 #else
     for (uint8_t i = 0; i < MATRIX_COLS; i++) {
         select_row(i);
-        _delay_us(30);  // without this wait read unstable value.
+        wait_us(30);  // without this wait read unstable value.
         matrix_row_t rows = read_cols();
         if (matrix_reversed_debouncing[i] != rows) {
             matrix_reversed_debouncing[i] = rows;
             if (debouncing) {
                 debug("bounce!: "); debug_hex(debouncing); debug("\n");
             }
-            debouncing = DEBOUNCE;
+            debouncing = DEBOUNCING_DELAY;
         }
         unselect_rows();
     }
 
     if (debouncing) {
         if (--debouncing) {
-            _delay_ms(1);
+            wait_ms(1);
         } else {
             for (uint8_t i = 0; i < MATRIX_COLS; i++) {
                 matrix_reversed[i] = matrix_reversed_debouncing[i];
@@ -152,9 +198,7 @@ uint8_t matrix_scan(void)
     }
 #endif
 
-    if (matrix_scan_kb) {
-        (*matrix_scan_kb)();
-    }
+    matrix_scan_quantum();
 
     return 1;
 }
@@ -198,32 +242,16 @@ uint8_t matrix_key_count(void)
 
 static void init_cols(void)
 {
-    int B = 0, C = 0, D = 0, E = 0, F = 0;
-
 #if DIODE_DIRECTION == COL2ROW
     for(int x = 0; x < MATRIX_COLS; x++) {
-        int col = COLS[x];
+        int pin = col_pins[x];
 #else
     for(int x = 0; x < MATRIX_ROWS; x++) {
-        int col = ROWS[x];
+        int pin = row_pins[x];
 #endif
-        if ((col & 0xF0) == 0x20) { 
-            B |= (1<<(col & 0x0F)); 
-        } else if ((col & 0xF0) == 0x30) { 
-            C |= (1<<(col & 0x0F)); 
-        } else if ((col & 0xF0) == 0x40) { 
-            D |= (1<<(col & 0x0F)); 
-        } else if ((col & 0xF0) == 0x50) { 
-            E |= (1<<(col & 0x0F)); 
-        } else if ((col & 0xF0) == 0x60) { 
-            F |= (1<<(col & 0x0F)); 
-        } 
+        _SFR_IO8((pin >> 4) + 1) &=  ~_BV(pin & 0xF);
+        _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF);
     }
-    DDRB &= ~(B); PORTB |= (B);
-    DDRC &= ~(C); PORTC |= (C); 
-    DDRD &= ~(D); PORTD |= (D);
-    DDRE &= ~(E); PORTE |= (E);
-    DDRF &= ~(F); PORTF |= (F);
 }
 
 static matrix_row_t read_cols(void)
@@ -232,80 +260,38 @@ static matrix_row_t read_cols(void)
 
 #if DIODE_DIRECTION == COL2ROW
     for(int x = 0; x < MATRIX_COLS; x++) {     
-        int col = COLS[x];
+        int pin = col_pins[x];
 #else
     for(int x = 0; x < MATRIX_ROWS; x++) {
-        int col = ROWS[x];
+        int pin = row_pins[x];
 #endif
-
-        if ((col & 0xF0) == 0x20) { 
-            result |= (PINB&(1<<(col & 0x0F)) ? 0 : (1<<x)); 
-        } else if ((col & 0xF0) == 0x30) { 
-            result |= (PINC&(1<<(col & 0x0F)) ? 0 : (1<<x)); 
-        } else if ((col & 0xF0) == 0x40) { 
-            result |= (PIND&(1<<(col & 0x0F)) ? 0 : (1<<x)); 
-        } else if ((col & 0xF0) == 0x50) { 
-            result |= (PINE&(1<<(col & 0x0F)) ? 0 : (1<<x)); 
-        } else if ((col & 0xF0) == 0x60) { 
-            result |= (PINF&(1<<(col & 0x0F)) ? 0 : (1<<x)); 
-        } 
+        result |= (_SFR_IO8(pin >> 4) & _BV(pin & 0xF)) ? 0 : (SHIFTER << x);
     }
     return result;
 }
 
 static void unselect_rows(void)
 {
-    int B = 0, C = 0, D = 0, E = 0, F = 0;
-
 #if DIODE_DIRECTION == COL2ROW
     for(int x = 0; x < MATRIX_ROWS; x++) { 
-        int row = ROWS[x];
+        int pin = row_pins[x];
 #else
     for(int x = 0; x < MATRIX_COLS; x++) { 
-        int row = COLS[x];
+        int pin = col_pins[x];
 #endif
-        if ((row & 0xF0) == 0x20) { 
-            B |= (1<<(row & 0x0F)); 
-        } else if ((row & 0xF0) == 0x30) { 
-            C |= (1<<(row & 0x0F)); 
-        } else if ((row & 0xF0) == 0x40) { 
-            D |= (1<<(row & 0x0F)); 
-        } else if ((row & 0xF0) == 0x50) { 
-            E |= (1<<(row & 0x0F)); 
-        } else if ((row & 0xF0) == 0x60) { 
-            F |= (1<<(row & 0x0F)); 
-        } 
+        _SFR_IO8((pin >> 4) + 1) &=  ~_BV(pin & 0xF);
+        _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF);
     }
-    DDRB &= ~(B); PORTB |= (B);
-    DDRC &= ~(C); PORTC |= (C); 
-    DDRD &= ~(D); PORTD |= (D);
-    DDRE &= ~(E); PORTE |= (E);
-    DDRF &= ~(F); PORTF |= (F);
 }
 
 static void select_row(uint8_t row)
 {
 
 #if DIODE_DIRECTION == COL2ROW
-    int row_pin = ROWS[row];
+    int pin = row_pins[row];
 #else
-    int row_pin = COLS[row];
+    int pin = col_pins[row];
 #endif
-
-    if ((row_pin & 0xF0) == 0x20) { 
-        DDRB  |= (1<<(row_pin & 0x0F));
-        PORTB &= ~(1<<(row_pin & 0x0F));
-    } else if ((row_pin & 0xF0) == 0x30) { 
-        DDRC  |= (1<<(row_pin & 0x0F));
-        PORTC &= ~(1<<(row_pin & 0x0F));
-    } else if ((row_pin & 0xF0) == 0x40) { 
-        DDRD  |= (1<<(row_pin & 0x0F));
-        PORTD &= ~(1<<(row_pin & 0x0F));
-    } else if ((row_pin & 0xF0) == 0x50) { 
-        DDRE  |= (1<<(row_pin & 0x0F));
-        PORTE &= ~(1<<(row_pin & 0x0F));
-    } else if ((row_pin & 0xF0) == 0x60) { 
-        DDRF  |= (1<<(row_pin & 0x0F));
-        PORTF &= ~(1<<(row_pin & 0x0F));
-    }  
-}
\ No newline at end of file
+    _SFR_IO8((pin >> 4) + 1) |=  _BV(pin & 0xF);
+    _SFR_IO8((pin >> 4) + 2) &= ~_BV(pin & 0xF);
+}
diff --git a/quantum/process_keycode/process_chording.c b/quantum/process_keycode/process_chording.c
new file mode 100644
index 000000000..d7814629f
--- /dev/null
+++ b/quantum/process_keycode/process_chording.c
@@ -0,0 +1,60 @@
+#include "process_chording.h"
+
+bool keys_chord(uint8_t keys[]) {
+  uint8_t keys_size = sizeof(keys)/sizeof(keys[0]);
+  bool pass = true;
+  uint8_t in = 0;
+  for (uint8_t i = 0; i < chord_key_count; i++) {
+    bool found = false;
+    for (uint8_t j = 0; j < keys_size; j++) {
+      if (chord_keys[i] == (keys[j] & 0xFF)) {
+        in++; // detects key in chord
+        found = true;
+        break;
+      }
+    }
+    if (found)
+      continue;
+    if (chord_keys[i] != 0)  {
+      pass = false; // makes sure rest are blank
+    }
+  }
+  return (pass && (in == keys_size));
+}
+
+bool process_chording(uint16_t keycode, keyrecord_t *record) {
+  if (keycode >= QK_CHORDING && keycode <= QK_CHORDING_MAX) {
+    if (record->event.pressed) {
+      if (!chording) {
+        chording = true;
+        for (uint8_t i = 0; i < CHORDING_MAX; i++)
+          chord_keys[i] = 0;
+        chord_key_count = 0;
+        chord_key_down = 0;
+      }
+      chord_keys[chord_key_count] = (keycode & 0xFF);
+      chord_key_count++;
+      chord_key_down++;
+      return false;
+    } else {
+      if (chording) {
+        chord_key_down--;
+        if (chord_key_down == 0) {
+          chording = false;
+          // Chord Dictionary
+          if (keys_chord((uint8_t[]){KC_ENTER, KC_SPACE})) {
+            register_code(KC_A);
+            unregister_code(KC_A);
+            return false;
+          }
+          for (uint8_t i = 0; i < chord_key_count; i++) {
+            register_code(chord_keys[i]);
+            unregister_code(chord_keys[i]);
+            return false;
+          }
+        }
+      }
+    }
+  }
+  return true;
+}
\ No newline at end of file
diff --git a/quantum/process_keycode/process_chording.h b/quantum/process_keycode/process_chording.h
new file mode 100644
index 000000000..49c97db3b
--- /dev/null
+++ b/quantum/process_keycode/process_chording.h
@@ -0,0 +1,16 @@
+#ifndef PROCESS_CHORDING_H
+#define PROCESS_CHORDING_H
+
+#include "quantum.h"
+
+// Chording stuff
+#define CHORDING_MAX 4
+bool chording = false;
+
+uint8_t chord_keys[CHORDING_MAX] = {0};
+uint8_t chord_key_count = 0;
+uint8_t chord_key_down = 0;
+
+bool process_chording(uint16_t keycode, keyrecord_t *record);
+
+#endif
\ No newline at end of file
diff --git a/quantum/process_keycode/process_leader.c b/quantum/process_keycode/process_leader.c
new file mode 100644
index 000000000..e53d221e7
--- /dev/null
+++ b/quantum/process_keycode/process_leader.c
@@ -0,0 +1,38 @@
+#include "process_leader.h"
+
+__attribute__ ((weak))
+void leader_start(void) {}
+
+__attribute__ ((weak))
+void leader_end(void) {}
+
+// Leader key stuff
+bool leading = false;
+uint16_t leader_time = 0;
+
+uint16_t leader_sequence[5] = {0, 0, 0, 0, 0};
+uint8_t leader_sequence_size = 0;
+
+bool process_leader(uint16_t keycode, keyrecord_t *record) {
+  // Leader key set-up
+  if (record->event.pressed) {
+    if (!leading && keycode == KC_LEAD) {
+      leader_start();
+      leading = true;
+      leader_time = timer_read();
+      leader_sequence_size = 0;
+      leader_sequence[0] = 0;
+      leader_sequence[1] = 0;
+      leader_sequence[2] = 0;
+      leader_sequence[3] = 0;
+      leader_sequence[4] = 0;
+      return false;
+    }
+    if (leading && timer_elapsed(leader_time) < LEADER_TIMEOUT) {
+      leader_sequence[leader_sequence_size] = keycode;
+      leader_sequence_size++;
+      return false;
+    }
+  }
+  return true;
+}
\ No newline at end of file
diff --git a/quantum/process_keycode/process_leader.h b/quantum/process_keycode/process_leader.h
new file mode 100644
index 000000000..c83db8abb
--- /dev/null
+++ b/quantum/process_keycode/process_leader.h
@@ -0,0 +1,23 @@
+#ifndef PROCESS_LEADER_H
+#define PROCESS_LEADER_H
+
+#include "quantum.h"
+
+bool process_leader(uint16_t keycode, keyrecord_t *record);
+
+void leader_start(void);
+void leader_end(void);
+
+#ifndef LEADER_TIMEOUT
+  #define LEADER_TIMEOUT 200
+#endif
+#define SEQ_ONE_KEY(key) if (leader_sequence[0] == (key) && leader_sequence[1] == 0 && leader_sequence[2] == 0 && leader_sequence[3] == 0 && leader_sequence[4] == 0)
+#define SEQ_TWO_KEYS(key1, key2) if (leader_sequence[0] == (key1) && leader_sequence[1] == (key2) && leader_sequence[2] == 0 && leader_sequence[3] == 0 && leader_sequence[4] == 0)
+#define SEQ_THREE_KEYS(key1, key2, key3) if (leader_sequence[0] == (key1) && leader_sequence[1] == (key2) && leader_sequence[2] == (key3) && leader_sequence[3] == 0 && leader_sequence[4] == 0)
+#define SEQ_FOUR_KEYS(key1, key2, key3, key4) if (leader_sequence[0] == (key1) && leader_sequence[1] == (key2) && leader_sequence[2] == (key3) && leader_sequence[3] == (key4) && leader_sequence[4] == 0)
+#define SEQ_FIVE_KEYS(key1, key2, key3, key4, key5) if (leader_sequence[0] == (key1) && leader_sequence[1] == (key2) && leader_sequence[2] == (key3) && leader_sequence[3] == (key4) && leader_sequence[4] == (key5))
+
+#define LEADER_EXTERNS() extern bool leading; extern uint16_t leader_time; extern uint16_t leader_sequence[5]; extern uint8_t leader_sequence_size
+#define LEADER_DICTIONARY() if (leading && timer_elapsed(leader_time) > LEADER_TIMEOUT)
+
+#endif
\ No newline at end of file
diff --git a/quantum/process_keycode/process_midi.c b/quantum/process_keycode/process_midi.c
new file mode 100644
index 000000000..577dad43a
--- /dev/null
+++ b/quantum/process_keycode/process_midi.c
@@ -0,0 +1,68 @@
+#include "process_midi.h"
+
+bool midi_activated = false;
+uint8_t midi_starting_note = 0x0C;
+int midi_offset = 7;
+
+bool process_midi(uint16_t keycode, keyrecord_t *record) {
+    if (keycode == MI_ON && record->event.pressed) {
+      midi_activated = true;
+#ifdef AUDIO_ENABLE
+      music_scale_user();
+#endif
+      return false;
+    }
+
+    if (keycode == MI_OFF && record->event.pressed) {
+      midi_activated = false;
+      midi_send_cc(&midi_device, 0, 0x7B, 0);
+      return false;
+    }
+
+    if (midi_activated) {
+      if (record->event.key.col == (MATRIX_COLS - 1) && record->event.key.row == (MATRIX_ROWS - 1)) {
+          if (record->event.pressed) {
+              midi_starting_note++; // Change key
+              midi_send_cc(&midi_device, 0, 0x7B, 0);
+          }
+          return false;
+      }
+      if (record->event.key.col == (MATRIX_COLS - 2) && record->event.key.row == (MATRIX_ROWS - 1)) {
+          if (record->event.pressed) {
+              midi_starting_note--; // Change key
+              midi_send_cc(&midi_device, 0, 0x7B, 0);
+          }
+          return false;
+      }
+      if (record->event.key.col == (MATRIX_COLS - 3) && record->event.key.row == (MATRIX_ROWS - 1) && record->event.pressed) {
+          midi_offset++; // Change scale
+          midi_send_cc(&midi_device, 0, 0x7B, 0);
+          return false;
+      }
+      if (record->event.key.col == (MATRIX_COLS - 4) && record->event.key.row == (MATRIX_ROWS - 1) && record->event.pressed) {
+          midi_offset--; // Change scale
+          midi_send_cc(&midi_device, 0, 0x7B, 0);
+          return false;
+      }
+      // basic
+      // uint8_t note = (midi_starting_note + SCALE[record->event.key.col + midi_offset])+12*(MATRIX_ROWS - record->event.key.row);
+      // advanced
+      // uint8_t note = (midi_starting_note + record->event.key.col + midi_offset)+12*(MATRIX_ROWS - record->event.key.row);
+      // guitar
+      uint8_t note = (midi_starting_note + record->event.key.col + midi_offset)+5*(MATRIX_ROWS - record->event.key.row);
+      // violin
+      // uint8_t note = (midi_starting_note + record->event.key.col + midi_offset)+7*(MATRIX_ROWS - record->event.key.row);
+
+      if (record->event.pressed) {
+        // midi_send_noteon(&midi_device, record->event.key.row, midi_starting_note + SCALE[record->event.key.col], 127);
+        midi_send_noteon(&midi_device, 0, note, 127);
+      } else {
+        // midi_send_noteoff(&midi_device, record->event.key.row, midi_starting_note + SCALE[record->event.key.col], 127);
+        midi_send_noteoff(&midi_device, 0, note, 127);
+      }
+
+      if (keycode < 0xFF) // ignores all normal keycodes, but lets RAISE, LOWER, etc through
+        return false;
+    }
+  return true;
+}
diff --git a/quantum/keymap_midi.h b/quantum/process_keycode/process_midi.h
index a89420ce2..acd4fc1b1 100644
--- a/quantum/keymap_midi.h
+++ b/quantum/process_keycode/process_midi.h
@@ -1,35 +1,20 @@
-/*
-Copyright 2015 Jack Humbert <jack.humb@gmail.com>
+#ifndef PROCESS_MIDI_H
+#define PROCESS_MIDI_H
 
-This program is free software: you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation, either version 2 of the License, or
-(at your option) any later version.
+#include "quantum.h"
 
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
+bool process_midi(uint16_t keycode, keyrecord_t *record);
 
-You should have received a copy of the GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-#ifndef KEYMAP_MIDI_H
-#define KEYMAP_MIDI_H
-
-#include <lufa.h>
-
-#define MIDI 0x6000
+#define MIDI(n) ((n) | 0x6000)
 #define MIDI12 0x6000, 0x6000, 0x6000, 0x6000, 0x6000, 0x6000, 0x6000, 0x6000, 0x6000, 0x6000, 0x6000, 0x6000
 
 #define CHNL(note, channel) (note + (channel << 8))
 
-#define SCALE (int []){ 0 + (12*0), 2 + (12*0), 4 + (12*0), 5 + (12*0), 7 + (12*0), 9 + (12*0), 11 + (12*0), \
-                                                0 + (12*1), 2 + (12*1), 4 + (12*1), 5 + (12*1), 7 + (12*1), 9 + (12*1), 11 + (12*1), \
-                                                0 + (12*2), 2 + (12*2), 4 + (12*2), 5 + (12*2), 7 + (12*2), 9 + (12*2), 11 + (12*2), \
-                                                0 + (12*3), 2 + (12*3), 4 + (12*3), 5 + (12*3), 7 + (12*3), 9 + (12*3), 11 + (12*3), \
-                                                0 + (12*4), 2 + (12*4), 4 + (12*4), 5 + (12*4), 7 + (12*4), 9 + (12*4), 11 + (12*4), }
+#define SCALE (int8_t []){ 0 + (12*0), 2 + (12*0), 4 + (12*0), 5 + (12*0), 7 + (12*0), 9 + (12*0), 11 + (12*0), \
+                           0 + (12*1), 2 + (12*1), 4 + (12*1), 5 + (12*1), 7 + (12*1), 9 + (12*1), 11 + (12*1), \
+                           0 + (12*2), 2 + (12*2), 4 + (12*2), 5 + (12*2), 7 + (12*2), 9 + (12*2), 11 + (12*2), \
+                           0 + (12*3), 2 + (12*3), 4 + (12*3), 5 + (12*3), 7 + (12*3), 9 + (12*3), 11 + (12*3), \
+                           0 + (12*4), 2 + (12*4), 4 + (12*4), 5 + (12*4), 7 + (12*4), 9 + (12*4), 11 + (12*4), }
 
 #define N_CN1  (0x600C + (12 * -1) + 0 )
 #define N_CN1S (0x600C + (12 * -1) + 1 )
diff --git a/quantum/process_keycode/process_music.c b/quantum/process_keycode/process_music.c
new file mode 100644
index 000000000..2d52e47a7
--- /dev/null
+++ b/quantum/process_keycode/process_music.c
@@ -0,0 +1,176 @@
+#include "process_music.h"
+
+bool music_activated = false;
+uint8_t starting_note = 0x0C;
+int offset = 7;
+
+// music sequencer
+static bool music_sequence_recording = false;
+static bool music_sequence_recorded = false;
+static bool music_sequence_playing = false;
+static float music_sequence[16] = {0};
+static uint8_t music_sequence_count = 0;
+static uint8_t music_sequence_position = 0;
+
+static uint16_t music_sequence_timer = 0;
+static uint16_t music_sequence_interval = 100;
+
+bool process_music(uint16_t keycode, keyrecord_t *record) {
+
+    if (keycode == AU_ON && record->event.pressed) {
+      audio_on();
+      return false;
+    }
+
+    if (keycode == AU_OFF && record->event.pressed) {
+      audio_off();
+      return false;
+    }
+
+    if (keycode == AU_TOG && record->event.pressed) {
+        if (is_audio_on())
+        {
+            audio_off();
+        }
+        else
+        {
+            audio_on();
+        }
+      return false;
+    }
+
+    if (keycode == MU_ON && record->event.pressed) {
+        music_on();
+        return false;
+    }
+
+    if (keycode == MU_OFF && record->event.pressed) {
+        music_off();
+        return false;
+    }
+
+    if (keycode == MU_TOG && record->event.pressed) {
+        if (music_activated)
+        {
+            music_off();
+        }
+        else
+        {
+            music_on();
+        }
+        return false;
+    }
+
+    if (keycode == MUV_IN && record->event.pressed) {
+        voice_iterate();
+        music_scale_user();
+        return false;
+    }
+
+    if (keycode == MUV_DE && record->event.pressed) {
+        voice_deiterate();
+        music_scale_user();
+        return false;
+    }
+
+    if (music_activated) {
+
+      if (keycode == KC_LCTL && record->event.pressed) { // Start recording
+        stop_all_notes();
+        music_sequence_recording = true;
+        music_sequence_recorded = false;
+        music_sequence_playing = false;
+        music_sequence_count = 0;
+        return false;
+      }
+
+      if (keycode == KC_LALT && record->event.pressed) { // Stop recording/playing
+        stop_all_notes();
+        if (music_sequence_recording) { // was recording
+          music_sequence_recorded = true;
+        }
+        music_sequence_recording = false;
+        music_sequence_playing = false;
+        return false;
+      }
+
+      if (keycode == KC_LGUI && record->event.pressed && music_sequence_recorded) { // Start playing
+        stop_all_notes();
+        music_sequence_recording = false;
+        music_sequence_playing = true;
+        music_sequence_position = 0;
+        music_sequence_timer = 0;
+        return false;
+      }
+
+      if (keycode == KC_UP) {
+        if (record->event.pressed)
+            music_sequence_interval-=10;
+        return false;
+      }
+
+      if (keycode == KC_DOWN) {
+        if (record->event.pressed)
+            music_sequence_interval+=10;
+        return false;
+      }
+
+      float freq = ((float)220.0)*pow(2.0, -5.0)*pow(2.0,(starting_note + SCALE[record->event.key.col + offset])/12.0+(MATRIX_ROWS - record->event.key.row));
+      if (record->event.pressed) {
+        play_note(freq, 0xF);
+        if (music_sequence_recording) {
+          music_sequence[music_sequence_count] = freq;
+          music_sequence_count++;
+        }
+      } else {
+        stop_note(freq);
+      }
+
+      if (keycode < 0xFF) // ignores all normal keycodes, but lets RAISE, LOWER, etc through
+        return false;
+    }
+  return true;
+}
+
+bool is_music_on(void) {
+    return (music_activated != 0);
+}
+
+void music_toggle(void) {
+    if (!music_activated) {
+        music_on();
+    } else {
+        music_off();
+    }
+}
+
+void music_on(void) {
+    music_activated = 1;
+    music_on_user();
+}
+
+void music_off(void) {
+    music_activated = 0;
+    stop_all_notes();
+}
+
+
+__attribute__ ((weak))
+void music_on_user() {}
+
+__attribute__ ((weak))
+void audio_on_user() {}
+
+__attribute__ ((weak))
+void music_scale_user() {}
+
+void matrix_scan_music(void) {
+  if (music_sequence_playing) {
+    if ((music_sequence_timer == 0) || (timer_elapsed(music_sequence_timer) > music_sequence_interval)) {
+      music_sequence_timer = timer_read();
+      stop_note(music_sequence[(music_sequence_position - 1 < 0)?(music_sequence_position - 1 + music_sequence_count):(music_sequence_position - 1)]);
+      play_note(music_sequence[music_sequence_position], 0xF);
+      music_sequence_position = (music_sequence_position + 1) % music_sequence_count;
+    }
+  }
+}
diff --git a/quantum/process_keycode/process_music.h b/quantum/process_keycode/process_music.h
new file mode 100644
index 000000000..318b3e387
--- /dev/null
+++ b/quantum/process_keycode/process_music.h
@@ -0,0 +1,27 @@
+#ifndef PROCESS_MUSIC_H
+#define PROCESS_MUSIC_H
+
+#include "quantum.h"
+
+bool process_music(uint16_t keycode, keyrecord_t *record);
+
+bool is_music_on(void);
+void music_toggle(void);
+void music_on(void);
+void music_off(void);
+
+void audio_on_user(void);
+void music_on_user(void);
+void music_scale_user(void);
+
+void matrix_scan_music(void);
+
+#ifndef SCALE
+#define SCALE (int8_t []){ 0 + (12*0), 2 + (12*0), 4 + (12*0), 5 + (12*0), 7 + (12*0), 9 + (12*0), 11 + (12*0), \
+                           0 + (12*1), 2 + (12*1), 4 + (12*1), 5 + (12*1), 7 + (12*1), 9 + (12*1), 11 + (12*1), \
+                           0 + (12*2), 2 + (12*2), 4 + (12*2), 5 + (12*2), 7 + (12*2), 9 + (12*2), 11 + (12*2), \
+                           0 + (12*3), 2 + (12*3), 4 + (12*3), 5 + (12*3), 7 + (12*3), 9 + (12*3), 11 + (12*3), \
+                           0 + (12*4), 2 + (12*4), 4 + (12*4), 5 + (12*4), 7 + (12*4), 9 + (12*4), 11 + (12*4), }
+#endif
+
+#endif
\ No newline at end of file
diff --git a/quantum/process_keycode/process_tap_dance.c b/quantum/process_keycode/process_tap_dance.c
new file mode 100644
index 000000000..6ae362c4c
--- /dev/null
+++ b/quantum/process_keycode/process_tap_dance.c
@@ -0,0 +1,136 @@
+#include "quantum.h"
+#include "action_tapping.h"
+
+static uint16_t last_td;
+static int8_t highest_td = -1;
+
+void qk_tap_dance_pair_finished (qk_tap_dance_state_t *state, void *user_data) {
+  qk_tap_dance_pair_t *pair = (qk_tap_dance_pair_t *)user_data;
+
+  if (state->count == 1) {
+    register_code16 (pair->kc1);
+  } else if (state->count == 2) {
+    register_code16 (pair->kc2);
+  }
+}
+
+void qk_tap_dance_pair_reset (qk_tap_dance_state_t *state, void *user_data) {
+  qk_tap_dance_pair_t *pair = (qk_tap_dance_pair_t *)user_data;
+
+  if (state->count == 1) {
+    unregister_code16 (pair->kc1);
+  } else if (state->count == 2) {
+    unregister_code16 (pair->kc2);
+  }
+}
+
+static inline void _process_tap_dance_action_fn (qk_tap_dance_state_t *state,
+                                                 void *user_data,
+                                                 qk_tap_dance_user_fn_t fn)
+{
+  if (fn) {
+    fn(state, user_data);
+  }
+}
+
+static inline void process_tap_dance_action_on_each_tap (qk_tap_dance_action_t *action)
+{
+  _process_tap_dance_action_fn (&action->state, action->user_data, action->fn.on_each_tap);
+}
+
+static inline void process_tap_dance_action_on_dance_finished (qk_tap_dance_action_t *action)
+{
+  if (action->state.finished)
+    return;
+  action->state.finished = true;
+  _process_tap_dance_action_fn (&action->state, action->user_data, action->fn.on_dance_finished);
+}
+
+static inline void process_tap_dance_action_on_reset (qk_tap_dance_action_t *action)
+{
+  _process_tap_dance_action_fn (&action->state, action->user_data, action->fn.on_reset);
+}
+
+bool process_tap_dance(uint16_t keycode, keyrecord_t *record) {
+  uint16_t idx = keycode - QK_TAP_DANCE;
+  qk_tap_dance_action_t *action;
+
+  if (last_td && last_td != keycode) {
+    (&tap_dance_actions[last_td - QK_TAP_DANCE])->state.interrupted = true;
+  }
+
+  switch(keycode) {
+  case QK_TAP_DANCE ... QK_TAP_DANCE_MAX:
+    if ((int16_t)idx > highest_td)
+      highest_td = idx;
+    action = &tap_dance_actions[idx];
+
+    action->state.pressed = record->event.pressed;
+    if (record->event.pressed) {
+      action->state.keycode = keycode;
+      action->state.count++;
+      action->state.timer = timer_read();
+      process_tap_dance_action_on_each_tap (action);
+
+      if (last_td && last_td != keycode) {
+        qk_tap_dance_action_t *paction = &tap_dance_actions[last_td - QK_TAP_DANCE];
+        paction->state.interrupted = true;
+        process_tap_dance_action_on_dance_finished (paction);
+        reset_tap_dance (&paction->state);
+      }
+
+      last_td = keycode;
+    }
+
+    break;
+
+  default:
+    if (!record->event.pressed)
+      return true;
+
+    if (highest_td == -1)
+      return true;
+
+    for (int i = 0; i <= highest_td; i++) {
+      action = &tap_dance_actions[i];
+      if (action->state.count == 0)
+        continue;
+      action->state.interrupted = true;
+      process_tap_dance_action_on_dance_finished (action);
+      reset_tap_dance (&action->state);
+    }
+    break;
+  }
+
+  return true;
+}
+
+void matrix_scan_tap_dance () {
+  if (highest_td == -1)
+    return;
+
+  for (int i = 0; i <= highest_td; i++) {
+    qk_tap_dance_action_t *action = &tap_dance_actions[i];
+
+    if (action->state.count && timer_elapsed (action->state.timer) > TAPPING_TERM) {
+      process_tap_dance_action_on_dance_finished (action);
+      reset_tap_dance (&action->state);
+    }
+  }
+}
+
+void reset_tap_dance (qk_tap_dance_state_t *state) {
+  qk_tap_dance_action_t *action;
+
+  if (state->pressed)
+    return;
+
+  action = &tap_dance_actions[state->keycode - QK_TAP_DANCE];
+
+  process_tap_dance_action_on_reset (action);
+
+  state->count = 0;
+  state->interrupted = false;
+  state->finished = false;
+  last_td = 0;
+}
diff --git a/quantum/process_keycode/process_tap_dance.h b/quantum/process_keycode/process_tap_dance.h
new file mode 100644
index 000000000..f753cbba6
--- /dev/null
+++ b/quantum/process_keycode/process_tap_dance.h
@@ -0,0 +1,72 @@
+#ifndef PROCESS_TAP_DANCE_H
+#define PROCESS_TAP_DANCE_H
+
+#ifdef TAP_DANCE_ENABLE
+
+#include <stdbool.h>
+#include <inttypes.h>
+
+typedef struct
+{
+  uint8_t count;
+  uint16_t keycode;
+  uint16_t timer;
+  bool interrupted;
+  bool pressed;
+  bool finished;
+} qk_tap_dance_state_t;
+
+#define TD(n) (QK_TAP_DANCE + n)
+
+typedef void (*qk_tap_dance_user_fn_t) (qk_tap_dance_state_t *state, void *user_data);
+
+typedef struct
+{
+  struct {
+    qk_tap_dance_user_fn_t on_each_tap;
+    qk_tap_dance_user_fn_t on_dance_finished;
+    qk_tap_dance_user_fn_t on_reset;
+  } fn;
+  qk_tap_dance_state_t state;
+  void *user_data;
+} qk_tap_dance_action_t;
+
+typedef struct
+{
+  uint16_t kc1;
+  uint16_t kc2;
+} qk_tap_dance_pair_t;
+
+#define ACTION_TAP_DANCE_DOUBLE(kc1, kc2) { \
+    .fn = { NULL, qk_tap_dance_pair_finished, qk_tap_dance_pair_reset }, \
+    .user_data = (void *)&((qk_tap_dance_pair_t) { kc1, kc2 }),  \
+  }
+
+#define ACTION_TAP_DANCE_FN(user_fn) {  \
+    .fn = { NULL, user_fn, NULL }, \
+    .user_data = NULL, \
+  }
+
+#define ACTION_TAP_DANCE_FN_ADVANCED(user_fn_on_each_tap, user_fn_on_dance_finished, user_fn_on_dance_reset) { \
+    .fn = { user_fn_on_each_tap, user_fn_on_dance_finished, user_fn_on_dance_reset }, \
+    .user_data = NULL, \
+  }
+
+extern qk_tap_dance_action_t tap_dance_actions[];
+
+/* To be used internally */
+
+bool process_tap_dance(uint16_t keycode, keyrecord_t *record);
+void matrix_scan_tap_dance (void);
+void reset_tap_dance (qk_tap_dance_state_t *state);
+
+void qk_tap_dance_pair_finished (qk_tap_dance_state_t *state, void *user_data);
+void qk_tap_dance_pair_reset (qk_tap_dance_state_t *state, void *user_data);
+
+#else
+
+#define TD(n) KC_NO
+
+#endif
+
+#endif
diff --git a/quantum/process_keycode/process_unicode.c b/quantum/process_keycode/process_unicode.c
new file mode 100644
index 000000000..cd3a610b4
--- /dev/null
+++ b/quantum/process_keycode/process_unicode.c
@@ -0,0 +1,264 @@
+#include "process_unicode.h"
+
+static uint8_t input_mode;
+
+__attribute__((weak))
+uint16_t hex_to_keycode(uint8_t hex)
+{
+  if (hex == 0x0) {
+    return KC_0;
+  } else if (hex < 0xA) {
+    return KC_1 + (hex - 0x1);
+  } else {
+    return KC_A + (hex - 0xA);
+  }
+}
+
+void set_unicode_input_mode(uint8_t os_target)
+{
+  input_mode = os_target;
+}
+
+uint8_t get_unicode_input_mode(void) {
+  return input_mode;
+}
+
+__attribute__((weak))
+void unicode_input_start (void) {
+  switch(input_mode) {
+  case UC_OSX:
+    register_code(KC_LALT);
+    break;
+  case UC_LNX:
+    register_code(KC_LCTL);
+    register_code(KC_LSFT);
+    register_code(KC_U);
+    unregister_code(KC_U);
+    unregister_code(KC_LSFT);
+    unregister_code(KC_LCTL);
+    break;
+  case UC_WIN:
+    register_code(KC_LALT);
+    register_code(KC_PPLS);
+    unregister_code(KC_PPLS);
+    break;
+  case UC_WINC:
+    register_code(KC_RALT);
+    unregister_code(KC_RALT);
+    register_code(KC_U);
+    unregister_code(KC_U);
+  }
+  wait_ms(UNICODE_TYPE_DELAY);
+}
+
+__attribute__((weak))
+void unicode_input_finish (void) {
+  switch(input_mode) {
+  case UC_OSX:
+  case UC_WIN:
+    unregister_code(KC_LALT);
+    break;
+  case UC_LNX:
+    register_code(KC_SPC);
+    unregister_code(KC_SPC);
+    break;
+  }
+}
+
+void register_hex(uint16_t hex) {
+  for(int i = 3; i >= 0; i--) {
+    uint8_t digit = ((hex >> (i*4)) & 0xF);
+    register_code(hex_to_keycode(digit));
+    unregister_code(hex_to_keycode(digit));
+  }
+}
+
+bool process_unicode(uint16_t keycode, keyrecord_t *record) {
+  if (keycode > QK_UNICODE && record->event.pressed) {
+    uint16_t unicode = keycode & 0x7FFF;
+    unicode_input_start();
+    register_hex(unicode);
+    unicode_input_finish();
+  }
+  return true;
+}
+
+#ifdef UNICODEMAP_ENABLE
+__attribute__((weak))
+const uint32_t PROGMEM unicode_map[] = {
+};
+
+void register_hex32(uint32_t hex) {
+  uint8_t onzerostart = 1;
+  for(int i = 7; i >= 0; i--) {
+    if (i <= 3) {
+      onzerostart = 0;
+    }
+    uint8_t digit = ((hex >> (i*4)) & 0xF);
+    if (digit == 0) {
+      if (onzerostart == 0) {
+        register_code(hex_to_keycode(digit));
+        unregister_code(hex_to_keycode(digit));
+      }
+    } else {
+      register_code(hex_to_keycode(digit));
+      unregister_code(hex_to_keycode(digit));
+      onzerostart = 0;
+    }
+  }
+}
+
+__attribute__((weak))
+void unicode_map_input_error() {}
+
+bool process_unicode_map(uint16_t keycode, keyrecord_t *record) {
+  if ((keycode & QK_UNICODE_MAP) == QK_UNICODE_MAP && record->event.pressed) {
+    const uint32_t* map = unicode_map;
+    uint16_t index = keycode & 0x7FF;
+    uint32_t code = pgm_read_dword_far(&map[index]);
+    if ((code > 0xFFFF && input_mode == UC_OSX) || (code > 0xFFFFF && input_mode == UC_LNX)) {
+      // when character is out of range supported by the OS
+      unicode_map_input_error();
+    } else {
+      unicode_input_start();
+      register_hex32(code);
+      unicode_input_finish();
+    }
+  }
+  return true;
+}
+#endif
+
+#ifdef UCIS_ENABLE
+qk_ucis_state_t qk_ucis_state;
+
+void qk_ucis_start(void) {
+  qk_ucis_state.count = 0;
+  qk_ucis_state.in_progress = true;
+
+  qk_ucis_start_user();
+}
+
+__attribute__((weak))
+void qk_ucis_start_user(void) {
+  unicode_input_start();
+  register_hex(0x2328);
+  unicode_input_finish();
+}
+
+static bool is_uni_seq(char *seq) {
+  uint8_t i;
+
+  for (i = 0; seq[i]; i++) {
+    uint16_t code;
+    if (('1' <= seq[i]) && (seq[i] <= '0'))
+      code = seq[i] - '1' + KC_1;
+    else
+      code = seq[i] - 'a' + KC_A;
+
+    if (i > qk_ucis_state.count || qk_ucis_state.codes[i] != code)
+      return false;
+  }
+
+  return (qk_ucis_state.codes[i] == KC_ENT ||
+          qk_ucis_state.codes[i] == KC_SPC);
+}
+
+__attribute__((weak))
+void qk_ucis_symbol_fallback (void) {
+  for (uint8_t i = 0; i < qk_ucis_state.count - 1; i++) {
+    uint8_t code = qk_ucis_state.codes[i];
+    register_code(code);
+    unregister_code(code);
+    wait_ms(UNICODE_TYPE_DELAY);
+  }
+}
+
+void register_ucis(const char *hex) {
+  for(int i = 0; hex[i]; i++) {
+    uint8_t kc = 0;
+    char c = hex[i];
+
+    switch (c) {
+    case '0':
+      kc = KC_0;
+      break;
+    case '1' ... '9':
+      kc = c - '1' + KC_1;
+      break;
+    case 'a' ... 'f':
+      kc = c - 'a' + KC_A;
+      break;
+    case 'A' ... 'F':
+      kc = c - 'A' + KC_A;
+      break;
+    }
+
+    if (kc) {
+      register_code (kc);
+      unregister_code (kc);
+      wait_ms (UNICODE_TYPE_DELAY);
+    }
+  }
+}
+
+bool process_ucis (uint16_t keycode, keyrecord_t *record) {
+  uint8_t i;
+
+  if (!qk_ucis_state.in_progress)
+    return true;
+
+  if (qk_ucis_state.count >= UCIS_MAX_SYMBOL_LENGTH &&
+      !(keycode == KC_BSPC || keycode == KC_ESC || keycode == KC_SPC || keycode == KC_ENT)) {
+    return false;
+  }
+
+  if (!record->event.pressed)
+    return true;
+
+  qk_ucis_state.codes[qk_ucis_state.count] = keycode;
+  qk_ucis_state.count++;
+
+  if (keycode == KC_BSPC) {
+    if (qk_ucis_state.count >= 2) {
+      qk_ucis_state.count -= 2;
+      return true;
+    } else {
+      qk_ucis_state.count--;
+      return false;
+    }
+  }
+
+  if (keycode == KC_ENT || keycode == KC_SPC || keycode == KC_ESC) {
+    bool symbol_found = false;
+
+    for (i = qk_ucis_state.count; i > 0; i--) {
+      register_code (KC_BSPC);
+      unregister_code (KC_BSPC);
+      wait_ms(UNICODE_TYPE_DELAY);
+    }
+
+    if (keycode == KC_ESC) {
+      qk_ucis_state.in_progress = false;
+      return false;
+    }
+
+    unicode_input_start();
+    for (i = 0; ucis_symbol_table[i].symbol; i++) {
+      if (is_uni_seq (ucis_symbol_table[i].symbol)) {
+        symbol_found = true;
+        register_ucis(ucis_symbol_table[i].code + 2);
+        break;
+      }
+    }
+    if (!symbol_found) {
+      qk_ucis_symbol_fallback();
+    }
+    unicode_input_finish();
+
+    qk_ucis_state.in_progress = false;
+    return false;
+  }
+  return true;
+}
+#endif
diff --git a/quantum/process_keycode/process_unicode.h b/quantum/process_keycode/process_unicode.h
new file mode 100644
index 000000000..065eeb5f6
--- /dev/null
+++ b/quantum/process_keycode/process_unicode.h
@@ -0,0 +1,166 @@
+#ifndef PROCESS_UNICODE_H
+#define PROCESS_UNICODE_H
+
+#include "quantum.h"
+
+#define UC_OSX 0  // Mac OS X
+#define UC_LNX 1  // Linux
+#define UC_WIN 2  // Windows 'HexNumpad'
+#define UC_BSD 3  // BSD (not implemented)
+#define UC_WINC 4 // WinCompose https://github.com/samhocevar/wincompose
+
+#ifndef UNICODE_TYPE_DELAY
+#define UNICODE_TYPE_DELAY 10
+#endif
+
+void set_unicode_input_mode(uint8_t os_target);
+uint8_t get_unicode_input_mode(void);
+void unicode_input_start(void);
+void unicode_input_finish(void);
+void register_hex(uint16_t hex);
+
+bool process_unicode(uint16_t keycode, keyrecord_t *record);
+
+#ifdef UNICODEMAP_ENABLE
+bool process_unicode_map(uint16_t keycode, keyrecord_t *record);
+#endif
+
+#ifdef UCIS_ENABLE
+#ifndef UCIS_MAX_SYMBOL_LENGTH
+#define UCIS_MAX_SYMBOL_LENGTH 32
+#endif
+
+typedef struct {
+  char *symbol;
+  char *code;
+} qk_ucis_symbol_t;
+
+typedef struct {
+  uint8_t count;
+  uint16_t codes[UCIS_MAX_SYMBOL_LENGTH];
+  bool in_progress:1;
+} qk_ucis_state_t;
+
+extern qk_ucis_state_t qk_ucis_state;
+
+#define UCIS_TABLE(...) {__VA_ARGS__, {NULL, NULL}}
+#define UCIS_SYM(name, code) {name, #code}
+
+extern const qk_ucis_symbol_t ucis_symbol_table[];
+
+void qk_ucis_start(void);
+void qk_ucis_start_user(void);
+void qk_ucis_symbol_fallback (void);
+void register_ucis(const char *hex);
+bool process_ucis (uint16_t keycode, keyrecord_t *record);
+
+#endif
+
+#define UC_BSPC UC(0x0008)
+
+#define UC_SPC  UC(0x0020)
+
+#define UC_EXLM UC(0x0021)
+#define UC_DQUT UC(0x0022)
+#define UC_HASH UC(0x0023)
+#define UC_DLR  UC(0x0024)
+#define UC_PERC UC(0x0025)
+#define UC_AMPR UC(0x0026)
+#define UC_QUOT UC(0x0027)
+#define UC_LPRN UC(0x0028)
+#define UC_RPRN UC(0x0029)
+#define UC_ASTR UC(0x002A)
+#define UC_PLUS UC(0x002B)
+#define UC_COMM UC(0x002C)
+#define UC_DASH UC(0x002D)
+#define UC_DOT  UC(0x002E)
+#define UC_SLSH UC(0x002F)
+
+#define UC_0    UC(0x0030)
+#define UC_1    UC(0x0031)
+#define UC_2    UC(0x0032)
+#define UC_3    UC(0x0033)
+#define UC_4    UC(0x0034)
+#define UC_5    UC(0x0035)
+#define UC_6    UC(0x0036)
+#define UC_7    UC(0x0037)
+#define UC_8    UC(0x0038)
+#define UC_9    UC(0x0039)
+
+#define UC_COLN UC(0x003A)
+#define UC_SCLN UC(0x003B)
+#define UC_LT   UC(0x003C)
+#define UC_EQL  UC(0x003D)
+#define UC_GT   UC(0x003E)
+#define UC_QUES UC(0x003F)
+#define UC_AT   UC(0x0040)
+
+#define UC_A    UC(0x0041)
+#define UC_B    UC(0x0042)
+#define UC_C    UC(0x0043)
+#define UC_D    UC(0x0044)
+#define UC_E    UC(0x0045)
+#define UC_F    UC(0x0046)
+#define UC_G    UC(0x0047)
+#define UC_H    UC(0x0048)
+#define UC_I    UC(0x0049)
+#define UC_J    UC(0x004A)
+#define UC_K    UC(0x004B)
+#define UC_L    UC(0x004C)
+#define UC_M    UC(0x004D)
+#define UC_N    UC(0x004E)
+#define UC_O    UC(0x004F)
+#define UC_P    UC(0x0050)
+#define UC_Q    UC(0x0051)
+#define UC_R    UC(0x0052)
+#define UC_S    UC(0x0053)
+#define UC_T    UC(0x0054)
+#define UC_U    UC(0x0055)
+#define UC_V    UC(0x0056)
+#define UC_W    UC(0x0057)
+#define UC_X    UC(0x0058)
+#define UC_Y    UC(0x0059)
+#define UC_Z    UC(0x005A)
+
+#define UC_LBRC UC(0x005B)
+#define UC_BSLS UC(0x005C)
+#define UC_RBRC UC(0x005D)
+#define UC_CIRM UC(0x005E)
+#define UC_UNDR UC(0x005F)
+
+#define UC_GRV  UC(0x0060)
+
+#define UC_a    UC(0x0061)
+#define UC_b    UC(0x0062)
+#define UC_c    UC(0x0063)
+#define UC_d    UC(0x0064)
+#define UC_e    UC(0x0065)
+#define UC_f    UC(0x0066)
+#define UC_g    UC(0x0067)
+#define UC_h    UC(0x0068)
+#define UC_i    UC(0x0069)
+#define UC_j    UC(0x006A)
+#define UC_k    UC(0x006B)
+#define UC_l    UC(0x006C)
+#define UC_m    UC(0x006D)
+#define UC_n    UC(0x006E)
+#define UC_o    UC(0x006F)
+#define UC_p    UC(0x0070)
+#define UC_q    UC(0x0071)
+#define UC_r    UC(0x0072)
+#define UC_s    UC(0x0073)
+#define UC_t    UC(0x0074)
+#define UC_u    UC(0x0075)
+#define UC_v    UC(0x0076)
+#define UC_w    UC(0x0077)
+#define UC_x    UC(0x0078)
+#define UC_y    UC(0x0079)
+#define UC_z    UC(0x007A)
+
+#define UC_LCBR UC(0x007B)
+#define UC_PIPE UC(0x007C)
+#define UC_RCBR UC(0x007D)
+#define UC_TILD UC(0x007E)
+#define UC_DEL  UC(0x007F)
+
+#endif
diff --git a/quantum/quantum.c b/quantum/quantum.c
new file mode 100644
index 000000000..098312e6e
--- /dev/null
+++ b/quantum/quantum.c
@@ -0,0 +1,853 @@
+#include "quantum.h"
+
+static void do_code16 (uint16_t code, void (*f) (uint8_t)) {
+  switch (code) {
+  case QK_MODS ... QK_MODS_MAX:
+    break;
+  default:
+    return;
+  }
+
+  if (code & QK_LCTL)
+    f(KC_LCTL);
+  if (code & QK_LSFT)
+    f(KC_LSFT);
+  if (code & QK_LALT)
+    f(KC_LALT);
+  if (code & QK_LGUI)
+    f(KC_LGUI);
+
+  if (code & QK_RCTL)
+    f(KC_RCTL);
+  if (code & QK_RSFT)
+    f(KC_RSFT);
+  if (code & QK_RALT)
+    f(KC_RALT);
+  if (code & QK_RGUI)
+    f(KC_RGUI);
+}
+
+void register_code16 (uint16_t code) {
+  do_code16 (code, register_code);
+  register_code (code);
+}
+
+void unregister_code16 (uint16_t code) {
+  unregister_code (code);
+  do_code16 (code, unregister_code);
+}
+
+__attribute__ ((weak))
+bool process_action_kb(keyrecord_t *record) {
+  return true;
+}
+
+__attribute__ ((weak))
+bool process_record_kb(uint16_t keycode, keyrecord_t *record) {
+  return process_record_user(keycode, record);
+}
+
+__attribute__ ((weak))
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+  return true;
+}
+
+void reset_keyboard(void) {
+  clear_keyboard();
+#ifdef AUDIO_ENABLE
+  stop_all_notes();
+  shutdown_user();
+#endif
+  wait_ms(250);
+#ifdef CATERINA_BOOTLOADER
+  *(uint16_t *)0x0800 = 0x7777; // these two are a-star-specific
+#endif
+  bootloader_jump();
+}
+
+// Shift / paren setup
+
+#ifndef LSPO_KEY
+  #define LSPO_KEY KC_9
+#endif
+#ifndef RSPC_KEY
+  #define RSPC_KEY KC_0
+#endif
+
+static bool shift_interrupted[2] = {0, 0};
+
+bool process_record_quantum(keyrecord_t *record) {
+
+  /* This gets the keycode from the key pressed */
+  keypos_t key = record->event.key;
+  uint16_t keycode;
+
+  #if !defined(NO_ACTION_LAYER) && defined(PREVENT_STUCK_MODIFIERS)
+    /* TODO: Use store_or_get_action() or a similar function. */
+    if (!disable_action_cache) {
+      uint8_t layer;
+
+      if (record->event.pressed) {
+        layer = layer_switch_get_layer(key);
+        update_source_layers_cache(key, layer);
+      } else {
+        layer = read_source_layers_cache(key);
+      }
+      keycode = keymap_key_to_keycode(layer, key);
+    } else
+  #endif
+    keycode = keymap_key_to_keycode(layer_switch_get_layer(key), key);
+
+    // This is how you use actions here
+    // if (keycode == KC_LEAD) {
+    //   action_t action;
+    //   action.code = ACTION_DEFAULT_LAYER_SET(0);
+    //   process_action(record, action);
+    //   return false;
+    // }
+
+  if (!(
+    process_record_kb(keycode, record) &&
+  #ifdef MIDI_ENABLE
+    process_midi(keycode, record) &&
+  #endif
+  #ifdef AUDIO_ENABLE
+    process_music(keycode, record) &&
+  #endif
+  #ifdef TAP_DANCE_ENABLE
+    process_tap_dance(keycode, record) &&
+  #endif
+  #ifndef DISABLE_LEADER
+    process_leader(keycode, record) &&
+  #endif
+  #ifndef DISABLE_CHORDING
+    process_chording(keycode, record) &&
+  #endif
+  #ifdef UNICODE_ENABLE
+    process_unicode(keycode, record) &&
+  #endif
+  #ifdef UCIS_ENABLE
+    process_ucis(keycode, record) &&
+  #endif
+  #ifdef UNICODEMAP_ENABLE
+    process_unicode_map(keycode, record) &&
+  #endif
+      true)) {
+    return false;
+  }
+
+  // Shift / paren setup
+
+  switch(keycode) {
+    case RESET:
+      if (record->event.pressed) {
+        reset_keyboard();
+      }
+          return false;
+      break;
+    case DEBUG:
+      if (record->event.pressed) {
+          print("\nDEBUG: enabled.\n");
+          debug_enable = true;
+      }
+          return false;
+      break;
+        #ifdef RGBLIGHT_ENABLE
+        case RGB_TOG:
+                if (record->event.pressed) {
+                        rgblight_toggle();
+      }
+          return false;
+      break;
+        case RGB_MOD:
+                if (record->event.pressed) {
+                        rgblight_step();
+      }
+          return false;
+      break;
+        case RGB_HUI:
+                if (record->event.pressed) {
+                        rgblight_increase_hue();
+      }
+          return false;
+      break;
+        case RGB_HUD:
+                if (record->event.pressed) {
+                        rgblight_decrease_hue();
+      }
+          return false;
+      break;
+        case RGB_SAI:
+                if (record->event.pressed) {
+                        rgblight_increase_sat();
+      }
+          return false;
+      break;
+        case RGB_SAD:
+                if (record->event.pressed) {
+                        rgblight_decrease_sat();
+      }
+          return false;
+      break;
+        case RGB_VAI:
+                if (record->event.pressed) {
+                        rgblight_increase_val();
+      }
+          return false;
+      break;
+        case RGB_VAD:
+                if (record->event.pressed) {
+                        rgblight_decrease_val();
+      }
+          return false;
+      break;
+        #endif
+    case MAGIC_SWAP_CONTROL_CAPSLOCK ... MAGIC_TOGGLE_NKRO:
+      if (record->event.pressed) {
+        // MAGIC actions (BOOTMAGIC without the boot)
+        if (!eeconfig_is_enabled()) {
+            eeconfig_init();
+        }
+        /* keymap config */
+        keymap_config.raw = eeconfig_read_keymap();
+        switch (keycode)
+        {
+          case MAGIC_SWAP_CONTROL_CAPSLOCK:
+            keymap_config.swap_control_capslock = true;
+            break;
+          case MAGIC_CAPSLOCK_TO_CONTROL:
+            keymap_config.capslock_to_control = true;
+            break;
+          case MAGIC_SWAP_LALT_LGUI:
+            keymap_config.swap_lalt_lgui = true;
+            break;
+          case MAGIC_SWAP_RALT_RGUI:
+            keymap_config.swap_ralt_rgui = true;
+            break;
+          case MAGIC_NO_GUI:
+            keymap_config.no_gui = true;
+            break;
+          case MAGIC_SWAP_GRAVE_ESC:
+            keymap_config.swap_grave_esc = true;
+            break;
+          case MAGIC_SWAP_BACKSLASH_BACKSPACE:
+            keymap_config.swap_backslash_backspace = true;
+            break;
+          case MAGIC_HOST_NKRO:
+            keymap_config.nkro = true;
+            break;
+          case MAGIC_SWAP_ALT_GUI:
+            keymap_config.swap_lalt_lgui = true;
+            keymap_config.swap_ralt_rgui = true;
+            break;
+          case MAGIC_UNSWAP_CONTROL_CAPSLOCK:
+            keymap_config.swap_control_capslock = false;
+            break;
+          case MAGIC_UNCAPSLOCK_TO_CONTROL:
+            keymap_config.capslock_to_control = false;
+            break;
+          case MAGIC_UNSWAP_LALT_LGUI:
+            keymap_config.swap_lalt_lgui = false;
+            break;
+          case MAGIC_UNSWAP_RALT_RGUI:
+            keymap_config.swap_ralt_rgui = false;
+            break;
+          case MAGIC_UNNO_GUI:
+            keymap_config.no_gui = false;
+            break;
+          case MAGIC_UNSWAP_GRAVE_ESC:
+            keymap_config.swap_grave_esc = false;
+            break;
+          case MAGIC_UNSWAP_BACKSLASH_BACKSPACE:
+            keymap_config.swap_backslash_backspace = false;
+            break;
+          case MAGIC_UNHOST_NKRO:
+            keymap_config.nkro = false;
+            break;
+          case MAGIC_UNSWAP_ALT_GUI:
+            keymap_config.swap_lalt_lgui = false;
+            keymap_config.swap_ralt_rgui = false;
+            break;
+          case MAGIC_TOGGLE_NKRO:
+            keymap_config.nkro = !keymap_config.nkro;
+            break;
+          default:
+            break;
+        }
+        eeconfig_update_keymap(keymap_config.raw);
+        clear_keyboard(); // clear to prevent stuck keys
+
+        return false;
+      }
+      break;
+    case KC_LSPO: {
+      if (record->event.pressed) {
+        shift_interrupted[0] = false;
+        register_mods(MOD_BIT(KC_LSFT));
+      }
+      else {
+        #ifdef DISABLE_SPACE_CADET_ROLLOVER
+          if (get_mods() & MOD_BIT(KC_RSFT)) {
+            shift_interrupted[0] = true;
+            shift_interrupted[1] = true;
+          }
+        #endif
+        if (!shift_interrupted[0]) {
+          register_code(LSPO_KEY);
+          unregister_code(LSPO_KEY);
+        }
+        unregister_mods(MOD_BIT(KC_LSFT));
+      }
+      return false;
+      // break;
+    }
+
+    case KC_RSPC: {
+      if (record->event.pressed) {
+        shift_interrupted[1] = false;
+        register_mods(MOD_BIT(KC_RSFT));
+      }
+      else {
+        #ifdef DISABLE_SPACE_CADET_ROLLOVER
+          if (get_mods() & MOD_BIT(KC_LSFT)) {
+            shift_interrupted[0] = true;
+            shift_interrupted[1] = true;
+          }
+        #endif
+        if (!shift_interrupted[1]) {
+          register_code(RSPC_KEY);
+          unregister_code(RSPC_KEY);
+        }
+        unregister_mods(MOD_BIT(KC_RSFT));
+      }
+      return false;
+      // break;
+    }
+    default: {
+      shift_interrupted[0] = true;
+      shift_interrupted[1] = true;
+      break;
+    }
+  }
+
+  return process_action_kb(record);
+}
+
+const bool ascii_to_qwerty_shift_lut[0x80] PROGMEM = {
+    0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0,
+    0, 1, 1, 1, 1, 1, 1, 0,
+    1, 1, 1, 1, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 1, 0, 1, 0, 1, 1,
+    1, 1, 1, 1, 1, 1, 1, 1,
+    1, 1, 1, 1, 1, 1, 1, 1,
+    1, 1, 1, 1, 1, 1, 1, 1,
+    1, 1, 1, 0, 0, 0, 1, 1,
+    0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 1, 1, 1, 1, 0
+};
+
+const uint8_t ascii_to_qwerty_keycode_lut[0x80] PROGMEM = {
+    0, 0, 0, 0, 0, 0, 0, 0,
+    KC_BSPC, KC_TAB, KC_ENT, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, KC_ESC, 0, 0, 0, 0,
+    KC_SPC, KC_1, KC_QUOT, KC_3, KC_4, KC_5, KC_7, KC_QUOT,
+    KC_9, KC_0, KC_8, KC_EQL, KC_COMM, KC_MINS, KC_DOT, KC_SLSH,
+    KC_0, KC_1, KC_2, KC_3, KC_4, KC_5, KC_6, KC_7,
+    KC_8, KC_9, KC_SCLN, KC_SCLN, KC_COMM, KC_EQL, KC_DOT, KC_SLSH,
+    KC_2, KC_A, KC_B, KC_C, KC_D, KC_E, KC_F, KC_G,
+    KC_H, KC_I, KC_J, KC_K, KC_L, KC_M, KC_N, KC_O,
+    KC_P, KC_Q, KC_R, KC_S, KC_T, KC_U, KC_V, KC_W,
+    KC_X, KC_Y, KC_Z, KC_LBRC, KC_BSLS, KC_RBRC, KC_6, KC_MINS,
+    KC_GRV, KC_A, KC_B, KC_C, KC_D, KC_E, KC_F, KC_G,
+    KC_H, KC_I, KC_J, KC_K, KC_L, KC_M, KC_N, KC_O,
+    KC_P, KC_Q, KC_R, KC_S, KC_T, KC_U, KC_V, KC_W,
+    KC_X, KC_Y, KC_Z, KC_LBRC, KC_BSLS, KC_RBRC, KC_GRV, KC_DEL
+};
+
+/* for users whose OSes are set to Colemak */
+#if 0
+#include "keymap_colemak.h"
+
+const bool ascii_to_colemak_shift_lut[0x80] PROGMEM = {
+    0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0,
+    0, 1, 1, 1, 1, 1, 1, 0,
+    1, 1, 1, 1, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 1, 0, 1, 0, 1, 1,
+    1, 1, 1, 1, 1, 1, 1, 1,
+    1, 1, 1, 1, 1, 1, 1, 1,
+    1, 1, 1, 1, 1, 1, 1, 1,
+    1, 1, 1, 0, 0, 0, 1, 1,
+    0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 1, 1, 1, 1, 0
+};
+
+const uint8_t ascii_to_colemak_keycode_lut[0x80] PROGMEM = {
+    0, 0, 0, 0, 0, 0, 0, 0,
+    KC_BSPC, KC_TAB, KC_ENT, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, KC_ESC, 0, 0, 0, 0,
+    KC_SPC, KC_1, KC_QUOT, KC_3, KC_4, KC_5, KC_7, KC_QUOT,
+    KC_9, KC_0, KC_8, KC_EQL, KC_COMM, KC_MINS, KC_DOT, KC_SLSH,
+    KC_0, KC_1, KC_2, KC_3, KC_4, KC_5, KC_6, KC_7,
+    KC_8, KC_9, CM_SCLN, CM_SCLN, KC_COMM, KC_EQL, KC_DOT, KC_SLSH,
+    KC_2, CM_A, CM_B, CM_C, CM_D, CM_E, CM_F, CM_G,
+    CM_H, CM_I, CM_J, CM_K, CM_L, CM_M, CM_N, CM_O,
+    CM_P, CM_Q, CM_R, CM_S, CM_T, CM_U, CM_V, CM_W,
+    CM_X, CM_Y, CM_Z, KC_LBRC, KC_BSLS, KC_RBRC, KC_6, KC_MINS,
+    KC_GRV, CM_A, CM_B, CM_C, CM_D, CM_E, CM_F, CM_G,
+    CM_H, CM_I, CM_J, CM_K, CM_L, CM_M, CM_N, CM_O,
+    CM_P, CM_Q, CM_R, CM_S, CM_T, CM_U, CM_V, CM_W,
+    CM_X, CM_Y, CM_Z, KC_LBRC, KC_BSLS, KC_RBRC, KC_GRV, KC_DEL
+};
+
+#endif
+
+void send_string(const char *str) {
+    while (1) {
+        uint8_t keycode;
+        uint8_t ascii_code = pgm_read_byte(str);
+        if (!ascii_code) break;
+        keycode = pgm_read_byte(&ascii_to_qwerty_keycode_lut[ascii_code]);
+        if (pgm_read_byte(&ascii_to_qwerty_shift_lut[ascii_code])) {
+            register_code(KC_LSFT);
+            register_code(keycode);
+            unregister_code(keycode);
+            unregister_code(KC_LSFT);
+        }
+        else {
+            register_code(keycode);
+            unregister_code(keycode);
+        }
+        ++str;
+    }
+}
+
+void update_tri_layer(uint8_t layer1, uint8_t layer2, uint8_t layer3) {
+  if (IS_LAYER_ON(layer1) && IS_LAYER_ON(layer2)) {
+    layer_on(layer3);
+  } else {
+    layer_off(layer3);
+  }
+}
+
+void tap_random_base64(void) {
+  #if defined(__AVR_ATmega32U4__)
+    uint8_t key = (TCNT0 + TCNT1 + TCNT3 + TCNT4) % 64;
+  #else
+    uint8_t key = rand() % 64;
+  #endif
+  switch (key) {
+    case 0 ... 25:
+      register_code(KC_LSFT);
+      register_code(key + KC_A);
+      unregister_code(key + KC_A);
+      unregister_code(KC_LSFT);
+      break;
+    case 26 ... 51:
+      register_code(key - 26 + KC_A);
+      unregister_code(key - 26 + KC_A);
+      break;
+    case 52:
+      register_code(KC_0);
+      unregister_code(KC_0);
+      break;
+    case 53 ... 61:
+      register_code(key - 53 + KC_1);
+      unregister_code(key - 53 + KC_1);
+      break;
+    case 62:
+      register_code(KC_LSFT);
+      register_code(KC_EQL);
+      unregister_code(KC_EQL);
+      unregister_code(KC_LSFT);
+      break;
+    case 63:
+      register_code(KC_SLSH);
+      unregister_code(KC_SLSH);
+      break;
+  }
+}
+
+void matrix_init_quantum() {
+  #ifdef BACKLIGHT_ENABLE
+    backlight_init_ports();
+  #endif
+  matrix_init_kb();
+}
+
+void matrix_scan_quantum() {
+  #ifdef AUDIO_ENABLE
+    matrix_scan_music();
+  #endif
+
+  #ifdef TAP_DANCE_ENABLE
+    matrix_scan_tap_dance();
+  #endif
+  matrix_scan_kb();
+}
+
+#if defined(BACKLIGHT_ENABLE) && defined(BACKLIGHT_PIN)
+
+static const uint8_t backlight_pin = BACKLIGHT_PIN;
+
+#if BACKLIGHT_PIN == B7
+#  define COM1x1 COM1C1
+#  define OCR1x  OCR1C
+#elif BACKLIGHT_PIN == B6
+#  define COM1x1 COM1B1
+#  define OCR1x  OCR1B
+#elif BACKLIGHT_PIN == B5
+#  define COM1x1 COM1A1
+#  define OCR1x  OCR1A
+#else
+#  error "Backlight pin not supported - use B5, B6, or B7"
+#endif
+
+__attribute__ ((weak))
+void backlight_init_ports(void)
+{
+
+  // Setup backlight pin as output and output low.
+  // DDRx |= n
+  _SFR_IO8((backlight_pin >> 4) + 1) |= _BV(backlight_pin & 0xF);
+  // PORTx &= ~n
+  _SFR_IO8((backlight_pin >> 4) + 2) &= ~_BV(backlight_pin & 0xF);
+
+  // Use full 16-bit resolution.
+  ICR1 = 0xFFFF;
+
+  // I could write a wall of text here to explain... but TL;DW
+  // Go read the ATmega32u4 datasheet.
+  // And this: http://blog.saikoled.com/post/43165849837/secret-konami-cheat-code-to-high-resolution-pwm-on
+
+  // Pin PB7 = OCR1C (Timer 1, Channel C)
+  // Compare Output Mode = Clear on compare match, Channel C = COM1C1=1 COM1C0=0
+  // (i.e. start high, go low when counter matches.)
+  // WGM Mode 14 (Fast PWM) = WGM13=1 WGM12=1 WGM11=1 WGM10=0
+  // Clock Select = clk/1 (no prescaling) = CS12=0 CS11=0 CS10=1
+
+  TCCR1A = _BV(COM1x1) | _BV(WGM11); // = 0b00001010;
+  TCCR1B = _BV(WGM13) | _BV(WGM12) | _BV(CS10); // = 0b00011001;
+
+  backlight_init();
+  #ifdef BACKLIGHT_BREATHING
+    breathing_defaults();
+  #endif
+}
+
+__attribute__ ((weak))
+void backlight_set(uint8_t level)
+{
+  // Prevent backlight blink on lowest level
+  // PORTx &= ~n
+  _SFR_IO8((backlight_pin >> 4) + 2) &= ~_BV(backlight_pin & 0xF);
+
+  if ( level == 0 ) {
+    // Turn off PWM control on backlight pin, revert to output low.
+    TCCR1A &= ~(_BV(COM1x1));
+    OCR1x = 0x0;
+  } else if ( level == BACKLIGHT_LEVELS ) {
+    // Turn on PWM control of backlight pin
+    TCCR1A |= _BV(COM1x1);
+    // Set the brightness
+    OCR1x = 0xFFFF;
+  } else {
+    // Turn on PWM control of backlight pin
+    TCCR1A |= _BV(COM1x1);
+    // Set the brightness
+    OCR1x = 0xFFFF >> ((BACKLIGHT_LEVELS - level) * ((BACKLIGHT_LEVELS + 1) / 2));
+  }
+
+  #ifdef BACKLIGHT_BREATHING
+    breathing_intensity_default();
+  #endif
+}
+
+
+#ifdef BACKLIGHT_BREATHING
+
+#define BREATHING_NO_HALT  0
+#define BREATHING_HALT_OFF 1
+#define BREATHING_HALT_ON  2
+
+static uint8_t breath_intensity;
+static uint8_t breath_speed;
+static uint16_t breathing_index;
+static uint8_t breathing_halt;
+
+void breathing_enable(void)
+{
+    if (get_backlight_level() == 0)
+    {
+        breathing_index = 0;
+    }
+    else
+    {
+        // Set breathing_index to be at the midpoint (brightest point)
+        breathing_index = 0x20 << breath_speed;
+    }
+
+    breathing_halt = BREATHING_NO_HALT;
+
+    // Enable breathing interrupt
+    TIMSK1 |= _BV(OCIE1A);
+}
+
+void breathing_pulse(void)
+{
+    if (get_backlight_level() == 0)
+    {
+        breathing_index = 0;
+    }
+    else
+    {
+        // Set breathing_index to be at the midpoint + 1 (brightest point)
+        breathing_index = 0x21 << breath_speed;
+    }
+
+    breathing_halt = BREATHING_HALT_ON;
+
+    // Enable breathing interrupt
+    TIMSK1 |= _BV(OCIE1A);
+}
+
+void breathing_disable(void)
+{
+    // Disable breathing interrupt
+    TIMSK1 &= ~_BV(OCIE1A);
+    backlight_set(get_backlight_level());
+}
+
+void breathing_self_disable(void)
+{
+    if (get_backlight_level() == 0)
+    {
+        breathing_halt = BREATHING_HALT_OFF;
+    }
+    else
+    {
+        breathing_halt = BREATHING_HALT_ON;
+    }
+
+    //backlight_set(get_backlight_level());
+}
+
+void breathing_toggle(void)
+{
+    if (!is_breathing())
+    {
+        if (get_backlight_level() == 0)
+        {
+            breathing_index = 0;
+        }
+        else
+        {
+            // Set breathing_index to be at the midpoint + 1 (brightest point)
+            breathing_index = 0x21 << breath_speed;
+        }
+
+        breathing_halt = BREATHING_NO_HALT;
+    }
+
+    // Toggle breathing interrupt
+    TIMSK1 ^= _BV(OCIE1A);
+
+    // Restore backlight level
+    if (!is_breathing())
+    {
+        backlight_set(get_backlight_level());
+    }
+}
+
+bool is_breathing(void)
+{
+    return (TIMSK1 && _BV(OCIE1A));
+}
+
+void breathing_intensity_default(void)
+{
+    //breath_intensity = (uint8_t)((uint16_t)100 * (uint16_t)get_backlight_level() / (uint16_t)BACKLIGHT_LEVELS);
+    breath_intensity = ((BACKLIGHT_LEVELS - get_backlight_level()) * ((BACKLIGHT_LEVELS + 1) / 2));
+}
+
+void breathing_intensity_set(uint8_t value)
+{
+    breath_intensity = value;
+}
+
+void breathing_speed_default(void)
+{
+    breath_speed = 4;
+}
+
+void breathing_speed_set(uint8_t value)
+{
+    bool is_breathing_now = is_breathing();
+    uint8_t old_breath_speed = breath_speed;
+
+    if (is_breathing_now)
+    {
+        // Disable breathing interrupt
+        TIMSK1 &= ~_BV(OCIE1A);
+    }
+
+    breath_speed = value;
+
+    if (is_breathing_now)
+    {
+        // Adjust index to account for new speed
+        breathing_index = (( (uint8_t)( (breathing_index) >> old_breath_speed ) ) & 0x3F) << breath_speed;
+
+        // Enable breathing interrupt
+        TIMSK1 |= _BV(OCIE1A);
+    }
+
+}
+
+void breathing_speed_inc(uint8_t value)
+{
+    if ((uint16_t)(breath_speed - value) > 10 )
+    {
+        breathing_speed_set(0);
+    }
+    else
+    {
+        breathing_speed_set(breath_speed - value);
+    }
+}
+
+void breathing_speed_dec(uint8_t value)
+{
+    if ((uint16_t)(breath_speed + value) > 10 )
+    {
+        breathing_speed_set(10);
+    }
+    else
+    {
+        breathing_speed_set(breath_speed + value);
+    }
+}
+
+void breathing_defaults(void)
+{
+    breathing_intensity_default();
+    breathing_speed_default();
+    breathing_halt = BREATHING_NO_HALT;
+}
+
+/* Breathing Sleep LED brighness(PWM On period) table
+ * (64[steps] * 4[duration]) / 64[PWM periods/s] = 4 second breath cycle
+ *
+ * http://www.wolframalpha.com/input/?i=%28sin%28+x%2F64*pi%29**8+*+255%2C+x%3D0+to+63
+ * (0..63).each {|x| p ((sin(x/64.0*PI)**8)*255).to_i }
+ */
+static const uint8_t breathing_table[64] PROGMEM = {
+  0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   1,   2,   4,   6,  10,
+ 15,  23,  32,  44,  58,  74,  93, 113, 135, 157, 179, 199, 218, 233, 245, 252,
+255, 252, 245, 233, 218, 199, 179, 157, 135, 113,  93,  74,  58,  44,  32,  23,
+ 15,  10,   6,   4,   2,   1,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
+};
+
+ISR(TIMER1_COMPA_vect)
+{
+    // OCR1x = (pgm_read_byte(&breathing_table[ ( (uint8_t)( (breathing_index++) >> breath_speed ) ) & 0x3F ] )) * breath_intensity;
+
+
+    uint8_t local_index = ( (uint8_t)( (breathing_index++) >> breath_speed ) ) & 0x3F;
+
+    if (((breathing_halt == BREATHING_HALT_ON) && (local_index == 0x20)) || ((breathing_halt == BREATHING_HALT_OFF) && (local_index == 0x3F)))
+    {
+        // Disable breathing interrupt
+        TIMSK1 &= ~_BV(OCIE1A);
+    }
+
+    OCR1x = (uint16_t)(((uint16_t)pgm_read_byte(&breathing_table[local_index]) * 257)) >> breath_intensity;
+
+}
+
+
+
+#endif // breathing
+
+#else // backlight
+
+__attribute__ ((weak))
+void backlight_init_ports(void)
+{
+
+}
+
+__attribute__ ((weak))
+void backlight_set(uint8_t level)
+{
+
+}
+
+#endif // backlight
+
+
+
+__attribute__ ((weak))
+void led_set_user(uint8_t usb_led) {
+
+}
+
+__attribute__ ((weak))
+void led_set_kb(uint8_t usb_led) {
+    led_set_user(usb_led);
+}
+
+__attribute__ ((weak))
+void led_init_ports(void)
+{
+
+}
+
+__attribute__ ((weak))
+void led_set(uint8_t usb_led)
+{
+
+  // Example LED Code
+  //
+    // // Using PE6 Caps Lock LED
+    // if (usb_led & (1<<USB_LED_CAPS_LOCK))
+    // {
+    //     // Output high.
+    //     DDRE |= (1<<6);
+    //     PORTE |= (1<<6);
+    // }
+    // else
+    // {
+    //     // Output low.
+    //     DDRE &= ~(1<<6);
+    //     PORTE &= ~(1<<6);
+    // }
+
+  led_set_kb(usb_led);
+}
+
+
+//------------------------------------------------------------------------------
+// Override these functions in your keymap file to play different tunes on
+// different events such as startup and bootloader jump
+
+__attribute__ ((weak))
+void startup_user() {}
+
+__attribute__ ((weak))
+void shutdown_user() {}
+
+//------------------------------------------------------------------------------
diff --git a/quantum/quantum.h b/quantum/quantum.h
new file mode 100644
index 000000000..0c6046649
--- /dev/null
+++ b/quantum/quantum.h
@@ -0,0 +1,113 @@
+#ifndef QUANTUM_H
+#define QUANTUM_H
+
+#if defined(__AVR__)
+#include <avr/pgmspace.h>
+#include <avr/io.h>
+#include <avr/interrupt.h>
+#endif
+#include "wait.h"
+#include "matrix.h"
+#include "keymap.h"
+#ifdef BACKLIGHT_ENABLE
+    #include "backlight.h"
+#endif
+#ifdef RGBLIGHT_ENABLE
+  #include "rgblight.h"
+#endif
+
+#include "action_layer.h"
+#include "eeconfig.h"
+#include <stddef.h>
+#include "bootloader.h"
+#include "timer.h"
+#include "config_common.h"
+#include "led.h"
+#include "action_util.h"
+#include <stdlib.h>
+#include "print.h"
+
+
+extern uint32_t default_layer_state;
+
+#ifndef NO_ACTION_LAYER
+        extern uint32_t layer_state;
+#endif
+
+#ifdef MIDI_ENABLE
+        #include <lufa.h>
+        #include "process_midi.h"
+#endif
+
+#ifdef AUDIO_ENABLE
+        #include "audio.h"
+        #include "process_music.h"
+#endif
+
+#ifndef DISABLE_LEADER
+        #include "process_leader.h"
+#endif
+
+#define DISABLE_CHORDING
+#ifndef DISABLE_CHORDING
+        #include "process_chording.h"
+#endif
+
+#ifdef UNICODE_ENABLE
+        #include "process_unicode.h"
+#endif
+
+#include "process_tap_dance.h"
+
+#define SEND_STRING(str) send_string(PSTR(str))
+void send_string(const char *str);
+
+// For tri-layer
+void update_tri_layer(uint8_t layer1, uint8_t layer2, uint8_t layer3);
+
+void tap_random_base64(void);
+
+#define IS_LAYER_ON(layer)  (layer_state & (1UL << (layer)))
+#define IS_LAYER_OFF(layer) (~layer_state & (1UL << (layer)))
+
+void matrix_init_kb(void);
+void matrix_scan_kb(void);
+void matrix_init_user(void);
+void matrix_scan_user(void);
+bool process_action_kb(keyrecord_t *record);
+bool process_record_kb(uint16_t keycode, keyrecord_t *record);
+bool process_record_user(uint16_t keycode, keyrecord_t *record);
+
+void reset_keyboard(void);
+
+void startup_user(void);
+void shutdown_user(void);
+
+void register_code16 (uint16_t code);
+void unregister_code16 (uint16_t code);
+
+#ifdef BACKLIGHT_ENABLE
+void backlight_init_ports(void);
+
+#ifdef BACKLIGHT_BREATHING
+void breathing_enable(void);
+void breathing_pulse(void);
+void breathing_disable(void);
+void breathing_self_disable(void);
+void breathing_toggle(void);
+bool is_breathing(void);
+
+void breathing_defaults(void);
+void breathing_intensity_default(void);
+void breathing_speed_default(void);
+void breathing_speed_set(uint8_t value);
+void breathing_speed_inc(uint8_t value);
+void breathing_speed_dec(uint8_t value);
+#endif
+
+#endif
+
+void led_set_user(uint8_t usb_led);
+void led_set_kb(uint8_t usb_led);
+
+#endif
diff --git a/quantum/quantum.mk b/quantum/quantum.mk
deleted file mode 100644
index de93af7e8..000000000
--- a/quantum/quantum.mk
+++ /dev/null
@@ -1,53 +0,0 @@
-QUANTUM_DIR = quantum
-
-# # project specific files
-SRC += $(QUANTUM_DIR)/keymap_common.c \
-        $(QUANTUM_DIR)/led.c
-
-# ifdef KEYMAP_FILE
-# ifneq (,$(shell grep USING_MIDI '$(KEYMAP_FILE)'))
-# MIDI_ENABLE=yes
-# $(info  * Overriding MIDI_ENABLE setting - $(KEYMAP_FILE) requires it)
-# endif
-# ifneq (,$(shell grep USING_UNICODE '$(KEYMAP_FILE)'))
-# UNICODE_ENABLE=yes
-# $(info  * Overriding UNICODE_ENABLE setting - $(KEYMAP_FILE) requires it)
-# endif
-# ifneq (,$(shell grep USING_BACKLIGHT '$(KEYMAP_FILE)'))
-# BACKLIGHT_ENABLE=yes
-# $(info  * Overriding BACKLIGHT_ENABLE setting - $(KEYMAP_FILE) requires it)
-# endif
-# endif
-
-ifndef CUSTOM_MATRIX
-        SRC += $(QUANTUM_DIR)/matrix.c
-endif
-
-ifdef MIDI_ENABLE
-        SRC += $(QUANTUM_DIR)/keymap_midi.c
-endif
-
-ifdef AUDIO_ENABLE
-        SRC += $(QUANTUM_DIR)/audio.c
-endif
-
-ifdef UNICODE_ENABLE
-        SRC += $(QUANTUM_DIR)/keymap_unicode.c
-endif
-
-ifdef RGBLIGHT_ENABLE
-        SRC += $(QUANTUM_DIR)/light_ws2812.c
-        SRC += $(QUANTUM_DIR)/rgblight.c
-        OPT_DEFS += -DRGBLIGHT_ENABLE
-endif
-
-# Optimize size but this may cause error "relocation truncated to fit"
-#EXTRALDFLAGS = -Wl,--relax
-
-# Search Path
-VPATH += $(TOP_DIR)/$(QUANTUM_DIR)
-
-include $(TMK_DIR)/protocol/lufa.mk
-
-include $(TMK_DIR)/common.mk
-include $(TMK_DIR)/rules.mk
diff --git a/quantum/rgblight.c b/quantum/rgblight.c
index 2215cf5cd..d550c5866 100644
--- a/quantum/rgblight.c
+++ b/quantum/rgblight.c
@@ -6,29 +6,65 @@
 #include "rgblight.h"
 #include "debug.h"
 
+// Lightness curve using the CIE 1931 lightness formula
+//Generated by the python script provided in http://jared.geek.nz/2013/feb/linear-led-pwm
 const uint8_t DIM_CURVE[] PROGMEM = {
-        0, 1, 1, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3,
-        3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4,
-        4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6,
-        6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8,
-        8, 8, 9, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 11, 11, 11,
-        11, 11, 12, 12, 12, 12, 12, 13, 13, 13, 13, 14, 14, 14, 14, 15,
-        15, 15, 16, 16, 16, 16, 17, 17, 17, 18, 18, 18, 19, 19, 19, 20,
-        20, 20, 21, 21, 22, 22, 22, 23, 23, 24, 24, 25, 25, 25, 26, 26,
-        27, 27, 28, 28, 29, 29, 30, 30, 31, 32, 32, 33, 33, 34, 35, 35,
-        36, 36, 37, 38, 38, 39, 40, 40, 41, 42, 43, 43, 44, 45, 46, 47,
-        48, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62,
-        63, 64, 65, 66, 68, 69, 70, 71, 73, 74, 75, 76, 78, 79, 81, 82,
-        83, 85, 86, 88, 90, 91, 93, 94, 96, 98, 99, 101, 103, 105, 107, 109,
-        110, 112, 114, 116, 118, 121, 123, 125, 127, 129, 132, 134, 136, 139, 141, 144,
-        146, 149, 151, 154, 157, 159, 162, 165, 168, 171, 174, 177, 180, 183, 186, 190,
-        193, 196, 200, 203, 207, 211, 214, 218, 222, 226, 230, 234, 238, 242, 248, 255,
+    0, 0, 0, 0, 0, 1, 1, 1, 1, 1,
+    1, 1, 1, 1, 2, 2, 2, 2, 2, 2,
+    2, 2, 2, 3, 3, 3, 3, 3, 3, 3,
+    3, 4, 4, 4, 4, 4, 4, 5, 5, 5,
+    5, 5, 6, 6, 6, 6, 6, 7, 7, 7,
+    7, 8, 8, 8, 8, 9, 9, 9, 10, 10,
+    10, 10, 11, 11, 11, 12, 12, 12, 13, 13,
+    13, 14, 14, 15, 15, 15, 16, 16, 17, 17,
+    17, 18, 18, 19, 19, 20, 20, 21, 21, 22,
+    22, 23, 23, 24, 24, 25, 25, 26, 26, 27,
+    28, 28, 29, 29, 30, 31, 31, 32, 32, 33,
+    34, 34, 35, 36, 37, 37, 38, 39, 39, 40,
+    41, 42, 43, 43, 44, 45, 46, 47, 47, 48,
+    49, 50, 51, 52, 53, 54, 54, 55, 56, 57,
+    58, 59, 60, 61, 62, 63, 64, 65, 66, 67,
+    68, 70, 71, 72, 73, 74, 75, 76, 77, 79,
+    80, 81, 82, 83, 85, 86, 87, 88, 90, 91,
+    92, 94, 95, 96, 98, 99, 100, 102, 103, 105,
+    106, 108, 109, 110, 112, 113, 115, 116, 118, 120,
+    121, 123, 124, 126, 128, 129, 131, 132, 134, 136,
+    138, 139, 141, 143, 145, 146, 148, 150, 152, 154,
+    155, 157, 159, 161, 163, 165, 167, 169, 171, 173,
+    175, 177, 179, 181, 183, 185, 187, 189, 191, 193,
+    196, 198, 200, 202, 204, 207, 209, 211, 214, 216,
+    218, 220, 223, 225, 228, 230, 232, 235, 237, 240,
+    242, 245, 247, 250, 252, 255,
+    };
+
+const uint8_t RGBLED_BREATHING_TABLE[] PROGMEM = {
+  0, 0, 0, 0, 1, 1, 1, 2, 2, 3, 4, 5, 5, 6, 7, 9,
+  10, 11, 12, 14, 15, 17, 18, 20, 21, 23, 25, 27, 29, 31, 33, 35,
+  37, 40, 42, 44, 47, 49, 52, 54, 57, 59, 62, 65, 67, 70, 73, 76,
+  79, 82, 85, 88, 90, 93, 97, 100, 103, 106, 109, 112, 115, 118, 121, 124,
+  127, 131, 134, 137, 140, 143, 146, 149, 152, 155, 158, 162, 165, 167, 170, 173,
+  176, 179, 182, 185, 188, 190, 193, 196, 198, 201, 203, 206, 208, 211, 213, 215,
+  218, 220, 222, 224, 226, 228, 230, 232, 234, 235, 237, 238, 240, 241, 243, 244,
+  245, 246, 248, 249, 250, 250, 251, 252, 253, 253, 254, 254, 254, 255, 255, 255,
+  255, 255, 255, 255, 254, 254, 254, 253, 253, 252, 251, 250, 250, 249, 248, 246,
+  245, 244, 243, 241, 240, 238, 237, 235, 234, 232, 230, 228, 226, 224, 222, 220,
+  218, 215, 213, 211, 208, 206, 203, 201, 198, 196, 193, 190, 188, 185, 182, 179,
+  176, 173, 170, 167, 165, 162, 158, 155, 152, 149, 146, 143, 140, 137, 134, 131,
+  128, 124, 121, 118, 115, 112, 109, 106, 103, 100, 97, 93, 90, 88, 85, 82,
+  79, 76, 73, 70, 67, 65, 62, 59, 57, 54, 52, 49, 47, 44, 42, 40,
+  37, 35, 33, 31, 29, 27, 25, 23, 21, 20, 18, 17, 15, 14, 12, 11,
+  10, 9, 7, 6, 5, 5, 4, 3, 2, 2, 1, 1, 1, 0, 0, 0
 };
-const uint8_t RGBLED_BREATHING_TABLE[] PROGMEM = {0,0,0,0,1,1,1,2,2,3,4,5,5,6,7,9,10,11,12,14,15,17,18,20,21,23,25,27,29,31,33,35,37,40,42,44,47,49,52,54,57,59,62,65,67,70,73,76,79,82,85,88,90,93,97,100,103,106,109,112,115,118,121,124,127,131,134,137,140,143,146,149,152,155,158,162,165,167,170,173,176,179,182,185,188,190,193,196,198,201,203,206,208,211,213,215,218,220,222,224,226,228,230,232,234,235,237,238,240,241,243,244,245,246,248,249,250,250,251,252,253,253,254,254,254,255,255,255,255,255,255,255,254,254,254,253,253,252,251,250,250,249,248,246,245,244,243,241,240,238,237,235,234,232,230,228,226,224,222,220,218,215,213,211,208,206,203,201,198,196,193,190,188,185,182,179,176,173,170,167,165,162,158,155,152,149,146,143,140,137,134,131,128,124,121,118,115,112,109,106,103,100,97,93,90,88,85,82,79,76,73,70,67,65,62,59,57,54,52,49,47,44,42,40,37,35,33,31,29,27,25,23,21,20,18,17,15,14,12,11,10,9,7,6,5,5,4,3,2,2,1,1,1,0,0,0};
+
+__attribute__ ((weak))
 const uint8_t RGBLED_BREATHING_INTERVALS[] PROGMEM = {30, 20, 10, 5};
+__attribute__ ((weak))
 const uint8_t RGBLED_RAINBOW_MOOD_INTERVALS[] PROGMEM = {120, 60, 30};
+__attribute__ ((weak))
 const uint8_t RGBLED_RAINBOW_SWIRL_INTERVALS[] PROGMEM = {100, 50, 20};
+__attribute__ ((weak))
 const uint8_t RGBLED_SNAKE_INTERVALS[] PROGMEM = {100, 50, 20};
+__attribute__ ((weak))
 const uint8_t RGBLED_KNIGHT_INTERVALS[] PROGMEM = {100, 50, 20};
 
 rgblight_config_t rgblight_config;
@@ -38,63 +74,54 @@ uint8_t rgblight_inited = 0;
 
 
 void sethsv(uint16_t hue, uint8_t sat, uint8_t val, struct cRGB *led1) {
-        /* convert hue, saturation and brightness ( HSB/HSV ) to RGB
-        The DIM_CURVE is used only on brightness/value and on saturation (inverted).
-        This looks the most natural.
-        */
-  uint8_t r, g, b;
-
-  val = pgm_read_byte(&DIM_CURVE[val]);
-        sat = 255 - pgm_read_byte(&DIM_CURVE[255 - sat]);
-
-        uint8_t base;
-
-        if (sat == 0) { // Acromatic color (gray). Hue doesn't mind.
-                r = val;
-                g = val;
-                b = val;
-        } else  {
-                base = ((255 - sat) * val) >> 8;
-
-                switch (hue / 60) {
-                case 0:
-                        r = val;
-                        g = (((val - base)*hue) / 60) + base;
-                        b = base;
-                        break;
-
-                case 1:
-                        r = (((val - base)*(60 - (hue % 60))) / 60) + base;
-                        g = val;
-                        b = base;
-                        break;
-
-                case 2:
-                        r = base;
-                        g = val;
-                        b = (((val - base)*(hue % 60)) / 60) + base;
-                        break;
-
-                case 3:
-                        r = base;
-                        g = (((val - base)*(60 - (hue % 60))) / 60) + base;
-                        b = val;
-                        break;
-
-                case 4:
-                        r = (((val - base)*(hue % 60)) / 60) + base;
-                        g = base;
-                        b = val;
-                        break;
-
-                case 5:
-                        r = val;
-                        g = base;
-                        b = (((val - base)*(60 - (hue % 60))) / 60) + base;
-                        break;
-                }
-        }
-  setrgb(r,g,b, led1);
+  uint8_t r = 0, g = 0, b = 0, base, color;
+
+  if (sat == 0) { // Acromatic color (gray). Hue doesn't mind.
+    r = val;
+    g = val;
+    b = val;
+  } else {
+    base = ((255 - sat) * val) >> 8;
+    color = (val - base) * (hue % 60) / 60;
+
+    switch (hue / 60) {
+      case 0:
+        r = val;
+        g = base + color;
+        b = base;
+        break;
+      case 1:
+        r = val - color;
+        g = val;
+        b = base;
+        break;
+      case 2:
+        r = base;
+        g = val;
+        b = base + color;
+        break;
+      case 3:
+        r = base;
+        g = val - color;
+        b = val;
+        break;
+      case 4:
+        r = base + color;
+        g = base;
+        b = val;
+        break;
+      case 5:
+        r = val;
+        g = base;
+        b = val - color;
+        break;
+    }
+  }
+  r = pgm_read_byte(&DIM_CURVE[r]);
+  g = pgm_read_byte(&DIM_CURVE[g]);
+  b = pgm_read_byte(&DIM_CURVE[b]);
+
+  setrgb(r, g, b, led1);
 }
 
 void setrgb(uint8_t r, uint8_t g, uint8_t b, struct cRGB *led1) {
@@ -107,46 +134,48 @@ void setrgb(uint8_t r, uint8_t g, uint8_t b, struct cRGB *led1) {
 uint32_t eeconfig_read_rgblight(void) {
   return eeprom_read_dword(EECONFIG_RGBLIGHT);
 }
-void eeconfig_write_rgblight(uint32_t val) {
-  eeprom_write_dword(EECONFIG_RGBLIGHT, val);
+void eeconfig_update_rgblight(uint32_t val) {
+  eeprom_update_dword(EECONFIG_RGBLIGHT, val);
 }
-void eeconfig_write_rgblight_default(void) {
-        dprintf("eeconfig_write_rgblight_default\n");
-        rgblight_config.enable = 1;
-        rgblight_config.mode = 1;
-        rgblight_config.hue = 200;
-        rgblight_config.sat = 204;
-        rgblight_config.val = 204;
-        eeconfig_write_rgblight(rgblight_config.raw);
+void eeconfig_update_rgblight_default(void) {
+  dprintf("eeconfig_update_rgblight_default\n");
+  rgblight_config.enable = 1;
+  rgblight_config.mode = 1;
+  rgblight_config.hue = 200;
+  rgblight_config.sat = 204;
+  rgblight_config.val = 204;
+  eeconfig_update_rgblight(rgblight_config.raw);
 }
 void eeconfig_debug_rgblight(void) {
-        dprintf("rgblight_config eprom\n");
-        dprintf("rgblight_config.enable = %d\n", rgblight_config.enable);
-        dprintf("rghlight_config.mode = %d\n", rgblight_config.mode);
-        dprintf("rgblight_config.hue = %d\n", rgblight_config.hue);
-        dprintf("rgblight_config.sat = %d\n", rgblight_config.sat);
-        dprintf("rgblight_config.val = %d\n", rgblight_config.val);
+  dprintf("rgblight_config eprom\n");
+  dprintf("rgblight_config.enable = %d\n", rgblight_config.enable);
+  dprintf("rghlight_config.mode = %d\n", rgblight_config.mode);
+  dprintf("rgblight_config.hue = %d\n", rgblight_config.hue);
+  dprintf("rgblight_config.sat = %d\n", rgblight_config.sat);
+  dprintf("rgblight_config.val = %d\n", rgblight_config.val);
 }
 
 void rgblight_init(void) {
   debug_enable = 1; // Debug ON!
-        dprintf("rgblight_init called.\n");
+  dprintf("rgblight_init called.\n");
   rgblight_inited = 1;
-        dprintf("rgblight_init start!\n");
+  dprintf("rgblight_init start!\n");
   if (!eeconfig_is_enabled()) {
-                dprintf("rgblight_init eeconfig is not enabled.\n");
+    dprintf("rgblight_init eeconfig is not enabled.\n");
     eeconfig_init();
-                eeconfig_write_rgblight_default();
+    eeconfig_update_rgblight_default();
   }
   rgblight_config.raw = eeconfig_read_rgblight();
-        if (!rgblight_config.mode) {
-                dprintf("rgblight_init rgblight_config.mode = 0. Write default values to EEPROM.\n");
-                eeconfig_write_rgblight_default();
-                rgblight_config.raw = eeconfig_read_rgblight();
-        }
-        eeconfig_debug_rgblight(); // display current eeprom values
+  if (!rgblight_config.mode) {
+    dprintf("rgblight_init rgblight_config.mode = 0. Write default values to EEPROM.\n");
+    eeconfig_update_rgblight_default();
+    rgblight_config.raw = eeconfig_read_rgblight();
+  }
+  eeconfig_debug_rgblight(); // display current eeprom values
 
-        rgblight_timer_init(); // setup the timer
+  #if !defined(AUDIO_ENABLE) && defined(RGBLIGHT_TIMER)
+    rgblight_timer_init(); // setup the timer
+  #endif
 
   if (rgblight_config.enable) {
     rgblight_mode(rgblight_config.mode);
@@ -154,352 +183,376 @@ void rgblight_init(void) {
 }
 
 void rgblight_increase(void) {
-        uint8_t mode;
+  uint8_t mode = 0;
   if (rgblight_config.mode < RGBLIGHT_MODES) {
     mode = rgblight_config.mode + 1;
   }
-        rgblight_mode(mode);
+  rgblight_mode(mode);
 }
-
 void rgblight_decrease(void) {
-        uint8_t mode;
-  if (rgblight_config.mode > 1) { //mode will never < 1, if mode is less than 1, eeprom need to be initialized.
-    mode = rgblight_config.mode-1;
+  uint8_t mode = 0;
+  // Mode will never be < 1. If it ever is, eeprom needs to be initialized.
+  if (rgblight_config.mode > 1) {
+    mode = rgblight_config.mode - 1;
   }
-        rgblight_mode(mode);
+  rgblight_mode(mode);
 }
-
 void rgblight_step(void) {
-        uint8_t mode;
+  uint8_t mode = 0;
   mode = rgblight_config.mode + 1;
   if (mode > RGBLIGHT_MODES) {
     mode = 1;
   }
-        rgblight_mode(mode);
+  rgblight_mode(mode);
 }
 
 void rgblight_mode(uint8_t mode) {
-        if (!rgblight_config.enable) {
-                return;
-        }
-  if (mode<1) {
-                rgblight_config.mode = 1;
-        } else if (mode > RGBLIGHT_MODES) {
-                rgblight_config.mode = RGBLIGHT_MODES;
-        } else {
-                rgblight_config.mode = mode;
-        }
-  eeconfig_write_rgblight(rgblight_config.raw);
-  dprintf("rgblight mode: %u\n", rgblight_config.mode);
-        if (rgblight_config.mode == 1) {
-                rgblight_timer_disable();
-        } else if (rgblight_config.mode >=2 && rgblight_config.mode <=23) {
-                // MODE 2-5, breathing
-                // MODE 6-8, rainbow mood
-                // MODE 9-14, rainbow swirl
-                // MODE 15-20, snake
-                // MODE 21-23, knight
-                rgblight_timer_enable();
-        }
+  if (!rgblight_config.enable) {
+    return;
+  }
+  if (mode < 1) {
+    rgblight_config.mode = 1;
+  } else if (mode > RGBLIGHT_MODES) {
+    rgblight_config.mode = RGBLIGHT_MODES;
+  } else {
+    rgblight_config.mode = mode;
+  }
+  eeconfig_update_rgblight(rgblight_config.raw);
+  xprintf("rgblight mode: %u\n", rgblight_config.mode);
+  if (rgblight_config.mode == 1) {
+    #if !defined(AUDIO_ENABLE) && defined(RGBLIGHT_TIMER)
+      rgblight_timer_disable();
+    #endif
+  } else if (rgblight_config.mode >= 2 && rgblight_config.mode <= 23) {
+    // MODE 2-5, breathing
+    // MODE 6-8, rainbow mood
+    // MODE 9-14, rainbow swirl
+    // MODE 15-20, snake
+    // MODE 21-23, knight
+
+    #if !defined(AUDIO_ENABLE) && defined(RGBLIGHT_TIMER)
+      rgblight_timer_enable();
+    #endif
+  }
   rgblight_sethsv(rgblight_config.hue, rgblight_config.sat, rgblight_config.val);
 }
 
 void rgblight_toggle(void) {
   rgblight_config.enable ^= 1;
-  eeconfig_write_rgblight(rgblight_config.raw);
-  dprintf("rgblight toggle: rgblight_config.enable = %u\n", rgblight_config.enable);
-        if (rgblight_config.enable) {
-                rgblight_mode(rgblight_config.mode);
-        } else {
-                rgblight_timer_disable();
-                _delay_ms(50);
-                rgblight_set();
-        }
+  eeconfig_update_rgblight(rgblight_config.raw);
+  xprintf("rgblight toggle: rgblight_config.enable = %u\n", rgblight_config.enable);
+  if (rgblight_config.enable) {
+    rgblight_mode(rgblight_config.mode);
+  } else {
+    #if !defined(AUDIO_ENABLE) && defined(RGBLIGHT_TIMER)
+      rgblight_timer_disable();
+    #endif
+    _delay_ms(50);
+    rgblight_set();
+  }
 }
 
 
-void rgblight_increase_hue(void){
-        uint16_t hue;
+void rgblight_increase_hue(void) {
+  uint16_t hue;
   hue = (rgblight_config.hue+RGBLIGHT_HUE_STEP) % 360;
   rgblight_sethsv(hue, rgblight_config.sat, rgblight_config.val);
 }
-void rgblight_decrease_hue(void){
-        uint16_t hue;
-        if (rgblight_config.hue-RGBLIGHT_HUE_STEP <0 ) {
-                hue = (rgblight_config.hue+360-RGBLIGHT_HUE_STEP) % 360;
-        } else {
-                hue = (rgblight_config.hue-RGBLIGHT_HUE_STEP) % 360;
-        }
+void rgblight_decrease_hue(void) {
+  uint16_t hue;
+  if (rgblight_config.hue-RGBLIGHT_HUE_STEP < 0) {
+    hue = (rgblight_config.hue + 360 - RGBLIGHT_HUE_STEP) % 360;
+  } else {
+    hue = (rgblight_config.hue - RGBLIGHT_HUE_STEP) % 360;
+  }
   rgblight_sethsv(hue, rgblight_config.sat, rgblight_config.val);
 }
 void rgblight_increase_sat(void) {
-        uint8_t sat;
+  uint8_t sat;
   if (rgblight_config.sat + RGBLIGHT_SAT_STEP > 255) {
     sat = 255;
   } else {
-    sat = rgblight_config.sat+RGBLIGHT_SAT_STEP;
+    sat = rgblight_config.sat + RGBLIGHT_SAT_STEP;
   }
   rgblight_sethsv(rgblight_config.hue, sat, rgblight_config.val);
 }
-void rgblight_decrease_sat(void){
-        uint8_t sat;
+void rgblight_decrease_sat(void) {
+  uint8_t sat;
   if (rgblight_config.sat - RGBLIGHT_SAT_STEP < 0) {
     sat = 0;
   } else {
-    sat = rgblight_config.sat-RGBLIGHT_SAT_STEP;
+    sat = rgblight_config.sat - RGBLIGHT_SAT_STEP;
   }
   rgblight_sethsv(rgblight_config.hue, sat, rgblight_config.val);
 }
-void rgblight_increase_val(void){
-        uint8_t val;
+void rgblight_increase_val(void) {
+  uint8_t val;
   if (rgblight_config.val + RGBLIGHT_VAL_STEP > 255) {
     val = 255;
   } else {
-    val = rgblight_config.val+RGBLIGHT_VAL_STEP;
+    val = rgblight_config.val + RGBLIGHT_VAL_STEP;
   }
   rgblight_sethsv(rgblight_config.hue, rgblight_config.sat, val);
 }
 void rgblight_decrease_val(void) {
-        uint8_t val;
+  uint8_t val;
   if (rgblight_config.val - RGBLIGHT_VAL_STEP < 0) {
     val = 0;
   } else {
-    val = rgblight_config.val-RGBLIGHT_VAL_STEP;
+    val = rgblight_config.val - RGBLIGHT_VAL_STEP;
   }
   rgblight_sethsv(rgblight_config.hue, rgblight_config.sat, val);
 }
 
-void rgblight_sethsv_noeeprom(uint16_t hue, uint8_t sat, uint8_t val){
-        inmem_config.raw = rgblight_config.raw;
+void rgblight_sethsv_noeeprom(uint16_t hue, uint8_t sat, uint8_t val) {
+  inmem_config.raw = rgblight_config.raw;
   if (rgblight_config.enable) {
     struct cRGB tmp_led;
     sethsv(hue, sat, val, &tmp_led);
-                inmem_config.hue = hue;
-                inmem_config.sat = sat;
-                inmem_config.val = val;
+    inmem_config.hue = hue;
+    inmem_config.sat = sat;
+    inmem_config.val = val;
     // dprintf("rgblight set hue [MEMORY]: %u,%u,%u\n", inmem_config.hue, inmem_config.sat, inmem_config.val);
     rgblight_setrgb(tmp_led.r, tmp_led.g, tmp_led.b);
   }
 }
-void rgblight_sethsv(uint16_t hue, uint8_t sat, uint8_t val){
+void rgblight_sethsv(uint16_t hue, uint8_t sat, uint8_t val) {
   if (rgblight_config.enable) {
-                if (rgblight_config.mode == 1) {
-                        // same static color
-                        rgblight_sethsv_noeeprom(hue, sat, val);
-                } else {
-                        // all LEDs in same color
-                        if (rgblight_config.mode >= 2 && rgblight_config.mode <= 5) {
-                                // breathing mode, ignore the change of val, use in memory value instead
-                                val = rgblight_config.val;
-                        } else if (rgblight_config.mode >= 6 && rgblight_config.mode <= 14) {
-                                // rainbow mood and rainbow swirl, ignore the change of hue
-                                hue = rgblight_config.hue;
-                        }
-                }
-                rgblight_config.hue = hue;
-                rgblight_config.sat = sat;
-                rgblight_config.val = val;
-                eeconfig_write_rgblight(rgblight_config.raw);
-                dprintf("rgblight set hsv [EEPROM]: %u,%u,%u\n", rgblight_config.hue, rgblight_config.sat, rgblight_config.val);
-  }
-}
-
-void rgblight_setrgb(uint8_t r, uint8_t g, uint8_t b){
+    if (rgblight_config.mode == 1) {
+      // same static color
+      rgblight_sethsv_noeeprom(hue, sat, val);
+    } else {
+      // all LEDs in same color
+      if (rgblight_config.mode >= 2 && rgblight_config.mode <= 5) {
+        // breathing mode, ignore the change of val, use in memory value instead
+        val = rgblight_config.val;
+      } else if (rgblight_config.mode >= 6 && rgblight_config.mode <= 14) {
+        // rainbow mood and rainbow swirl, ignore the change of hue
+        hue = rgblight_config.hue;
+      }
+    }
+    rgblight_config.hue = hue;
+    rgblight_config.sat = sat;
+    rgblight_config.val = val;
+    eeconfig_update_rgblight(rgblight_config.raw);
+    xprintf("rgblight set hsv [EEPROM]: %u,%u,%u\n", rgblight_config.hue, rgblight_config.sat, rgblight_config.val);
+  }
+}
+
+void rgblight_setrgb(uint8_t r, uint8_t g, uint8_t b) {
   // dprintf("rgblight set rgb: %u,%u,%u\n", r,g,b);
-  for (uint8_t i=0;i<RGBLED_NUM;i++) {
+  for (uint8_t i = 0; i < RGBLED_NUM; i++) {
     led[i].r = r;
     led[i].g = g;
     led[i].b = b;
   }
   rgblight_set();
-
 }
 
 void rgblight_set(void) {
-        if (rgblight_config.enable) {
-                ws2812_setleds(led, RGBLED_NUM);
-        } else {
-                for (uint8_t i=0;i<RGBLED_NUM;i++) {
-            led[i].r = 0;
-            led[i].g = 0;
-            led[i].b = 0;
-          }
-                ws2812_setleds(led, RGBLED_NUM);
-        }
+  if (rgblight_config.enable) {
+    ws2812_setleds(led, RGBLED_NUM);
+  } else {
+    for (uint8_t i = 0; i < RGBLED_NUM; i++) {
+      led[i].r = 0;
+      led[i].g = 0;
+      led[i].b = 0;
+    }
+    ws2812_setleds(led, RGBLED_NUM);
+  }
 }
 
+#if !defined(AUDIO_ENABLE) && defined(RGBLIGHT_TIMER)
+
 // Animation timer -- AVR Timer3
 void rgblight_timer_init(void) {
-        static uint8_t rgblight_timer_is_init = 0;
-        if (rgblight_timer_is_init) {
-                return;
-        }
-        rgblight_timer_is_init = 1;
-        /* Timer 3 setup */
-        TCCR3B = _BV(WGM32) //CTC mode OCR3A as TOP
-              | _BV(CS30); //Clock selelct: clk/1
-        /* Set TOP value */
-        uint8_t sreg = SREG;
-        cli();
-        OCR3AH = (RGBLED_TIMER_TOP>>8)&0xff;
-        OCR3AL = RGBLED_TIMER_TOP&0xff;
-        SREG = sreg;
+  static uint8_t rgblight_timer_is_init = 0;
+  if (rgblight_timer_is_init) {
+    return;
+  }
+  rgblight_timer_is_init = 1;
+  /* Timer 3 setup */
+  TCCR3B = _BV(WGM32) //CTC mode OCR3A as TOP
+        | _BV(CS30); //Clock selelct: clk/1
+  /* Set TOP value */
+  uint8_t sreg = SREG;
+  cli();
+  OCR3AH = (RGBLED_TIMER_TOP >> 8) & 0xff;
+  OCR3AL = RGBLED_TIMER_TOP & 0xff;
+  SREG = sreg;
 }
 void rgblight_timer_enable(void) {
-        TIMSK3 |= _BV(OCIE3A);
-        dprintf("TIMER3 enabled.\n");
+  TIMSK3 |= _BV(OCIE3A);
+  dprintf("TIMER3 enabled.\n");
 }
 void rgblight_timer_disable(void) {
-        TIMSK3 &= ~_BV(OCIE3A);
-        dprintf("TIMER3 disabled.\n");
+  TIMSK3 &= ~_BV(OCIE3A);
+  dprintf("TIMER3 disabled.\n");
 }
 void rgblight_timer_toggle(void) {
-        TIMSK3 ^= _BV(OCIE3A);
-        dprintf("TIMER3 toggled.\n");
+  TIMSK3 ^= _BV(OCIE3A);
+  dprintf("TIMER3 toggled.\n");
 }
 
 ISR(TIMER3_COMPA_vect) {
-        // Mode = 1, static light, do nothing here
-        if (rgblight_config.mode>=2 && rgblight_config.mode<=5) {
-                // mode = 2 to 5, breathing mode
-                rgblight_effect_breathing(rgblight_config.mode-2);
-
-        } else if (rgblight_config.mode>=6 && rgblight_config.mode<=8) {
-                rgblight_effect_rainbow_mood(rgblight_config.mode-6);
-        } else if (rgblight_config.mode>=9 && rgblight_config.mode<=14) {
-                rgblight_effect_rainbow_swirl(rgblight_config.mode-9);
-        } else if (rgblight_config.mode>=15 && rgblight_config.mode<=20) {
-                rgblight_effect_snake(rgblight_config.mode-15);
-        } else if (rgblight_config.mode>=21 && rgblight_config.mode<=23) {
-                rgblight_effect_knight(rgblight_config.mode-21);
-        }
-}
-
-// effects
+  // mode = 1, static light, do nothing here
+  if (rgblight_config.mode >= 2 && rgblight_config.mode <= 5) {
+    // mode = 2 to 5, breathing mode
+    rgblight_effect_breathing(rgblight_config.mode - 2);
+  } else if (rgblight_config.mode >= 6 && rgblight_config.mode <= 8) {
+    // mode = 6 to 8, rainbow mood mod
+    rgblight_effect_rainbow_mood(rgblight_config.mode - 6);
+  } else if (rgblight_config.mode >= 9 && rgblight_config.mode <= 14) {
+    // mode = 9 to 14, rainbow swirl mode
+    rgblight_effect_rainbow_swirl(rgblight_config.mode - 9);
+  } else if (rgblight_config.mode >= 15 && rgblight_config.mode <= 20) {
+    // mode = 15 to 20, snake mode
+    rgblight_effect_snake(rgblight_config.mode - 15);
+  } else if (rgblight_config.mode >= 21 && rgblight_config.mode <= 23) {
+    // mode = 21 to 23, knight mode
+    rgblight_effect_knight(rgblight_config.mode - 21);
+  }
+}
+
+// Effects
 void rgblight_effect_breathing(uint8_t interval) {
-        static uint8_t pos = 0;
-        static uint16_t last_timer = 0;
+  static uint8_t pos = 0;
+  static uint16_t last_timer = 0;
 
-        if (timer_elapsed(last_timer)<pgm_read_byte(&RGBLED_BREATHING_INTERVALS[interval])) return;
-        last_timer = timer_read();
+  if (timer_elapsed(last_timer) < pgm_read_byte(&RGBLED_BREATHING_INTERVALS[interval])) {
+    return;
+  }
+  last_timer = timer_read();
 
-        rgblight_sethsv_noeeprom(rgblight_config.hue, rgblight_config.sat, pgm_read_byte(&RGBLED_BREATHING_TABLE[pos]));
-        pos = (pos+1) % 256;
+  rgblight_sethsv_noeeprom(rgblight_config.hue, rgblight_config.sat, pgm_read_byte(&RGBLED_BREATHING_TABLE[pos]));
+  pos = (pos + 1) % 256;
 }
-
 void rgblight_effect_rainbow_mood(uint8_t interval) {
-        static uint16_t current_hue=0;
-        static uint16_t last_timer = 0;
+  static uint16_t current_hue = 0;
+  static uint16_t last_timer = 0;
 
-        if (timer_elapsed(last_timer)<pgm_read_byte(&RGBLED_RAINBOW_MOOD_INTERVALS[interval])) return;
-        last_timer = timer_read();
-        rgblight_sethsv_noeeprom(current_hue, rgblight_config.sat, rgblight_config.val);
-        current_hue = (current_hue+1) % 360;
+  if (timer_elapsed(last_timer) < pgm_read_byte(&RGBLED_RAINBOW_MOOD_INTERVALS[interval])) {
+    return;
+  }
+  last_timer = timer_read();
+  rgblight_sethsv_noeeprom(current_hue, rgblight_config.sat, rgblight_config.val);
+  current_hue = (current_hue + 1) % 360;
 }
-
 void rgblight_effect_rainbow_swirl(uint8_t interval) {
-        static uint16_t current_hue=0;
-        static uint16_t last_timer = 0;
-        uint16_t hue;
-        uint8_t i;
-        if (timer_elapsed(last_timer)<pgm_read_byte(&RGBLED_RAINBOW_MOOD_INTERVALS[interval/2])) return;
-        last_timer = timer_read();
-        for (i=0; i<RGBLED_NUM; i++) {
-                hue = (360/RGBLED_NUM*i+current_hue)%360;
-                sethsv(hue, rgblight_config.sat, rgblight_config.val, &led[i]);
-        }
-        rgblight_set();
-
-        if (interval % 2) {
-                current_hue = (current_hue+1) % 360;
-        } else {
-                if (current_hue -1 < 0) {
-                        current_hue = 359;
-                } else {
-                        current_hue = current_hue - 1;
-                }
-
-        }
+  static uint16_t current_hue = 0;
+  static uint16_t last_timer = 0;
+  uint16_t hue;
+  uint8_t i;
+  if (timer_elapsed(last_timer) < pgm_read_byte(&RGBLED_RAINBOW_MOOD_INTERVALS[interval / 2])) {
+    return;
+  }
+  last_timer = timer_read();
+  for (i = 0; i < RGBLED_NUM; i++) {
+    hue = (360 / RGBLED_NUM * i + current_hue) % 360;
+    sethsv(hue, rgblight_config.sat, rgblight_config.val, &led[i]);
+  }
+  rgblight_set();
+
+  if (interval % 2) {
+    current_hue = (current_hue + 1) % 360;
+  } else {
+    if (current_hue - 1 < 0) {
+      current_hue = 359;
+    } else {
+      current_hue = current_hue - 1;
+    }
+  }
 }
 void rgblight_effect_snake(uint8_t interval) {
-        static uint8_t pos=0;
-        static uint16_t last_timer = 0;
-        uint8_t i,j;
-        int8_t k;
-        int8_t increament = 1;
-        if (interval%2) increament = -1;
-        if (timer_elapsed(last_timer)<pgm_read_byte(&RGBLED_SNAKE_INTERVALS[interval/2])) return;
-        last_timer = timer_read();
-        for (i=0;i<RGBLED_NUM;i++) {
-                led[i].r=0;
-                led[i].g=0;
-                led[i].b=0;
-                for (j=0;j<RGBLIGHT_EFFECT_SNAKE_LENGTH;j++) {
-                        k = pos+j*increament;
-                        if (k<0) k = k+RGBLED_NUM;
-                        if (i==k) {
-                                sethsv(rgblight_config.hue, rgblight_config.sat, (uint8_t)(rgblight_config.val*(RGBLIGHT_EFFECT_SNAKE_LENGTH-j)/RGBLIGHT_EFFECT_SNAKE_LENGTH), &led[i]);
-                        }
-                }
-        }
-        rgblight_set();
-        if (increament == 1) {
-                if (pos - 1 < 0) {
-                        pos = RGBLED_NUM-1;
-                } else {
-                        pos -= 1;
-                }
-        } else {
-                pos = (pos+1)%RGBLED_NUM;
-        }
-
+  static uint8_t pos = 0;
+  static uint16_t last_timer = 0;
+  uint8_t i, j;
+  int8_t k;
+  int8_t increment = 1;
+  if (interval % 2) {
+    increment = -1;
+  }
+  if (timer_elapsed(last_timer) < pgm_read_byte(&RGBLED_SNAKE_INTERVALS[interval / 2])) {
+    return;
+  }
+  last_timer = timer_read();
+  for (i = 0; i < RGBLED_NUM; i++) {
+    led[i].r = 0;
+    led[i].g = 0;
+    led[i].b = 0;
+    for (j = 0; j < RGBLIGHT_EFFECT_SNAKE_LENGTH; j++) {
+      k = pos + j * increment;
+      if (k < 0) {
+        k = k + RGBLED_NUM;
+      }
+      if (i == k) {
+        sethsv(rgblight_config.hue, rgblight_config.sat, (uint8_t)(rgblight_config.val*(RGBLIGHT_EFFECT_SNAKE_LENGTH-j)/RGBLIGHT_EFFECT_SNAKE_LENGTH), &led[i]);
+      }
+    }
+  }
+  rgblight_set();
+  if (increment == 1) {
+    if (pos - 1 < 0) {
+      pos = RGBLED_NUM - 1;
+    } else {
+      pos -= 1;
+    }
+  } else {
+    pos = (pos + 1) % RGBLED_NUM;
+  }
 }
-
 void rgblight_effect_knight(uint8_t interval) {
-        static int8_t pos=0;
-        static uint16_t last_timer = 0;
-        uint8_t i,j,cur;
-        int8_t k;
-        struct cRGB preled[RGBLED_NUM];
-        static int8_t increament = -1;
-        if (timer_elapsed(last_timer)<pgm_read_byte(&RGBLED_KNIGHT_INTERVALS[interval])) return;
-        last_timer = timer_read();
-        for (i=0;i<RGBLED_NUM;i++) {
-                preled[i].r=0;
-                preled[i].g=0;
-                preled[i].b=0;
-                for (j=0;j<RGBLIGHT_EFFECT_KNIGHT_LENGTH;j++) {
-                        k = pos+j*increament;
-                        if (k<0) k = 0;
-                        if (k>=RGBLED_NUM) k=RGBLED_NUM-1;
-                        if (i==k) {
-                                sethsv(rgblight_config.hue, rgblight_config.sat, rgblight_config.val, &preled[i]);
-                        }
-                }
-        }
-        if (RGBLIGHT_EFFECT_KNIGHT_OFFSET) {
-                for (i=0;i<RGBLED_NUM;i++) {
-                        cur = (i+RGBLIGHT_EFFECT_KNIGHT_OFFSET) % RGBLED_NUM;
-                        led[i].r = preled[cur].r;
-                        led[i].g = preled[cur].g;
-                        led[i].b = preled[cur].b;
-                }
-        }
-        rgblight_set();
-        if (increament == 1) {
-                if (pos - 1 < 0 - RGBLIGHT_EFFECT_KNIGHT_LENGTH) {
-                        pos = 0- RGBLIGHT_EFFECT_KNIGHT_LENGTH;
-                        increament = -1;
-                } else {
-                        pos -= 1;
-                }
-        } else {
-                if (pos+1>RGBLED_NUM+RGBLIGHT_EFFECT_KNIGHT_LENGTH) {
-                        pos = RGBLED_NUM+RGBLIGHT_EFFECT_KNIGHT_LENGTH-1;
-                        increament = 1;
-                } else {
-                        pos += 1;
-                }
-        }
-
+  static int8_t pos = 0;
+  static uint16_t last_timer = 0;
+  uint8_t i, j, cur;
+  int8_t k;
+  struct cRGB preled[RGBLED_NUM];
+  static int8_t increment = -1;
+  if (timer_elapsed(last_timer) < pgm_read_byte(&RGBLED_KNIGHT_INTERVALS[interval])) {
+    return;
+  }
+  last_timer = timer_read();
+  for (i = 0; i < RGBLED_NUM; i++) {
+    preled[i].r = 0;
+    preled[i].g = 0;
+    preled[i].b = 0;
+    for (j = 0; j < RGBLIGHT_EFFECT_KNIGHT_LENGTH; j++) {
+      k = pos + j * increment;
+      if (k < 0) {
+        k = 0;
+      }
+      if (k >= RGBLED_NUM) {
+        k = RGBLED_NUM - 1;
+      }
+      if (i == k) {
+        sethsv(rgblight_config.hue, rgblight_config.sat, rgblight_config.val, &preled[i]);
+      }
+    }
+  }
+  if (RGBLIGHT_EFFECT_KNIGHT_OFFSET) {
+    for (i = 0; i < RGBLED_NUM; i++) {
+      cur = (i + RGBLIGHT_EFFECT_KNIGHT_OFFSET) % RGBLED_NUM;
+      led[i].r = preled[cur].r;
+      led[i].g = preled[cur].g;
+      led[i].b = preled[cur].b;
+    }
+  }
+  rgblight_set();
+  if (increment == 1) {
+    if (pos - 1 < 0 - RGBLIGHT_EFFECT_KNIGHT_LENGTH) {
+      pos = 0 - RGBLIGHT_EFFECT_KNIGHT_LENGTH;
+      increment = -1;
+    } else {
+      pos -= 1;
+    }
+  } else {
+    if (pos + 1 > RGBLED_NUM + RGBLIGHT_EFFECT_KNIGHT_LENGTH) {
+      pos = RGBLED_NUM + RGBLIGHT_EFFECT_KNIGHT_LENGTH - 1;
+      increment = 1;
+    } else {
+      pos += 1;
+    }
+  }
 }
+
+#endif
diff --git a/quantum/rgblight.h b/quantum/rgblight.h
index 9e1562328..17f04ffcf 100644
--- a/quantum/rgblight.h
+++ b/quantum/rgblight.h
@@ -1,8 +1,11 @@
 #ifndef RGBLIGHT_H
 #define RGBLIGHT_H
 
-#ifndef RGBLIGHT_MODES
-#define RGBLIGHT_MODES 23
+
+#if !defined(AUDIO_ENABLE) && defined(RGBLIGHT_TIMER)
+        #define RGBLIGHT_MODES 23
+#else
+        #define RGBLIGHT_MODES 1
 #endif
 
 #ifndef RGBLIGHT_EFFECT_SNAKE_LENGTH
@@ -37,6 +40,12 @@
 #include "eeconfig.h"
 #include "light_ws2812.h"
 
+extern const uint8_t RGBLED_BREATHING_INTERVALS[4] PROGMEM;
+extern const uint8_t RGBLED_RAINBOW_MOOD_INTERVALS[3] PROGMEM;
+extern const uint8_t RGBLED_RAINBOW_SWIRL_INTERVALS[3] PROGMEM;
+extern const uint8_t RGBLED_SNAKE_INTERVALS[3] PROGMEM;
+extern const uint8_t RGBLED_KNIGHT_INTERVALS[3] PROGMEM;
+
 typedef union {
   uint32_t raw;
   struct {
@@ -64,10 +73,9 @@ void rgblight_decrease_val(void);
 void rgblight_sethsv(uint16_t hue, uint8_t sat, uint8_t val);
 void rgblight_setrgb(uint8_t r, uint8_t g, uint8_t b);
 
-#define EECONFIG_RGBLIGHT (uint8_t *)7
 uint32_t eeconfig_read_rgblight(void);
-void eeconfig_write_rgblight(uint32_t val);
-void eeconfig_write_rgblight_default(void);
+void eeconfig_update_rgblight(uint32_t val);
+void eeconfig_update_rgblight_default(void);
 void eeconfig_debug_rgblight(void);
 
 void sethsv(uint16_t hue, uint8_t sat, uint8_t val, struct cRGB *led1);
diff --git a/quantum/serial_link/LICENSE b/quantum/serial_link/LICENSE
new file mode 100644
index 000000000..d7cc3198c
--- /dev/null
+++ b/quantum/serial_link/LICENSE
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2016 Fred Sundvik
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/quantum/serial_link/README.md b/quantum/serial_link/README.md
new file mode 100644
index 000000000..e8490e290
--- /dev/null
+++ b/quantum/serial_link/README.md
@@ -0,0 +1 @@
+# qmk_serial_link
\ No newline at end of file
diff --git a/quantum/serial_link/protocol/byte_stuffer.c b/quantum/serial_link/protocol/byte_stuffer.c
new file mode 100644
index 000000000..2c87d64c2
--- /dev/null
+++ b/quantum/serial_link/protocol/byte_stuffer.c
@@ -0,0 +1,142 @@
+/*
+The MIT License (MIT)
+
+Copyright (c) 2016 Fred Sundvik
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#include "serial_link/protocol/byte_stuffer.h"
+#include "serial_link/protocol/frame_validator.h"
+#include "serial_link/protocol/physical.h"
+#include <stdbool.h>
+
+// This implements the "Consistent overhead byte stuffing protocol"
+// https://en.wikipedia.org/wiki/Consistent_Overhead_Byte_Stuffing
+// http://www.stuartcheshire.org/papers/COBSforToN.pdf
+
+typedef struct byte_stuffer_state {
+    uint16_t next_zero;
+    uint16_t data_pos;
+    bool long_frame;
+    uint8_t data[MAX_FRAME_SIZE];
+}byte_stuffer_state_t;
+
+static byte_stuffer_state_t states[NUM_LINKS];
+
+void init_byte_stuffer_state(byte_stuffer_state_t* state) {
+    state->next_zero = 0;
+    state->data_pos = 0;
+    state->long_frame = false;
+}
+
+void init_byte_stuffer(void) {
+    int i;
+    for (i=0;i<NUM_LINKS;i++) {
+        init_byte_stuffer_state(&states[i]);
+    }
+}
+
+void byte_stuffer_recv_byte(uint8_t link, uint8_t data) {
+    byte_stuffer_state_t* state = &states[link];
+    // Start of a new frame
+    if (state->next_zero == 0) {
+        state->next_zero = data;
+        state->long_frame = data == 0xFF;
+        state->data_pos = 0;
+        return;
+    }
+
+    state->next_zero--;
+    if (data == 0) {
+        if (state->next_zero == 0) {
+            // The frame is completed
+            if (state->data_pos > 0) {
+                validator_recv_frame(link, state->data, state->data_pos);
+            }
+        }
+        else {
+            // The frame is invalid, so reset
+            init_byte_stuffer_state(state);
+        }
+    }
+    else {
+        if (state->data_pos == MAX_FRAME_SIZE) {
+            // We exceeded our maximum frame size
+            // therefore there's nothing else to do than reset to a new frame
+            state->next_zero = data;
+            state->long_frame = data == 0xFF;
+            state->data_pos = 0;
+        }
+        else if (state->next_zero == 0) {
+            if (state->long_frame) {
+                // This is part of a long frame, so continue
+                state->next_zero = data;
+                state->long_frame = data == 0xFF;
+            }
+            else {
+                // Special case for zeroes
+                state->next_zero = data;
+                state->data[state->data_pos++] = 0;
+            }
+        }
+        else {
+            state->data[state->data_pos++] = data;
+        }
+    }
+}
+
+static void send_block(uint8_t link, uint8_t* start, uint8_t* end, uint8_t num_non_zero) {
+    send_data(link, &num_non_zero, 1);
+    if (end > start) {
+        send_data(link, start, end-start);
+    }
+}
+
+void byte_stuffer_send_frame(uint8_t link, uint8_t* data, uint16_t size) {
+    const uint8_t zero = 0;
+    if (size > 0) {
+        uint16_t num_non_zero = 1;
+        uint8_t* end = data + size;
+        uint8_t* start = data;
+        while (data < end) {
+            if (num_non_zero == 0xFF) {
+                // There's more data after big non-zero block
+                // So send it, and start a new block
+                send_block(link, start, data, num_non_zero);
+                start = data;
+                num_non_zero = 1;
+            }
+            else {
+                if (*data == 0) {
+                    // A zero encountered, so send the block
+                    send_block(link, start, data, num_non_zero);
+                    start = data + 1;
+                    num_non_zero = 1;
+                }
+                else {
+                    num_non_zero++;
+                }
+                ++data;
+            }
+        }
+        send_block(link, start, data, num_non_zero);
+        send_data(link, &zero, 1);
+    }
+}
diff --git a/quantum/serial_link/protocol/byte_stuffer.h b/quantum/serial_link/protocol/byte_stuffer.h
new file mode 100644
index 000000000..97e896856
--- /dev/null
+++ b/quantum/serial_link/protocol/byte_stuffer.h
@@ -0,0 +1,37 @@
+/*
+The MIT License (MIT)
+
+Copyright (c) 2016 Fred Sundvik
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#ifndef SERIAL_LINK_BYTE_STUFFER_H
+#define SERIAL_LINK_BYTE_STUFFER_H
+
+#include <stdint.h>
+
+#define MAX_FRAME_SIZE 1024
+#define NUM_LINKS 2
+
+void init_byte_stuffer(void);
+void byte_stuffer_recv_byte(uint8_t link, uint8_t data);
+void byte_stuffer_send_frame(uint8_t link, uint8_t* data, uint16_t size);
+
+#endif
diff --git a/quantum/serial_link/protocol/frame_router.c b/quantum/serial_link/protocol/frame_router.c
new file mode 100644
index 000000000..04b8c2e75
--- /dev/null
+++ b/quantum/serial_link/protocol/frame_router.c
@@ -0,0 +1,69 @@
+/*
+The MIT License (MIT)
+
+Copyright (c) 2016 Fred Sundvik
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#include "serial_link/protocol/frame_router.h"
+#include "serial_link/protocol/transport.h"
+#include "serial_link/protocol/frame_validator.h"
+
+static bool is_master;
+
+void router_set_master(bool master) {
+   is_master = master;
+}
+
+void route_incoming_frame(uint8_t link, uint8_t* data, uint16_t size){
+    if (is_master) {
+        if (link == DOWN_LINK) {
+            transport_recv_frame(data[size-1], data, size - 1);
+        }
+    }
+    else {
+        if (link == UP_LINK) {
+            if (data[size-1] & 1) {
+                transport_recv_frame(0, data, size - 1);
+            }
+            data[size-1] >>= 1;
+            validator_send_frame(DOWN_LINK, data, size);
+        }
+        else {
+            data[size-1]++;
+            validator_send_frame(UP_LINK, data, size);
+        }
+    }
+}
+
+void router_send_frame(uint8_t destination, uint8_t* data, uint16_t size) {
+    if (destination == 0) {
+        if (!is_master) {
+            data[size] = 1;
+            validator_send_frame(UP_LINK, data, size + 1);
+        }
+    }
+    else {
+        if (is_master) {
+            data[size] = destination;
+            validator_send_frame(DOWN_LINK, data, size + 1);
+        }
+    }
+}
diff --git a/quantum/serial_link/protocol/frame_router.h b/quantum/serial_link/protocol/frame_router.h
new file mode 100644
index 000000000..712250ff3
--- /dev/null
+++ b/quantum/serial_link/protocol/frame_router.h
@@ -0,0 +1,38 @@
+/*
+The MIT License (MIT)
+
+Copyright (c) 2016 Fred Sundvik
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#ifndef SERIAL_LINK_FRAME_ROUTER_H
+#define SERIAL_LINK_FRAME_ROUTER_H
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#define UP_LINK 0
+#define DOWN_LINK 1
+
+void router_set_master(bool master);
+void route_incoming_frame(uint8_t link, uint8_t* data, uint16_t size);
+void router_send_frame(uint8_t destination, uint8_t* data, uint16_t size);
+
+#endif
diff --git a/quantum/serial_link/protocol/frame_validator.c b/quantum/serial_link/protocol/frame_validator.c
new file mode 100644
index 000000000..474f80ee8
--- /dev/null
+++ b/quantum/serial_link/protocol/frame_validator.c
@@ -0,0 +1,121 @@
+/*
+The MIT License (MIT)
+
+Copyright (c) 2016 Fred Sundvik
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#include "serial_link/protocol/frame_validator.h"
+#include "serial_link/protocol/frame_router.h"
+#include "serial_link/protocol/byte_stuffer.h"
+#include <string.h>
+
+const uint32_t poly8_lookup[256] =
+{
+ 0, 0x77073096, 0xEE0E612C, 0x990951BA,
+ 0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3,
+ 0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988,
+ 0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91,
+ 0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE,
+ 0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7,
+ 0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC,
+ 0x14015C4F, 0x63066CD9, 0xFA0F3D63, 0x8D080DF5,
+ 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172,
+ 0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B,
+ 0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940,
+ 0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59,
+ 0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116,
+ 0x21B4F4B5, 0x56B3C423, 0xCFBA9599, 0xB8BDA50F,
+ 0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924,
+ 0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D,
+ 0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A,
+ 0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433,
+ 0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818,
+ 0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01,
+ 0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E,
+ 0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457,
+ 0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA, 0xFCB9887C,
+ 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65,
+ 0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2,
+ 0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB,
+ 0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0,
+ 0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9,
+ 0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086,
+ 0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F,
+ 0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4,
+ 0x59B33D17, 0x2EB40D81, 0xB7BD5C3B, 0xC0BA6CAD,
+ 0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A,
+ 0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683,
+ 0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8,
+ 0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1,
+ 0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE,
+ 0xF762575D, 0x806567CB, 0x196C3671, 0x6E6B06E7,
+ 0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC,
+ 0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5,
+ 0xD6D6A3E8, 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252,
+ 0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B,
+ 0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60,
+ 0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79,
+ 0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236,
+ 0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F,
+ 0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04,
+ 0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D,
+ 0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A,
+ 0x9C0906A9, 0xEB0E363F, 0x72076785, 0x05005713,
+ 0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38,
+ 0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21,
+ 0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E,
+ 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777,
+ 0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C,
+ 0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45,
+ 0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2,
+ 0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB,
+ 0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0,
+ 0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9,
+ 0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6,
+ 0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF,
+ 0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94,
+ 0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D
+};
+
+static uint32_t crc32_byte(uint8_t *p, uint32_t bytelength)
+{
+    uint32_t crc = 0xffffffff;
+    while (bytelength-- !=0) crc = poly8_lookup[((uint8_t) crc ^ *(p++))] ^ (crc >> 8);
+    // return (~crc); also works
+    return (crc ^ 0xffffffff);
+}
+
+void validator_recv_frame(uint8_t link, uint8_t* data, uint16_t size) {
+    if (size > 4) {
+        uint32_t frame_crc;
+        memcpy(&frame_crc, data + size -4, 4);
+        uint32_t expected_crc = crc32_byte(data, size - 4);
+        if (frame_crc == expected_crc) {
+            route_incoming_frame(link, data, size-4);
+        }
+    }
+}
+
+void validator_send_frame(uint8_t link, uint8_t* data, uint16_t size) {
+    uint32_t crc = crc32_byte(data, size);
+    memcpy(data + size, &crc, 4);
+    byte_stuffer_send_frame(link, data, size + 4);
+}
diff --git a/quantum/serial_link/protocol/frame_validator.h b/quantum/serial_link/protocol/frame_validator.h
new file mode 100644
index 000000000..4a910d510
--- /dev/null
+++ b/quantum/serial_link/protocol/frame_validator.h
@@ -0,0 +1,34 @@
+/*
+The MIT License (MIT)
+
+Copyright (c) 2016 Fred Sundvik
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#ifndef SERIAL_LINK_FRAME_VALIDATOR_H
+#define SERIAL_LINK_FRAME_VALIDATOR_H
+
+#include <stdint.h>
+
+void validator_recv_frame(uint8_t link, uint8_t* data, uint16_t size);
+// The buffer pointed to by the data needs 4 additional bytes
+void validator_send_frame(uint8_t link, uint8_t* data, uint16_t size);
+
+#endif
diff --git a/quantum/serial_link/protocol/physical.h b/quantum/serial_link/protocol/physical.h
new file mode 100644
index 000000000..425e06cdd
--- /dev/null
+++ b/quantum/serial_link/protocol/physical.h
@@ -0,0 +1,30 @@
+/*
+The MIT License (MIT)
+
+Copyright (c) 2016 Fred Sundvik
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#ifndef SERIAL_LINK_PHYSICAL_H
+#define SERIAL_LINK_PHYSICAL_H
+
+void send_data(uint8_t link, const uint8_t* data, uint16_t size);
+
+#endif
diff --git a/quantum/serial_link/protocol/transport.c b/quantum/serial_link/protocol/transport.c
new file mode 100644
index 000000000..ff795fe20
--- /dev/null
+++ b/quantum/serial_link/protocol/transport.c
@@ -0,0 +1,128 @@
+/*
+The MIT License (MIT)
+
+Copyright (c) 2016 Fred Sundvik
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#include "serial_link/protocol/transport.h"
+#include "serial_link/protocol/frame_router.h"
+#include "serial_link/protocol/triple_buffered_object.h"
+#include <string.h>
+
+#define MAX_REMOTE_OBJECTS 16
+static remote_object_t* remote_objects[MAX_REMOTE_OBJECTS];
+static uint32_t num_remote_objects = 0;
+
+void reinitialize_serial_link_transport(void) {
+    num_remote_objects = 0;
+}
+
+void add_remote_objects(remote_object_t** _remote_objects, uint32_t _num_remote_objects) {
+    unsigned int i;
+    for(i=0;i<_num_remote_objects;i++) {
+        remote_object_t* obj = _remote_objects[i];
+        remote_objects[num_remote_objects++] = obj;
+        if (obj->object_type == MASTER_TO_ALL_SLAVES) {
+            triple_buffer_object_t* tb = (triple_buffer_object_t*)obj->buffer;
+            triple_buffer_init(tb);
+            uint8_t* start = obj->buffer + LOCAL_OBJECT_SIZE(obj->object_size);
+            tb = (triple_buffer_object_t*)start;
+            triple_buffer_init(tb);
+        }
+        else if(obj->object_type == MASTER_TO_SINGLE_SLAVE) {
+            uint8_t* start = obj->buffer;
+            unsigned int j;
+            for (j=0;j<NUM_SLAVES;j++) {
+                triple_buffer_object_t* tb = (triple_buffer_object_t*)start;
+                triple_buffer_init(tb);
+                start += LOCAL_OBJECT_SIZE(obj->object_size);
+            }
+            triple_buffer_object_t* tb = (triple_buffer_object_t*)start;
+            triple_buffer_init(tb);
+        }
+        else {
+            uint8_t* start = obj->buffer;
+            triple_buffer_object_t* tb = (triple_buffer_object_t*)start;
+            triple_buffer_init(tb);
+            start += LOCAL_OBJECT_SIZE(obj->object_size);
+            unsigned int j;
+            for (j=0;j<NUM_SLAVES;j++) {
+                tb = (triple_buffer_object_t*)start;
+                triple_buffer_init(tb);
+                start += REMOTE_OBJECT_SIZE(obj->object_size);
+            }
+        }
+    }
+}
+
+void transport_recv_frame(uint8_t from, uint8_t* data, uint16_t size) {
+    uint8_t id = data[size-1];
+    if (id < num_remote_objects) {
+        remote_object_t* obj = remote_objects[id];
+        if (obj->object_size == size - 1) {
+            uint8_t* start;
+            if (obj->object_type == MASTER_TO_ALL_SLAVES) {
+                start = obj->buffer + LOCAL_OBJECT_SIZE(obj->object_size);
+            }
+            else if(obj->object_type == SLAVE_TO_MASTER) {
+                start = obj->buffer + LOCAL_OBJECT_SIZE(obj->object_size);
+                start += (from - 1) * REMOTE_OBJECT_SIZE(obj->object_size);
+            }
+            else {
+                start = obj->buffer + NUM_SLAVES * LOCAL_OBJECT_SIZE(obj->object_size);
+            }
+            triple_buffer_object_t* tb = (triple_buffer_object_t*)start;
+            void* ptr = triple_buffer_begin_write_internal(obj->object_size, tb);
+            memcpy(ptr, data, size - 1);
+            triple_buffer_end_write_internal(tb);
+        }
+    }
+}
+
+void update_transport(void) {
+    unsigned int i;
+    for(i=0;i<num_remote_objects;i++) {
+        remote_object_t* obj = remote_objects[i];
+        if (obj->object_type == MASTER_TO_ALL_SLAVES || obj->object_type == SLAVE_TO_MASTER) {
+            triple_buffer_object_t* tb = (triple_buffer_object_t*)obj->buffer;
+            uint8_t* ptr = (uint8_t*)triple_buffer_read_internal(obj->object_size + LOCAL_OBJECT_EXTRA, tb);
+            if (ptr) {
+                ptr[obj->object_size] = i;
+                uint8_t dest = obj->object_type == MASTER_TO_ALL_SLAVES ? 0xFF : 0;
+                router_send_frame(dest, ptr, obj->object_size + 1);
+            }
+        }
+        else {
+            uint8_t* start = obj->buffer;
+            unsigned int j;
+            for (j=0;j<NUM_SLAVES;j++) {
+                triple_buffer_object_t* tb = (triple_buffer_object_t*)start;
+                uint8_t* ptr = (uint8_t*)triple_buffer_read_internal(obj->object_size + LOCAL_OBJECT_EXTRA, tb);
+                if (ptr) {
+                    ptr[obj->object_size] = i;
+                    uint8_t dest = j + 1;
+                    router_send_frame(dest, ptr, obj->object_size + 1);
+                }
+                start += LOCAL_OBJECT_SIZE(obj->object_size);
+            }
+        }
+    }
+}
diff --git a/quantum/serial_link/protocol/transport.h b/quantum/serial_link/protocol/transport.h
new file mode 100644
index 000000000..2c5d890b2
--- /dev/null
+++ b/quantum/serial_link/protocol/transport.h
@@ -0,0 +1,152 @@
+/*
+The MIT License (MIT)
+
+Copyright (c) 2016 Fred Sundvik
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#ifndef SERIAL_LINK_TRANSPORT_H
+#define SERIAL_LINK_TRANSPORT_H
+
+#include "serial_link/protocol/triple_buffered_object.h"
+#include "serial_link/system/serial_link.h"
+
+#define NUM_SLAVES 8
+#define LOCAL_OBJECT_EXTRA 16
+
+// master -> slave = 1 local(target all), 1 remote object
+// slave -> master = 1 local(target 0), multiple remote objects
+// master -> single slave (multiple local, target id), 1 remote object
+typedef enum {
+    MASTER_TO_ALL_SLAVES,
+    MASTER_TO_SINGLE_SLAVE,
+    SLAVE_TO_MASTER,
+} remote_object_type;
+
+typedef struct {
+    remote_object_type object_type;
+    uint16_t object_size;
+    uint8_t buffer[] __attribute__((aligned(4)));
+} remote_object_t;
+
+#define REMOTE_OBJECT_SIZE(objectsize) \
+    (sizeof(triple_buffer_object_t) + objectsize * 3)
+#define LOCAL_OBJECT_SIZE(objectsize) \
+    (sizeof(triple_buffer_object_t) + (objectsize + LOCAL_OBJECT_EXTRA) * 3)
+
+#define REMOTE_OBJECT_HELPER(name, type, num_local, num_remote) \
+typedef struct { \
+    remote_object_t object; \
+    uint8_t buffer[ \
+        num_remote * REMOTE_OBJECT_SIZE(sizeof(type)) + \
+        num_local * LOCAL_OBJECT_SIZE(sizeof(type))]; \
+} remote_object_##name##_t;
+
+#define MASTER_TO_ALL_SLAVES_OBJECT(name, type) \
+    REMOTE_OBJECT_HELPER(name, type, 1, 1) \
+    remote_object_##name##_t remote_object_##name = { \
+        .object = { \
+            .object_type = MASTER_TO_ALL_SLAVES, \
+            .object_size = sizeof(type), \
+        } \
+    }; \
+    type* begin_write_##name(void) { \
+        remote_object_t* obj = (remote_object_t*)&remote_object_##name; \
+        triple_buffer_object_t* tb = (triple_buffer_object_t*)obj->buffer; \
+        return (type*)triple_buffer_begin_write_internal(sizeof(type) + LOCAL_OBJECT_EXTRA, tb); \
+    }\
+    void end_write_##name(void) { \
+        remote_object_t* obj = (remote_object_t*)&remote_object_##name; \
+        triple_buffer_object_t* tb = (triple_buffer_object_t*)obj->buffer; \
+        triple_buffer_end_write_internal(tb); \
+        signal_data_written(); \
+    }\
+    type* read_##name(void) { \
+        remote_object_t* obj = (remote_object_t*)&remote_object_##name; \
+        uint8_t* start = obj->buffer + LOCAL_OBJECT_SIZE(obj->object_size);\
+        triple_buffer_object_t* tb = (triple_buffer_object_t*)start; \
+        return (type*)triple_buffer_read_internal(obj->object_size, tb); \
+    }
+
+#define MASTER_TO_SINGLE_SLAVE_OBJECT(name, type) \
+    REMOTE_OBJECT_HELPER(name, type, NUM_SLAVES, 1) \
+    remote_object_##name##_t remote_object_##name = { \
+        .object = { \
+            .object_type = MASTER_TO_SINGLE_SLAVE, \
+            .object_size = sizeof(type), \
+        } \
+    }; \
+    type* begin_write_##name(uint8_t slave) { \
+        remote_object_t* obj = (remote_object_t*)&remote_object_##name; \
+        uint8_t* start = obj->buffer;\
+        start += slave * LOCAL_OBJECT_SIZE(obj->object_size); \
+        triple_buffer_object_t* tb = (triple_buffer_object_t*)start; \
+        return (type*)triple_buffer_begin_write_internal(sizeof(type) + LOCAL_OBJECT_EXTRA, tb); \
+    }\
+    void end_write_##name(uint8_t slave) { \
+        remote_object_t* obj = (remote_object_t*)&remote_object_##name; \
+        uint8_t* start = obj->buffer;\
+        start += slave * LOCAL_OBJECT_SIZE(obj->object_size); \
+        triple_buffer_object_t* tb = (triple_buffer_object_t*)start; \
+        triple_buffer_end_write_internal(tb); \
+        signal_data_written(); \
+    }\
+    type* read_##name() { \
+        remote_object_t* obj = (remote_object_t*)&remote_object_##name; \
+        uint8_t* start = obj->buffer + NUM_SLAVES * LOCAL_OBJECT_SIZE(obj->object_size);\
+        triple_buffer_object_t* tb = (triple_buffer_object_t*)start; \
+        return (type*)triple_buffer_read_internal(obj->object_size, tb); \
+    }
+
+#define SLAVE_TO_MASTER_OBJECT(name, type) \
+    REMOTE_OBJECT_HELPER(name, type, 1, NUM_SLAVES) \
+    remote_object_##name##_t remote_object_##name = { \
+        .object = { \
+            .object_type = SLAVE_TO_MASTER, \
+            .object_size = sizeof(type), \
+        } \
+    }; \
+    type* begin_write_##name(void) { \
+        remote_object_t* obj = (remote_object_t*)&remote_object_##name; \
+        triple_buffer_object_t* tb = (triple_buffer_object_t*)obj->buffer; \
+        return (type*)triple_buffer_begin_write_internal(sizeof(type) + LOCAL_OBJECT_EXTRA, tb); \
+    }\
+    void end_write_##name(void) { \
+        remote_object_t* obj = (remote_object_t*)&remote_object_##name; \
+        triple_buffer_object_t* tb = (triple_buffer_object_t*)obj->buffer; \
+        triple_buffer_end_write_internal(tb); \
+        signal_data_written(); \
+    }\
+    type* read_##name(uint8_t slave) { \
+        remote_object_t* obj = (remote_object_t*)&remote_object_##name; \
+        uint8_t* start = obj->buffer + LOCAL_OBJECT_SIZE(obj->object_size);\
+        start+=slave * REMOTE_OBJECT_SIZE(obj->object_size); \
+        triple_buffer_object_t* tb = (triple_buffer_object_t*)start; \
+        return (type*)triple_buffer_read_internal(obj->object_size, tb); \
+    }
+
+#define REMOTE_OBJECT(name) (remote_object_t*)&remote_object_##name
+
+void add_remote_objects(remote_object_t** remote_objects, uint32_t num_remote_objects);
+void reinitialize_serial_link_transport(void);
+void transport_recv_frame(uint8_t from, uint8_t* data, uint16_t size);
+void update_transport(void);
+
+#endif
diff --git a/quantum/serial_link/protocol/triple_buffered_object.c b/quantum/serial_link/protocol/triple_buffered_object.c
new file mode 100644
index 000000000..e3e8989d3
--- /dev/null
+++ b/quantum/serial_link/protocol/triple_buffered_object.c
@@ -0,0 +1,78 @@
+/*
+The MIT License (MIT)
+
+Copyright (c) 2016 Fred Sundvik
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#include "serial_link/protocol/triple_buffered_object.h"
+#include "serial_link/system/serial_link.h"
+#include <stdbool.h>
+#include <stddef.h>
+
+#define GET_READ_INDEX() object->state & 3
+#define GET_WRITE_INDEX() (object->state >> 2) & 3
+#define GET_SHARED_INDEX() (object->state >> 4) & 3
+#define GET_DATA_AVAILABLE() (object->state >> 6) & 1
+
+#define SET_READ_INDEX(i) object->state = ((object->state & ~3) | i)
+#define SET_WRITE_INDEX(i) object->state = ((object->state & ~(3 << 2)) | (i << 2))
+#define SET_SHARED_INDEX(i) object->state = ((object->state & ~(3 << 4)) | (i << 4))
+#define SET_DATA_AVAILABLE(i) object->state = ((object->state & ~(1 << 6)) | (i << 6))
+
+void triple_buffer_init(triple_buffer_object_t* object) {
+    object->state = 0;
+    SET_WRITE_INDEX(0);
+    SET_READ_INDEX(1);
+    SET_SHARED_INDEX(2);
+    SET_DATA_AVAILABLE(0);
+}
+
+void* triple_buffer_read_internal(uint16_t object_size, triple_buffer_object_t* object) {
+    serial_link_lock();
+    if (GET_DATA_AVAILABLE()) {
+        uint8_t shared_index = GET_SHARED_INDEX();
+        uint8_t read_index = GET_READ_INDEX();
+        SET_READ_INDEX(shared_index);
+        SET_SHARED_INDEX(read_index);
+        SET_DATA_AVAILABLE(false);
+        serial_link_unlock();
+        return object->buffer + object_size * shared_index;
+    }
+    else {
+        serial_link_unlock();
+        return NULL;
+    }
+}
+
+void* triple_buffer_begin_write_internal(uint16_t object_size, triple_buffer_object_t* object) {
+    uint8_t write_index = GET_WRITE_INDEX();
+    return object->buffer + object_size * write_index;
+}
+
+void triple_buffer_end_write_internal(triple_buffer_object_t* object) {
+    serial_link_lock();
+    uint8_t shared_index = GET_SHARED_INDEX();
+    uint8_t write_index = GET_WRITE_INDEX();
+    SET_SHARED_INDEX(write_index);
+    SET_WRITE_INDEX(shared_index);
+    SET_DATA_AVAILABLE(true);
+    serial_link_unlock();
+}
diff --git a/quantum/serial_link/protocol/triple_buffered_object.h b/quantum/serial_link/protocol/triple_buffered_object.h
new file mode 100644
index 000000000..2e57db3f5
--- /dev/null
+++ b/quantum/serial_link/protocol/triple_buffered_object.h
@@ -0,0 +1,51 @@
+/*
+The MIT License (MIT)
+
+Copyright (c) 2016 Fred Sundvik
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#ifndef SERIAL_LINK_TRIPLE_BUFFERED_OBJECT_H
+#define SERIAL_LINK_TRIPLE_BUFFERED_OBJECT_H
+
+#include <stdint.h>
+
+typedef struct {
+    uint8_t state;
+    uint8_t buffer[] __attribute__((aligned(4)));
+}triple_buffer_object_t;
+
+void triple_buffer_init(triple_buffer_object_t* object);
+
+#define triple_buffer_begin_write(object) \
+    (typeof(*object.buffer[0])*)triple_buffer_begin_write_internal(sizeof(*object.buffer[0]), (triple_buffer_object_t*)object)
+
+#define triple_buffer_end_write(object) \
+    triple_buffer_end_write_internal((triple_buffer_object_t*)object)
+
+#define triple_buffer_read(object) \
+    (typeof(*object.buffer[0])*)triple_buffer_read_internal(sizeof(*object.buffer[0]), (triple_buffer_object_t*)object)
+
+void* triple_buffer_begin_write_internal(uint16_t object_size, triple_buffer_object_t* object);
+void triple_buffer_end_write_internal(triple_buffer_object_t* object);
+void* triple_buffer_read_internal(uint16_t object_size, triple_buffer_object_t* object);
+
+
+#endif
diff --git a/quantum/serial_link/system/serial_link.c b/quantum/serial_link/system/serial_link.c
new file mode 100644
index 000000000..75c7e77a7
--- /dev/null
+++ b/quantum/serial_link/system/serial_link.c
@@ -0,0 +1,265 @@
+/*
+The MIT License (MIT)
+
+Copyright (c) 2016 Fred Sundvik
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+#include "report.h"
+#include "host_driver.h"
+#include "serial_link/system/serial_link.h"
+#include "hal.h"
+#include "serial_link/protocol/byte_stuffer.h"
+#include "serial_link/protocol/transport.h"
+#include "serial_link/protocol/frame_router.h"
+#include "matrix.h"
+#include <stdbool.h>
+#include "print.h"
+#include "config.h"
+
+static event_source_t new_data_event;
+static bool serial_link_connected;
+static bool is_master = false;
+
+static uint8_t keyboard_leds(void);
+static void send_keyboard(report_keyboard_t *report);
+static void send_mouse(report_mouse_t *report);
+static void send_system(uint16_t data);
+static void send_consumer(uint16_t data);
+
+host_driver_t serial_driver = {
+  keyboard_leds,
+  send_keyboard,
+  send_mouse,
+  send_system,
+  send_consumer
+};
+
+// Define these in your Config.h file
+#ifndef SERIAL_LINK_BAUD
+#error "Serial link baud is not set"
+#endif
+
+#ifndef SERIAL_LINK_THREAD_PRIORITY
+#error "Serial link thread priority not set"
+#endif
+
+static SerialConfig config = {
+    .sc_speed = SERIAL_LINK_BAUD
+};
+
+//#define DEBUG_LINK_ERRORS
+
+static uint32_t read_from_serial(SerialDriver* driver, uint8_t link) {
+    const uint32_t buffer_size = 16;
+    uint8_t buffer[buffer_size];
+    uint32_t bytes_read = sdAsynchronousRead(driver, buffer, buffer_size);
+    uint8_t* current = buffer;
+    uint8_t* end = current + bytes_read;
+    while(current < end) {
+        byte_stuffer_recv_byte(link, *current);
+        current++;
+    }
+    return bytes_read;
+}
+
+static void print_error(char* str, eventflags_t flags, SerialDriver* driver) {
+#ifdef DEBUG_LINK_ERRORS
+    if (flags & SD_PARITY_ERROR) {
+        print(str);
+        print(" Parity error\n");
+    }
+    if (flags & SD_FRAMING_ERROR) {
+        print(str);
+        print(" Framing error\n");
+    }
+    if (flags & SD_OVERRUN_ERROR) {
+        print(str);
+        uint32_t size = qSpaceI(&(driver->iqueue));
+        xprintf(" Overrun error, queue size %d\n", size);
+
+    }
+    if (flags & SD_NOISE_ERROR) {
+        print(str);
+        print(" Noise error\n");
+    }
+    if (flags & SD_BREAK_DETECTED) {
+        print(str);
+        print(" Break detected\n");
+    }
+#else
+    (void)str;
+    (void)flags;
+    (void)driver;
+#endif
+}
+
+bool is_serial_link_master(void) {
+    return is_master;
+}
+
+// TODO: Optimize the stack size, this is probably way too big
+static THD_WORKING_AREA(serialThreadStack, 1024);
+static THD_FUNCTION(serialThread, arg) {
+    (void)arg;
+    event_listener_t new_data_listener;
+    event_listener_t sd1_listener;
+    event_listener_t sd2_listener;
+    chEvtRegister(&new_data_event, &new_data_listener, 0);
+    eventflags_t events = CHN_INPUT_AVAILABLE
+            | SD_PARITY_ERROR | SD_FRAMING_ERROR | SD_OVERRUN_ERROR | SD_NOISE_ERROR | SD_BREAK_DETECTED;
+    chEvtRegisterMaskWithFlags(chnGetEventSource(&SD1),
+        &sd1_listener,
+        EVENT_MASK(1),
+        events);
+    chEvtRegisterMaskWithFlags(chnGetEventSource(&SD2),
+        &sd2_listener,
+        EVENT_MASK(2),
+        events);
+    bool need_wait = false;
+    while(true) {
+        eventflags_t flags1 = 0;
+        eventflags_t flags2 = 0;
+        if (need_wait) {
+            eventmask_t mask = chEvtWaitAnyTimeout(ALL_EVENTS, MS2ST(1000));
+            if (mask & EVENT_MASK(1)) {
+                flags1 = chEvtGetAndClearFlags(&sd1_listener);
+                print_error("DOWNLINK", flags1, &SD1);
+            }
+            if (mask & EVENT_MASK(2)) {
+                flags2 = chEvtGetAndClearFlags(&sd2_listener);
+                print_error("UPLINK", flags2, &SD2);
+            }
+        }
+
+        // Always stay as master, even if the USB goes into sleep mode
+        is_master |= usbGetDriverStateI(&USBD1) == USB_ACTIVE;
+        router_set_master(is_master);
+
+        need_wait = true;
+        need_wait &= read_from_serial(&SD2, UP_LINK) == 0;
+        need_wait &= read_from_serial(&SD1, DOWN_LINK) == 0;
+        update_transport();
+    }
+}
+
+void send_data(uint8_t link, const uint8_t* data, uint16_t size) {
+    if (link == DOWN_LINK) {
+        sdWrite(&SD1, data, size);
+    }
+    else {
+        sdWrite(&SD2, data, size);
+    }
+}
+
+static systime_t last_update = 0;
+
+typedef struct {
+    matrix_row_t rows[MATRIX_ROWS];
+} matrix_object_t;
+
+static matrix_object_t last_matrix = {};
+
+SLAVE_TO_MASTER_OBJECT(keyboard_matrix, matrix_object_t);
+MASTER_TO_ALL_SLAVES_OBJECT(serial_link_connected, bool);
+
+static remote_object_t* remote_objects[] = {
+    REMOTE_OBJECT(serial_link_connected),
+    REMOTE_OBJECT(keyboard_matrix),
+};
+
+void init_serial_link(void) {
+    serial_link_connected = false;
+    init_serial_link_hal();
+    add_remote_objects(remote_objects, sizeof(remote_objects)/sizeof(remote_object_t*));
+    init_byte_stuffer();
+    sdStart(&SD1, &config);
+    sdStart(&SD2, &config);
+    chEvtObjectInit(&new_data_event);
+    (void)chThdCreateStatic(serialThreadStack, sizeof(serialThreadStack),
+                              SERIAL_LINK_THREAD_PRIORITY, serialThread, NULL);
+}
+
+void matrix_set_remote(matrix_row_t* rows, uint8_t index);
+
+void serial_link_update(void) {
+    if (read_serial_link_connected()) {
+        serial_link_connected = true;
+    }
+
+    matrix_object_t matrix;
+    bool changed = false;
+    for(uint8_t i=0;i<MATRIX_ROWS;i++) {
+        matrix.rows[i] = matrix_get_row(i);
+        changed |= matrix.rows[i] != last_matrix.rows[i];
+    }
+
+    systime_t current_time = chVTGetSystemTimeX();
+    systime_t delta = current_time - last_update;
+    if (changed || delta > US2ST(1000)) {
+        last_update = current_time;
+        last_matrix = matrix;
+        matrix_object_t* m = begin_write_keyboard_matrix();
+        for(uint8_t i=0;i<MATRIX_ROWS;i++) {
+            m->rows[i] = matrix.rows[i];
+        }
+        end_write_keyboard_matrix();
+        *begin_write_serial_link_connected() = true;
+        end_write_serial_link_connected();
+    }
+
+    matrix_object_t* m = read_keyboard_matrix(0);
+    if (m) {
+        matrix_set_remote(m->rows, 0);
+    }
+}
+
+void signal_data_written(void) {
+    chEvtBroadcast(&new_data_event);
+}
+
+bool is_serial_link_connected(void) {
+    return serial_link_connected;
+}
+
+host_driver_t* get_serial_link_driver(void) {
+    return &serial_driver;
+}
+
+// NOTE: The driver does nothing, because the master handles everything
+uint8_t keyboard_leds(void) {
+    return 0;
+}
+
+void send_keyboard(report_keyboard_t *report) {
+    (void)report;
+}
+
+void send_mouse(report_mouse_t *report) {
+    (void)report;
+}
+
+void send_system(uint16_t data) {
+    (void)data;
+}
+
+void send_consumer(uint16_t data) {
+    (void)data;
+}
+
diff --git a/quantum/serial_link/system/serial_link.h b/quantum/serial_link/system/serial_link.h
new file mode 100644
index 000000000..351e03877
--- /dev/null
+++ b/quantum/serial_link/system/serial_link.h
@@ -0,0 +1,63 @@
+/*
+The MIT License (MIT)
+
+Copyright (c) 2016 Fred Sundvik
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#ifndef SERIAL_LINK_H
+#define SERIAL_LINK_H
+
+#include "host_driver.h"
+#include <stdbool.h>
+
+void init_serial_link(void);
+void init_serial_link_hal(void);
+bool is_serial_link_connected(void);
+bool is_serial_link_master(void);
+host_driver_t* get_serial_link_driver(void);
+void serial_link_update(void);
+
+#if defined(PROTOCOL_CHIBIOS)
+#include "ch.h"
+
+static inline void serial_link_lock(void) {
+    chSysLock();
+}
+
+static inline void serial_link_unlock(void) {
+    chSysUnlock();
+}
+
+void signal_data_written(void);
+
+#else
+
+inline void serial_link_lock(void) {
+}
+
+inline void serial_link_unlock(void) {
+}
+
+void signal_data_written(void);
+
+#endif
+
+#endif
diff --git a/quantum/serial_link/tests/Makefile b/quantum/serial_link/tests/Makefile
new file mode 100644
index 000000000..1b072c6f1
--- /dev/null
+++ b/quantum/serial_link/tests/Makefile
@@ -0,0 +1,61 @@
+# The MIT License (MIT)
+# 
+# Copyright (c) 2016 Fred Sundvik
+# 
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+# 
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+CC = gcc
+CFLAGS  = 
+INCLUDES = -I. -I../../
+LDFLAGS = -L$(BUILDDIR)/cgreen/build-c/src -shared
+LDLIBS = -lcgreen
+UNITOBJ = $(BUILDDIR)/serialtest/unitobj
+DEPDIR = $(BUILDDIR)/serialtest/unit.d
+UNITTESTS = $(BUILDDIR)/serialtest/unittests
+DEPFLAGS = -MT $@ -MMD -MP -MF $(DEPDIR)/$*.Td
+EXT = .so
+UNAME := $(shell uname)
+ifneq (, $(findstring MINGW, $(UNAME)))
+        EXT = .dll
+endif
+ifneq (, $(findstring CYGWIN, $(UNAME)))
+        EXT = .dll
+endif
+        
+SRC = $(wildcard *.c)
+TESTFILES = $(patsubst %.c, $(UNITTESTS)/%$(EXT), $(SRC))
+$(shell mkdir -p $(DEPDIR) >/dev/null)
+
+test: $(TESTFILES)
+        @$(BUILDDIR)/cgreen/build-c/tools/cgreen-runner --color $(TESTFILES)
+
+$(UNITTESTS)/%$(EXT): $(UNITOBJ)/%.o
+        @mkdir -p $(UNITTESTS)
+        $(CC) $(LDFLAGS) -o $@ $^ $(LDLIBS)
+
+$(UNITOBJ)/%.o : %.c
+$(UNITOBJ)/%.o: %.c $(DEPDIR)/%.d
+        @mkdir -p $(UNITOBJ)
+        $(CC) $(CFLAGS) $(DEPFLAGS) $(INCLUDES) -c $< -o $@
+        @mv -f $(DEPDIR)/$*.Td $(DEPDIR)/$*.d
+        
+$(DEPDIR)/%.d: ;
+.PRECIOUS: $(DEPDIR)/%.d
+
+-include $(patsubst %,$(DEPDIR)/%.d,$(basename $(SRC)))
\ No newline at end of file
diff --git a/quantum/serial_link/tests/byte_stuffer_tests.cpp b/quantum/serial_link/tests/byte_stuffer_tests.cpp
new file mode 100644
index 000000000..ff49d727b
--- /dev/null
+++ b/quantum/serial_link/tests/byte_stuffer_tests.cpp
@@ -0,0 +1,483 @@
+/*
+The MIT License (MIT)
+
+Copyright (c) 2016 Fred Sundvik
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#include "gtest/gtest.h"
+#include "gmock/gmock.h"
+#include <vector>
+#include <algorithm>
+extern "C" {
+#include "serial_link/protocol/byte_stuffer.h"
+#include "serial_link/protocol/frame_validator.h"
+#include "serial_link/protocol/physical.h"
+}
+
+using testing::_;
+using testing::ElementsAreArray;
+using testing::Args;
+
+class ByteStuffer : public ::testing::Test{
+public:
+    ByteStuffer() {
+        Instance = this;
+        init_byte_stuffer();
+    }
+
+    ~ByteStuffer() {
+        Instance = nullptr;
+    }
+
+    MOCK_METHOD3(validator_recv_frame, void (uint8_t link, uint8_t* data, uint16_t size));
+
+    void send_data(uint8_t link, const uint8_t* data, uint16_t size) {
+        std::copy(data, data + size, std::back_inserter(sent_data));
+    }
+    std::vector<uint8_t> sent_data;
+
+    static ByteStuffer* Instance;
+};
+
+ByteStuffer* ByteStuffer::Instance = nullptr;
+
+extern "C" {
+    void validator_recv_frame(uint8_t link, uint8_t* data, uint16_t size) {
+        ByteStuffer::Instance->validator_recv_frame(link, data, size);
+    }
+
+    void send_data(uint8_t link, const uint8_t* data, uint16_t size) {
+        ByteStuffer::Instance->send_data(link, data, size);
+    }
+}
+
+TEST_F(ByteStuffer, receives_no_frame_for_a_single_zero_byte) {
+    EXPECT_CALL(*this, validator_recv_frame(_, _, _))
+        .Times(0);
+    byte_stuffer_recv_byte(0, 0);
+}
+
+TEST_F(ByteStuffer, receives_no_frame_for_a_single_FF_byte) {
+    EXPECT_CALL(*this, validator_recv_frame(_, _, _))
+        .Times(0);
+    byte_stuffer_recv_byte(0, 0xFF);
+}
+
+TEST_F(ByteStuffer, receives_no_frame_for_a_single_random_byte) {
+    EXPECT_CALL(*this, validator_recv_frame(_, _, _))
+        .Times(0);
+    byte_stuffer_recv_byte(0, 0x4A);
+}
+
+TEST_F(ByteStuffer, receives_no_frame_for_a_zero_length_frame) {
+    EXPECT_CALL(*this, validator_recv_frame(_, _, _))
+        .Times(0);
+    byte_stuffer_recv_byte(0, 1);
+    byte_stuffer_recv_byte(0, 0);
+}
+
+TEST_F(ByteStuffer, receives_single_byte_valid_frame) {
+    uint8_t expected[] = {0x37};
+    EXPECT_CALL(*this, validator_recv_frame(_, _, _))
+        .With(Args<1, 2>(ElementsAreArray(expected)));
+    byte_stuffer_recv_byte(0, 2);
+    byte_stuffer_recv_byte(0, 0x37);
+    byte_stuffer_recv_byte(0, 0);
+}
+TEST_F(ByteStuffer, receives_three_bytes_valid_frame) {
+    uint8_t expected[] = {0x37, 0x99, 0xFF};
+    EXPECT_CALL(*this, validator_recv_frame(_, _, _))
+        .With(Args<1, 2>(ElementsAreArray(expected)));
+    byte_stuffer_recv_byte(0, 4);
+    byte_stuffer_recv_byte(0, 0x37);
+    byte_stuffer_recv_byte(0, 0x99);
+    byte_stuffer_recv_byte(0, 0xFF);
+    byte_stuffer_recv_byte(0, 0);
+}
+
+TEST_F(ByteStuffer, receives_single_zero_valid_frame) {
+    uint8_t expected[] = {0};
+    EXPECT_CALL(*this, validator_recv_frame(_, _, _))
+        .With(Args<1, 2>(ElementsAreArray(expected)));
+    byte_stuffer_recv_byte(0, 1);
+    byte_stuffer_recv_byte(0, 1);
+    byte_stuffer_recv_byte(0, 0);
+}
+
+TEST_F(ByteStuffer, receives_valid_frame_with_zeroes) {
+    uint8_t expected[] = {5, 0, 3, 0};
+    EXPECT_CALL(*this, validator_recv_frame(_, _, _))
+        .With(Args<1, 2>(ElementsAreArray(expected)));
+    byte_stuffer_recv_byte(0, 2);
+    byte_stuffer_recv_byte(0, 5);
+    byte_stuffer_recv_byte(0, 2);
+    byte_stuffer_recv_byte(0, 3);
+    byte_stuffer_recv_byte(0, 1);
+    byte_stuffer_recv_byte(0, 0);
+}
+
+
+TEST_F(ByteStuffer, receives_two_valid_frames) {
+    uint8_t expected1[] = {5, 0};
+    uint8_t expected2[] = {3};
+    EXPECT_CALL(*this, validator_recv_frame(_, _, _))
+        .With(Args<1, 2>(ElementsAreArray(expected1)));
+    EXPECT_CALL(*this, validator_recv_frame(_, _, _))
+        .With(Args<1, 2>(ElementsAreArray(expected2)));
+    byte_stuffer_recv_byte(1, 2);
+    byte_stuffer_recv_byte(1, 5);
+    byte_stuffer_recv_byte(1, 1);
+    byte_stuffer_recv_byte(1, 0);
+    byte_stuffer_recv_byte(1, 2);
+    byte_stuffer_recv_byte(1, 3);
+    byte_stuffer_recv_byte(1, 0);
+}
+
+TEST_F(ByteStuffer, receives_valid_frame_after_unexpected_zero) {
+    uint8_t expected[] = {5, 7};
+    EXPECT_CALL(*this, validator_recv_frame(_, _, _))
+        .With(Args<1, 2>(ElementsAreArray(expected)));
+    byte_stuffer_recv_byte(1, 3);
+    byte_stuffer_recv_byte(1, 1);
+    byte_stuffer_recv_byte(1, 0);
+    byte_stuffer_recv_byte(1, 3);
+    byte_stuffer_recv_byte(1, 5);
+    byte_stuffer_recv_byte(1, 7);
+    byte_stuffer_recv_byte(1, 0);
+}
+
+TEST_F(ByteStuffer, receives_valid_frame_after_unexpected_non_zero) {
+    uint8_t expected[] = {5, 7};
+    EXPECT_CALL(*this, validator_recv_frame(_, _, _))
+        .With(Args<1, 2>(ElementsAreArray(expected)));
+    byte_stuffer_recv_byte(0, 2);
+    byte_stuffer_recv_byte(0, 9);
+    byte_stuffer_recv_byte(0, 4); // This should have been zero
+    byte_stuffer_recv_byte(0, 0);
+    byte_stuffer_recv_byte(0, 3);
+    byte_stuffer_recv_byte(0, 5);
+    byte_stuffer_recv_byte(0, 7);
+    byte_stuffer_recv_byte(0, 0);
+}
+
+TEST_F(ByteStuffer, receives_a_valid_frame_with_over254_non_zeroes_and_then_end_of_frame) {
+    uint8_t expected[254];
+    int i;
+    for (i=0;i<254;i++) {
+        expected[i] = i + 1;
+    }
+    EXPECT_CALL(*this, validator_recv_frame(_, _, _))
+        .With(Args<1, 2>(ElementsAreArray(expected)));
+    byte_stuffer_recv_byte(0, 0xFF);
+    for (i=0;i<254;i++) {
+        byte_stuffer_recv_byte(0, i+1);
+    }
+    byte_stuffer_recv_byte(0, 0);
+}
+
+TEST_F(ByteStuffer, receives_a_valid_frame_with_over254_non_zeroes_next_byte_is_non_zero) {
+    uint8_t expected[255];
+    int i;
+    for (i=0;i<254;i++) {
+        expected[i] = i + 1;
+    }
+    expected[254] = 7;
+    EXPECT_CALL(*this, validator_recv_frame(_, _, _))
+        .With(Args<1, 2>(ElementsAreArray(expected)));
+    byte_stuffer_recv_byte(0, 0xFF);
+    for (i=0;i<254;i++) {
+        byte_stuffer_recv_byte(0, i+1);
+    }
+    byte_stuffer_recv_byte(0, 2);
+    byte_stuffer_recv_byte(0, 7);
+    byte_stuffer_recv_byte(0, 0);
+}
+
+TEST_F(ByteStuffer, receives_a_valid_frame_with_over254_non_zeroes_next_byte_is_zero) {
+    uint8_t expected[255];
+    int i;
+    for (i=0;i<254;i++) {
+        expected[i] = i + 1;
+    }
+    expected[254] = 0;
+    EXPECT_CALL(*this, validator_recv_frame(_, _, _))
+        .With(Args<1, 2>(ElementsAreArray(expected)));
+    byte_stuffer_recv_byte(0, 0xFF);
+    for (i=0;i<254;i++) {
+        byte_stuffer_recv_byte(0, i+1);
+    }
+    byte_stuffer_recv_byte(0, 1);
+    byte_stuffer_recv_byte(0, 1);
+    byte_stuffer_recv_byte(0, 0);
+}
+
+TEST_F(ByteStuffer, receives_two_long_frames_and_some_more) {
+    uint8_t expected[515];
+    int i;
+    int j;
+    for (j=0;j<2;j++) {
+        for (i=0;i<254;i++) {
+            expected[i+254*j] = i + 1;
+        }
+    }
+    for (i=0;i<7;i++) {
+        expected[254*2+i] = i + 1;
+    }
+    EXPECT_CALL(*this, validator_recv_frame(_, _, _))
+        .With(Args<1, 2>(ElementsAreArray(expected)));
+    byte_stuffer_recv_byte(0, 0xFF);
+    for (i=0;i<254;i++) {
+        byte_stuffer_recv_byte(0, i+1);
+    }
+    byte_stuffer_recv_byte(0, 0xFF);
+    for (i=0;i<254;i++) {
+        byte_stuffer_recv_byte(0, i+1);
+    }
+    byte_stuffer_recv_byte(0, 8);
+    byte_stuffer_recv_byte(0, 1);
+    byte_stuffer_recv_byte(0, 2);
+    byte_stuffer_recv_byte(0, 3);
+    byte_stuffer_recv_byte(0, 4);
+    byte_stuffer_recv_byte(0, 5);
+    byte_stuffer_recv_byte(0, 6);
+    byte_stuffer_recv_byte(0, 7);
+    byte_stuffer_recv_byte(0, 0);
+}
+
+TEST_F(ByteStuffer, receives_an_all_zeros_frame_that_is_maximum_size) {
+    uint8_t expected[MAX_FRAME_SIZE] = {};
+    EXPECT_CALL(*this, validator_recv_frame(_, _, _))
+        .With(Args<1, 2>(ElementsAreArray(expected)));
+    int i;
+    byte_stuffer_recv_byte(0, 1);
+    for(i=0;i<MAX_FRAME_SIZE;i++) {
+       byte_stuffer_recv_byte(0, 1);
+    }
+    byte_stuffer_recv_byte(0, 0);
+}
+
+TEST_F(ByteStuffer, doesnt_recv_a_frame_thats_too_long_all_zeroes) {
+    uint8_t expected[1] = {0};
+    EXPECT_CALL(*this, validator_recv_frame(_, _, _))
+        .Times(0);
+    int i;
+    byte_stuffer_recv_byte(0, 1);
+    for(i=0;i<MAX_FRAME_SIZE;i++) {
+       byte_stuffer_recv_byte(0, 1);
+    }
+    byte_stuffer_recv_byte(0, 1);
+    byte_stuffer_recv_byte(0, 0);
+}
+
+TEST_F(ByteStuffer, received_frame_is_aborted_when_its_too_long) {
+    uint8_t expected[1] = {1};
+    EXPECT_CALL(*this, validator_recv_frame(_, _, _))
+        .With(Args<1, 2>(ElementsAreArray(expected)));
+    int i;
+    byte_stuffer_recv_byte(0, 1);
+    for(i=0;i<MAX_FRAME_SIZE;i++) {
+       byte_stuffer_recv_byte(0, 1);
+    }
+    byte_stuffer_recv_byte(0, 2);
+    byte_stuffer_recv_byte(0, 1);
+    byte_stuffer_recv_byte(0, 0);
+}
+
+TEST_F(ByteStuffer, does_nothing_when_sending_zero_size_frame) {
+    EXPECT_EQ(sent_data.size(), 0);
+    byte_stuffer_send_frame(0, NULL, 0);
+}
+
+TEST_F(ByteStuffer, send_one_byte_frame) {
+    uint8_t data[] = {5};
+    byte_stuffer_send_frame(1, data, 1);
+    uint8_t expected[] = {2, 5, 0};
+    EXPECT_THAT(sent_data, ElementsAreArray(expected));
+}
+
+TEST_F(ByteStuffer, sends_two_byte_frame) {
+    uint8_t data[] = {5, 0x77};
+    byte_stuffer_send_frame(0, data, 2);
+    uint8_t expected[] = {3, 5, 0x77, 0};
+    EXPECT_THAT(sent_data, ElementsAreArray(expected));
+}
+
+TEST_F(ByteStuffer, sends_one_byte_frame_with_zero) {
+    uint8_t data[] = {0};
+    byte_stuffer_send_frame(0, data, 1);
+    uint8_t expected[] = {1, 1, 0};
+    EXPECT_THAT(sent_data, ElementsAreArray(expected));
+}
+
+TEST_F(ByteStuffer, sends_two_byte_frame_starting_with_zero) {
+    uint8_t data[] = {0, 9};
+    byte_stuffer_send_frame(1, data, 2);
+    uint8_t expected[] = {1, 2, 9, 0};
+    EXPECT_THAT(sent_data, ElementsAreArray(expected));
+}
+
+TEST_F(ByteStuffer, sends_two_byte_frame_starting_with_non_zero) {
+    uint8_t data[] = {9, 0};
+    byte_stuffer_send_frame(1, data, 2);
+    uint8_t expected[] = {2, 9, 1, 0};
+    EXPECT_THAT(sent_data, ElementsAreArray(expected));
+}
+
+TEST_F(ByteStuffer, sends_three_byte_frame_zero_in_the_middle) {
+    uint8_t data[] = {9, 0, 0x68};
+    byte_stuffer_send_frame(0, data, 3);
+    uint8_t expected[] = {2, 9, 2, 0x68, 0};
+    EXPECT_THAT(sent_data, ElementsAreArray(expected));
+}
+
+TEST_F(ByteStuffer, sends_three_byte_frame_data_in_the_middle) {
+    uint8_t data[] = {0, 0x55, 0};
+    byte_stuffer_send_frame(0, data, 3);
+    uint8_t expected[] = {1, 2, 0x55, 1, 0};
+    EXPECT_THAT(sent_data, ElementsAreArray(expected));
+}
+
+TEST_F(ByteStuffer, sends_three_byte_frame_with_all_zeroes) {
+    uint8_t data[] = {0, 0, 0};
+    byte_stuffer_send_frame(0, data, 3);
+    uint8_t expected[] = {1, 1, 1, 1, 0};
+    EXPECT_THAT(sent_data, ElementsAreArray(expected));
+}
+
+TEST_F(ByteStuffer, sends_frame_with_254_non_zeroes) {
+    uint8_t data[254];
+    int i;
+    for(i=0;i<254;i++) {
+        data[i] = i + 1;
+    }
+    byte_stuffer_send_frame(0, data, 254);
+    uint8_t expected[256];
+    expected[0] = 0xFF;
+    for(i=1;i<255;i++) {
+        expected[i] = i;
+    }
+    expected[255] = 0;
+    EXPECT_THAT(sent_data, ElementsAreArray(expected));
+}
+
+TEST_F(ByteStuffer, sends_frame_with_255_non_zeroes) {
+    uint8_t data[255];
+    int i;
+    for(i=0;i<255;i++) {
+        data[i] = i + 1;
+    }
+    byte_stuffer_send_frame(0, data, 255);
+    uint8_t expected[258];
+    expected[0] = 0xFF;
+    for(i=1;i<255;i++) {
+        expected[i] = i;
+    }
+    expected[255] = 2;
+    expected[256] = 255;
+    expected[257] = 0;
+    EXPECT_THAT(sent_data, ElementsAreArray(expected));
+}
+
+TEST_F(ByteStuffer, sends_frame_with_254_non_zeroes_followed_by_zero) {
+    uint8_t data[255];
+    int i;
+    for(i=0;i<254;i++) {
+        data[i] = i + 1;
+    }
+    data[254] = 0;
+    byte_stuffer_send_frame(0, data, 255);
+    uint8_t expected[258];
+    expected[0] = 0xFF;
+    for(i=1;i<255;i++) {
+        expected[i] = i;
+    }
+    expected[255] = 1;
+    expected[256] = 1;
+    expected[257] = 0;
+    EXPECT_THAT(sent_data, ElementsAreArray(expected));
+}
+
+TEST_F(ByteStuffer, sends_and_receives_full_roundtrip_small_packet) {
+    uint8_t original_data[] = { 1, 2, 3};
+    byte_stuffer_send_frame(0, original_data, sizeof(original_data));
+    EXPECT_CALL(*this, validator_recv_frame(_, _, _))
+        .With(Args<1, 2>(ElementsAreArray(original_data)));
+    int i;
+    for(auto& d : sent_data) {
+       byte_stuffer_recv_byte(1, d);
+    }
+}
+
+TEST_F(ByteStuffer, sends_and_receives_full_roundtrip_small_packet_with_zeros) {
+    uint8_t original_data[] = { 1, 0, 3, 0, 0, 9};
+    byte_stuffer_send_frame(1, original_data, sizeof(original_data));
+    EXPECT_CALL(*this, validator_recv_frame(_, _, _))
+        .With(Args<1, 2>(ElementsAreArray(original_data)));
+    int i;
+    for(auto& d : sent_data) {
+       byte_stuffer_recv_byte(1, d);
+    }
+}
+
+TEST_F(ByteStuffer, sends_and_receives_full_roundtrip_254_bytes) {
+    uint8_t original_data[254];
+    int i;
+    for(i=0;i<254;i++) {
+        original_data[i] = i + 1;
+    }
+    byte_stuffer_send_frame(0, original_data, sizeof(original_data));
+    EXPECT_CALL(*this, validator_recv_frame(_, _, _))
+        .With(Args<1, 2>(ElementsAreArray(original_data)));
+    for(auto& d : sent_data) {
+       byte_stuffer_recv_byte(1, d);
+    }
+}
+
+TEST_F(ByteStuffer, sends_and_receives_full_roundtrip_256_bytes) {
+    uint8_t original_data[256];
+    int i;
+    for(i=0;i<254;i++) {
+        original_data[i] = i + 1;
+    }
+    original_data[254] = 22;
+    original_data[255] = 23;
+    byte_stuffer_send_frame(0, original_data, sizeof(original_data));
+    EXPECT_CALL(*this, validator_recv_frame(_, _, _))
+        .With(Args<1, 2>(ElementsAreArray(original_data)));
+    for(auto& d : sent_data) {
+       byte_stuffer_recv_byte(1, d);
+    }
+}
+
+TEST_F(ByteStuffer, sends_and_receives_full_roundtrip_254_bytes_and_then_zero) {
+    uint8_t original_data[255];
+    int i;
+    for(i=0;i<254;i++) {
+        original_data[i] = i + 1;
+    }
+    original_data[254] = 0;
+    byte_stuffer_send_frame(0, original_data, sizeof(original_data));
+    EXPECT_CALL(*this, validator_recv_frame(_, _, _))
+        .With(Args<1, 2>(ElementsAreArray(original_data)));
+    for(auto& d : sent_data) {
+       byte_stuffer_recv_byte(1, d);
+    }
+}
diff --git a/quantum/serial_link/tests/frame_router_tests.cpp b/quantum/serial_link/tests/frame_router_tests.cpp
new file mode 100644
index 000000000..2bd5bf830
--- /dev/null
+++ b/quantum/serial_link/tests/frame_router_tests.cpp
@@ -0,0 +1,229 @@
+/*
+The MIT License (MIT)
+
+Copyright (c) 2016 Fred Sundvik
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#include "gtest/gtest.h"
+#include "gmock/gmock.h"
+#include <array>
+extern "C" {
+    #include "serial_link/protocol/transport.h"
+    #include "serial_link/protocol/byte_stuffer.h"
+    #include "serial_link/protocol/frame_router.h"
+}
+
+using testing::_;
+using testing::ElementsAreArray;
+using testing::Args;
+
+class FrameRouter : public testing::Test {
+public:
+    FrameRouter() :
+        current_router_buffer(nullptr)
+    {
+        Instance = this;
+        init_byte_stuffer();
+    }
+
+    ~FrameRouter() {
+        Instance = nullptr;
+    }
+
+    void send_data(uint8_t link, const uint8_t* data, uint16_t size) {
+        auto& buffer = current_router_buffer->send_buffers[link];
+        std::copy(data, data + size, std::back_inserter(buffer));
+    }
+
+    void receive_data(uint8_t link, uint8_t* data, uint16_t size) {
+        int i;
+        for(i=0;i<size;i++) {
+            byte_stuffer_recv_byte(link, data[i]);
+        }
+    }
+
+    void activate_router(uint8_t num) {
+        current_router_buffer = router_buffers + num;
+        router_set_master(num==0);
+    }
+
+    void simulate_transport(uint8_t from, uint8_t to) {
+       activate_router(to);
+       if (from > to) {
+           receive_data(DOWN_LINK,
+                   router_buffers[from].send_buffers[UP_LINK].data(),
+                   router_buffers[from].send_buffers[UP_LINK].size());
+       }
+       else if(to > from) {
+           receive_data(UP_LINK,
+                   router_buffers[from].send_buffers[DOWN_LINK].data(),
+                   router_buffers[from].send_buffers[DOWN_LINK].size());
+       }
+    }
+
+    MOCK_METHOD3(transport_recv_frame, void (uint8_t from, uint8_t* data, uint16_t size));
+
+    std::vector<uint8_t> received_data;
+
+    struct router_buffer {
+        std::vector<uint8_t> send_buffers[2];
+    };
+
+    router_buffer router_buffers[8];
+    router_buffer* current_router_buffer;
+
+    static FrameRouter* Instance;
+};
+
+FrameRouter* FrameRouter::Instance = nullptr;
+
+
+typedef struct {
+    std::array<uint8_t, 4> data;
+    uint8_t extra[16];
+} frame_buffer_t;
+
+
+extern "C" {
+    void send_data(uint8_t link, const uint8_t* data, uint16_t size) {
+        FrameRouter::Instance->send_data(link, data, size);
+    }
+
+
+    void transport_recv_frame(uint8_t from, uint8_t* data, uint16_t size) {
+        FrameRouter::Instance->transport_recv_frame(from, data, size);
+    }
+}
+
+TEST_F(FrameRouter, master_broadcast_is_received_by_everyone) {
+    frame_buffer_t data;
+    data.data = {0xAB, 0x70, 0x55, 0xBB};
+    activate_router(0);
+    router_send_frame(0xFF, (uint8_t*)&data, 4);
+    EXPECT_GT(router_buffers[0].send_buffers[DOWN_LINK].size(), 0);
+    EXPECT_EQ(router_buffers[0].send_buffers[UP_LINK].size(), 0);
+    EXPECT_CALL(*this, transport_recv_frame(0, _, _))
+        .With(Args<1, 2>(ElementsAreArray(data.data)));
+    simulate_transport(0, 1);
+    EXPECT_GT(router_buffers[1].send_buffers[DOWN_LINK].size(), 0);
+    EXPECT_EQ(router_buffers[1].send_buffers[UP_LINK].size(), 0);
+
+    EXPECT_CALL(*this, transport_recv_frame(0, _, _))
+        .With(Args<1, 2>(ElementsAreArray(data.data)));
+    simulate_transport(1, 2);
+    EXPECT_GT(router_buffers[2].send_buffers[DOWN_LINK].size(), 0);
+    EXPECT_EQ(router_buffers[2].send_buffers[UP_LINK].size(), 0);
+}
+
+TEST_F(FrameRouter, master_send_is_received_by_targets) {
+    frame_buffer_t data;
+    data.data = {0xAB, 0x70, 0x55, 0xBB};
+    activate_router(0);
+    router_send_frame((1 << 1) | (1 << 2), (uint8_t*)&data, 4);
+    EXPECT_GT(router_buffers[0].send_buffers[DOWN_LINK].size(), 0);
+    EXPECT_EQ(router_buffers[0].send_buffers[UP_LINK].size(), 0);
+
+    simulate_transport(0, 1);
+    EXPECT_GT(router_buffers[1].send_buffers[DOWN_LINK].size(), 0);
+    EXPECT_EQ(router_buffers[1].send_buffers[UP_LINK].size(), 0);
+
+    EXPECT_CALL(*this, transport_recv_frame(0, _, _))
+        .With(Args<1, 2>(ElementsAreArray(data.data)));
+    simulate_transport(1, 2);
+    EXPECT_GT(router_buffers[2].send_buffers[DOWN_LINK].size(), 0);
+    EXPECT_EQ(router_buffers[2].send_buffers[UP_LINK].size(), 0);
+
+    EXPECT_CALL(*this, transport_recv_frame(0, _, _))
+        .With(Args<1, 2>(ElementsAreArray(data.data)));
+    simulate_transport(2, 3);
+    EXPECT_GT(router_buffers[3].send_buffers[DOWN_LINK].size(), 0);
+    EXPECT_EQ(router_buffers[3].send_buffers[UP_LINK].size(), 0);
+}
+
+TEST_F(FrameRouter, first_link_sends_to_master) {
+    frame_buffer_t data;
+    data.data = {0xAB, 0x70, 0x55, 0xBB};
+    activate_router(1);
+    router_send_frame(0, (uint8_t*)&data, 4);
+    EXPECT_GT(router_buffers[1].send_buffers[UP_LINK].size(), 0);
+    EXPECT_EQ(router_buffers[1].send_buffers[DOWN_LINK].size(), 0);
+
+    EXPECT_CALL(*this, transport_recv_frame(1, _, _))
+        .With(Args<1, 2>(ElementsAreArray(data.data)));
+    simulate_transport(1, 0);
+    EXPECT_EQ(router_buffers[0].send_buffers[DOWN_LINK].size(), 0);
+    EXPECT_EQ(router_buffers[0].send_buffers[UP_LINK].size(), 0);
+}
+
+TEST_F(FrameRouter, second_link_sends_to_master) {
+    frame_buffer_t data;
+    data.data = {0xAB, 0x70, 0x55, 0xBB};
+    activate_router(2);
+    router_send_frame(0, (uint8_t*)&data, 4);
+    EXPECT_GT(router_buffers[2].send_buffers[UP_LINK].size(), 0);
+    EXPECT_EQ(router_buffers[2].send_buffers[DOWN_LINK].size(), 0);
+
+    simulate_transport(2, 1);
+    EXPECT_GT(router_buffers[1].send_buffers[UP_LINK].size(), 0);
+    EXPECT_EQ(router_buffers[1].send_buffers[DOWN_LINK].size(), 0);
+
+    EXPECT_CALL(*this, transport_recv_frame(2, _, _))
+        .With(Args<1, 2>(ElementsAreArray(data.data)));
+    simulate_transport(1, 0);
+    EXPECT_EQ(router_buffers[0].send_buffers[DOWN_LINK].size(), 0);
+    EXPECT_EQ(router_buffers[0].send_buffers[UP_LINK].size(), 0);
+}
+
+TEST_F(FrameRouter, master_sends_to_master_does_nothing) {
+    frame_buffer_t data;
+    data.data = {0xAB, 0x70, 0x55, 0xBB};
+    activate_router(0);
+    router_send_frame(0, (uint8_t*)&data, 4);
+    EXPECT_EQ(router_buffers[0].send_buffers[UP_LINK].size(), 0);
+    EXPECT_EQ(router_buffers[0].send_buffers[DOWN_LINK].size(), 0);
+}
+
+TEST_F(FrameRouter, link_sends_to_other_link_does_nothing) {
+    frame_buffer_t data;
+    data.data = {0xAB, 0x70, 0x55, 0xBB};
+    activate_router(1);
+    router_send_frame(2, (uint8_t*)&data, 4);
+    EXPECT_EQ(router_buffers[1].send_buffers[UP_LINK].size(), 0);
+    EXPECT_EQ(router_buffers[1].send_buffers[DOWN_LINK].size(), 0);
+}
+
+TEST_F(FrameRouter, master_receives_on_uplink_does_nothing) {
+    frame_buffer_t data;
+    data.data = {0xAB, 0x70, 0x55, 0xBB};
+    activate_router(1);
+    router_send_frame(0, (uint8_t*)&data, 4);
+    EXPECT_GT(router_buffers[1].send_buffers[UP_LINK].size(), 0);
+    EXPECT_EQ(router_buffers[1].send_buffers[DOWN_LINK].size(), 0);
+
+    EXPECT_CALL(*this, transport_recv_frame(_, _, _))
+        .Times(0);
+    activate_router(0);
+    receive_data(UP_LINK,
+        router_buffers[1].send_buffers[UP_LINK].data(),
+        router_buffers[1].send_buffers[UP_LINK].size());
+    EXPECT_EQ(router_buffers[0].send_buffers[UP_LINK].size(), 0);
+    EXPECT_EQ(router_buffers[0].send_buffers[DOWN_LINK].size(), 0);
+}
diff --git a/quantum/serial_link/tests/frame_validator_tests.cpp b/quantum/serial_link/tests/frame_validator_tests.cpp
new file mode 100644
index 000000000..9223af83b
--- /dev/null
+++ b/quantum/serial_link/tests/frame_validator_tests.cpp
@@ -0,0 +1,115 @@
+/*
+The MIT License (MIT)
+
+Copyright (c) 2016 Fred Sundvik
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#include "gtest/gtest.h"
+#include "gmock/gmock.h"
+extern "C" {
+#include "serial_link/protocol/frame_validator.h"
+}
+
+using testing::_;
+using testing::ElementsAreArray;
+using testing::Args;
+
+class FrameValidator : public testing::Test {
+public:
+    FrameValidator() {
+        Instance = this;
+    }
+
+    ~FrameValidator() {
+        Instance = nullptr;
+    }
+
+    MOCK_METHOD3(route_incoming_frame, void (uint8_t link, uint8_t* data, uint16_t size));
+    MOCK_METHOD3(byte_stuffer_send_frame, void (uint8_t link, uint8_t* data, uint16_t size));
+
+    static FrameValidator* Instance;
+};
+
+FrameValidator* FrameValidator::Instance = nullptr;
+
+extern "C" {
+void route_incoming_frame(uint8_t link, uint8_t* data, uint16_t size) {
+    FrameValidator::Instance->route_incoming_frame(link, data, size);
+}
+
+void byte_stuffer_send_frame(uint8_t link, uint8_t* data, uint16_t size) {
+    FrameValidator::Instance->byte_stuffer_send_frame(link, data, size);
+}
+}
+
+TEST_F(FrameValidator, doesnt_validate_frames_under_5_bytes) {
+    EXPECT_CALL(*this, route_incoming_frame(_, _, _))
+        .Times(0);
+    uint8_t data[] = {1, 2};
+    validator_recv_frame(0, 0, 1);
+    validator_recv_frame(0, data, 2);
+    validator_recv_frame(0, data, 3);
+    validator_recv_frame(0, data, 4);
+}
+
+TEST_F(FrameValidator, validates_one_byte_frame_with_correct_crc) {
+    uint8_t data[] = {0x44, 0x04, 0x6A, 0xB3, 0xA3};
+    EXPECT_CALL(*this, route_incoming_frame(_, _, _))
+        .With(Args<1, 2>(ElementsAreArray(data, 1)));
+    validator_recv_frame(0, data, 5);
+}
+
+TEST_F(FrameValidator, does_not_validate_one_byte_frame_with_incorrect_crc) {
+    uint8_t data[] = {0x44, 0, 0, 0, 0};
+    EXPECT_CALL(*this, route_incoming_frame(_, _, _))
+        .Times(0);
+    validator_recv_frame(1, data, 5);
+}
+
+TEST_F(FrameValidator, validates_four_byte_frame_with_correct_crc) {
+    uint8_t data[] = {0x44, 0x10, 0xFF, 0x00, 0x74, 0x4E, 0x30, 0xBA};
+    EXPECT_CALL(*this, route_incoming_frame(_, _, _))
+        .With(Args<1, 2>(ElementsAreArray(data, 4)));
+    validator_recv_frame(1, data, 8);
+}
+
+TEST_F(FrameValidator, validates_five_byte_frame_with_correct_crc) {
+    uint8_t data[] = {1, 2, 3, 4, 5, 0xF4, 0x99, 0x0B, 0x47};
+    EXPECT_CALL(*this, route_incoming_frame(_, _, _))
+        .With(Args<1, 2>(ElementsAreArray(data, 5)));
+    validator_recv_frame(0, data, 9);
+}
+
+TEST_F(FrameValidator, sends_one_byte_with_correct_crc) {
+    uint8_t original[] = {0x44, 0, 0, 0, 0};
+    uint8_t expected[] = {0x44, 0x04, 0x6A, 0xB3, 0xA3};
+    EXPECT_CALL(*this, byte_stuffer_send_frame(_, _, _))
+        .With(Args<1, 2>(ElementsAreArray(expected)));
+    validator_send_frame(0, original, 1);
+}
+
+TEST_F(FrameValidator, sends_five_bytes_with_correct_crc) {
+    uint8_t original[] = {1, 2, 3, 4, 5, 0, 0, 0, 0};
+    uint8_t expected[] = {1, 2, 3, 4, 5, 0xF4, 0x99, 0x0B, 0x47};
+    EXPECT_CALL(*this, byte_stuffer_send_frame(_, _, _))
+        .With(Args<1, 2>(ElementsAreArray(expected)));
+    validator_send_frame(0, original, 5);
+}
diff --git a/quantum/serial_link/tests/rules.mk b/quantum/serial_link/tests/rules.mk
new file mode 100644
index 000000000..b81515bc5
--- /dev/null
+++ b/quantum/serial_link/tests/rules.mk
@@ -0,0 +1,22 @@
+serial_link_byte_stuffer_SRC :=\
+        $(SERIAL_PATH)/tests/byte_stuffer_tests.cpp \
+        $(SERIAL_PATH)/protocol/byte_stuffer.c
+
+serial_link_frame_validator_SRC := \
+        $(SERIAL_PATH)/tests/frame_validator_tests.cpp \
+        $(SERIAL_PATH)/protocol/frame_validator.c 
+
+serial_link_frame_router_SRC := \
+        $(SERIAL_PATH)/tests/frame_router_tests.cpp \
+        $(SERIAL_PATH)/protocol/byte_stuffer.c \
+        $(SERIAL_PATH)/protocol/frame_validator.c \
+        $(SERIAL_PATH)/protocol/frame_router.c
+
+serial_link_triple_buffered_object_SRC := \
+        $(SERIAL_PATH)/tests/triple_buffered_object_tests.cpp \
+        $(SERIAL_PATH)/protocol/triple_buffered_object.c 
+
+serial_link_transport_SRC := \
+        $(SERIAL_PATH)/tests/transport_tests.cpp \
+        $(SERIAL_PATH)/protocol/transport.c \
+        $(SERIAL_PATH)/protocol/triple_buffered_object.c 
diff --git a/quantum/serial_link/tests/testlist.mk b/quantum/serial_link/tests/testlist.mk
new file mode 100644
index 000000000..a80e88884
--- /dev/null
+++ b/quantum/serial_link/tests/testlist.mk
@@ -0,0 +1,6 @@
+TEST_LIST +=\
+        serial_link_byte_stuffer\
+        serial_link_frame_validator\
+        serial_link_frame_router\
+        serial_link_triple_buffered_object\
+        serial_link_transport
\ No newline at end of file
diff --git a/quantum/serial_link/tests/transport_tests.cpp b/quantum/serial_link/tests/transport_tests.cpp
new file mode 100644
index 000000000..21b7b165f
--- /dev/null
+++ b/quantum/serial_link/tests/transport_tests.cpp
@@ -0,0 +1,188 @@
+/*
+The MIT License (MIT)
+
+Copyright (c) 2016 Fred Sundvik
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#include "gtest/gtest.h"
+#include "gmock/gmock.h"
+
+using testing::_;
+using testing::ElementsAreArray;
+using testing::Args;
+
+extern "C" {
+#include "serial_link/protocol/transport.h"
+}
+
+struct test_object1 {
+    uint32_t test;
+};
+
+struct test_object2 {
+    uint32_t test1;
+    uint32_t test2;
+};
+
+MASTER_TO_ALL_SLAVES_OBJECT(master_to_slave, test_object1);
+MASTER_TO_SINGLE_SLAVE_OBJECT(master_to_single_slave, test_object1);
+SLAVE_TO_MASTER_OBJECT(slave_to_master, test_object1);
+
+static remote_object_t* test_remote_objects[] = {
+    REMOTE_OBJECT(master_to_slave),
+    REMOTE_OBJECT(master_to_single_slave),
+    REMOTE_OBJECT(slave_to_master),
+};
+
+class Transport : public testing::Test {
+public:
+    Transport() {
+        Instance = this;
+        add_remote_objects(test_remote_objects, sizeof(test_remote_objects) / sizeof(remote_object_t*));
+    }
+
+    ~Transport() {
+        Instance = nullptr;
+        reinitialize_serial_link_transport();
+    }
+
+    MOCK_METHOD0(signal_data_written, void ());
+    MOCK_METHOD1(router_send_frame, void (uint8_t destination));
+
+    void router_send_frame(uint8_t destination, uint8_t* data, uint16_t size) {
+        router_send_frame(destination);
+        std::copy(data, data + size, std::back_inserter(sent_data));
+    }
+
+    static Transport* Instance;
+
+    std::vector<uint8_t> sent_data;
+};
+
+Transport* Transport::Instance = nullptr;
+
+extern "C" {
+void signal_data_written(void) {
+    Transport::Instance->signal_data_written();
+}
+
+void router_send_frame(uint8_t destination, uint8_t* data, uint16_t size) {
+    Transport::Instance->router_send_frame(destination, data, size);
+}
+}
+
+TEST_F(Transport, write_to_local_signals_an_event) {
+    begin_write_master_to_slave();
+    EXPECT_CALL(*this, signal_data_written());
+    end_write_master_to_slave();
+    begin_write_slave_to_master();
+    EXPECT_CALL(*this, signal_data_written());
+    end_write_slave_to_master();
+    begin_write_master_to_single_slave(1);
+    EXPECT_CALL(*this, signal_data_written());
+    end_write_master_to_single_slave(1);
+}
+
+TEST_F(Transport, writes_from_master_to_all_slaves) {
+    update_transport();
+    test_object1* obj = begin_write_master_to_slave();
+    obj->test = 5;
+    EXPECT_CALL(*this, signal_data_written());
+    end_write_master_to_slave();
+    EXPECT_CALL(*this, router_send_frame(0xFF));
+    update_transport();
+    transport_recv_frame(0, sent_data.data(), sent_data.size());
+    test_object1* obj2 = read_master_to_slave();
+    EXPECT_NE(obj2, nullptr);
+    EXPECT_EQ(obj2->test, 5);
+}
+
+TEST_F(Transport, writes_from_slave_to_master) {
+    update_transport();
+    test_object1* obj = begin_write_slave_to_master();
+    obj->test = 7;
+    EXPECT_CALL(*this, signal_data_written());
+    end_write_slave_to_master();
+    EXPECT_CALL(*this, router_send_frame(0));
+    update_transport();
+    transport_recv_frame(3, sent_data.data(), sent_data.size());
+    test_object1* obj2 = read_slave_to_master(2);
+    EXPECT_EQ(read_slave_to_master(0), nullptr);
+    EXPECT_NE(obj2, nullptr);
+    EXPECT_EQ(obj2->test, 7);
+}
+
+TEST_F(Transport, writes_from_master_to_single_slave) {
+    update_transport();
+    test_object1* obj = begin_write_master_to_single_slave(3);
+    obj->test = 7;
+    EXPECT_CALL(*this, signal_data_written());
+    end_write_master_to_single_slave(3);
+    EXPECT_CALL(*this, router_send_frame(4));
+    update_transport();
+    transport_recv_frame(0, sent_data.data(), sent_data.size());
+    test_object1* obj2 = read_master_to_single_slave();
+    EXPECT_NE(obj2, nullptr);
+    EXPECT_EQ(obj2->test, 7);
+}
+
+TEST_F(Transport, ignores_object_with_invalid_id) {
+    update_transport();
+    test_object1* obj = begin_write_master_to_single_slave(3);
+    obj->test = 7;
+    EXPECT_CALL(*this, signal_data_written());
+    end_write_master_to_single_slave(3);
+    EXPECT_CALL(*this, router_send_frame(4));
+    update_transport();
+    sent_data[sent_data.size() - 1] = 44;
+    transport_recv_frame(0, sent_data.data(), sent_data.size());
+    test_object1* obj2 = read_master_to_single_slave();
+    EXPECT_EQ(obj2, nullptr);
+}
+
+TEST_F(Transport, ignores_object_with_size_too_small) {
+    update_transport();
+    test_object1* obj = begin_write_master_to_slave();
+    obj->test = 7;
+    EXPECT_CALL(*this, signal_data_written());
+    end_write_master_to_slave();
+    EXPECT_CALL(*this, router_send_frame(_));
+    update_transport();
+    sent_data[sent_data.size() - 2] = 0;
+    transport_recv_frame(0, sent_data.data(), sent_data.size() - 1);
+    test_object1* obj2 = read_master_to_slave();
+    EXPECT_EQ(obj2, nullptr);
+}
+
+TEST_F(Transport, ignores_object_with_size_too_big) {
+    update_transport();
+    test_object1* obj = begin_write_master_to_slave();
+    obj->test = 7;
+    EXPECT_CALL(*this, signal_data_written());
+    end_write_master_to_slave();
+    EXPECT_CALL(*this, router_send_frame(_));
+    update_transport();
+    sent_data.resize(sent_data.size() + 22);
+    sent_data[sent_data.size() - 1] = 0;
+    transport_recv_frame(0, sent_data.data(), sent_data.size());
+    test_object1* obj2 = read_master_to_slave();
+    EXPECT_EQ(obj2, nullptr);
+}
diff --git a/quantum/serial_link/tests/triple_buffered_object_tests.cpp b/quantum/serial_link/tests/triple_buffered_object_tests.cpp
new file mode 100644
index 000000000..7724bbee9
--- /dev/null
+++ b/quantum/serial_link/tests/triple_buffered_object_tests.cpp
@@ -0,0 +1,84 @@
+/*
+The MIT License (MIT)
+
+Copyright (c) 2016 Fred Sundvik
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#include "gtest/gtest.h"
+extern "C" {
+#include "serial_link/protocol/triple_buffered_object.h"
+}
+
+struct test_object{
+    uint8_t state;
+    uint32_t buffer[3];
+};
+
+test_object test_object;
+
+class TripleBufferedObject : public testing::Test {
+public:
+    TripleBufferedObject() {
+        triple_buffer_init((triple_buffer_object_t*)&test_object);
+    }
+};
+
+TEST_F(TripleBufferedObject, writes_and_reads_object) {
+    *triple_buffer_begin_write(&test_object) = 0x3456ABCC;
+    triple_buffer_end_write(&test_object);
+    EXPECT_EQ(*triple_buffer_read(&test_object), 0x3456ABCC);
+}
+
+TEST_F(TripleBufferedObject, does_not_read_empty) {
+    EXPECT_EQ(triple_buffer_read(&test_object), nullptr);
+}
+
+TEST_F(TripleBufferedObject, writes_twice_and_reads_object) {
+    *triple_buffer_begin_write(&test_object) = 0x3456ABCC;
+    triple_buffer_end_write(&test_object);
+    *triple_buffer_begin_write(&test_object) = 0x44778899;
+    triple_buffer_end_write(&test_object);
+    EXPECT_EQ(*triple_buffer_read(&test_object), 0x44778899);
+}
+
+TEST_F(TripleBufferedObject, performs_another_write_in_the_middle_of_read) {
+    *triple_buffer_begin_write(&test_object) = 1;
+    triple_buffer_end_write(&test_object);
+    uint32_t* read = triple_buffer_read(&test_object);
+    *triple_buffer_begin_write(&test_object) = 2;
+    triple_buffer_end_write(&test_object);
+    EXPECT_EQ(*read, 1);
+    EXPECT_EQ(*triple_buffer_read(&test_object), 2);
+    EXPECT_EQ(triple_buffer_read(&test_object), nullptr);
+}
+
+TEST_F(TripleBufferedObject, performs_two_writes_in_the_middle_of_read) {
+    *triple_buffer_begin_write(&test_object) = 1;
+    triple_buffer_end_write(&test_object);
+    uint32_t* read = triple_buffer_read(&test_object);
+    *triple_buffer_begin_write(&test_object) = 2;
+    triple_buffer_end_write(&test_object);
+    *triple_buffer_begin_write(&test_object) = 3;
+    triple_buffer_end_write(&test_object);
+    EXPECT_EQ(*read, 1);
+    EXPECT_EQ(*triple_buffer_read(&test_object), 3);
+    EXPECT_EQ(triple_buffer_read(&test_object), nullptr);
+}
diff --git a/quantum/template/Makefile b/quantum/template/Makefile
index 2efa69138..4e2a6f00f 100644
--- a/quantum/template/Makefile
+++ b/quantum/template/Makefile
@@ -1,139 +1,3 @@
-#----------------------------------------------------------------------------
-# On command line:
-#
-# make all = Make software.
-#
-# make clean = Clean out built project files.
-#
-# make coff = Convert ELF to AVR COFF.
-#
-# make extcoff = Convert ELF to AVR Extended COFF.
-#
-# make program = Download the hex file to the device.
-#                Please customize your programmer settings(PROGRAM_CMD)
-#
-# make teensy = Download the hex file to the device, using teensy_loader_cli.
-#               (must have teensy_loader_cli installed).
-#
-# make dfu = Download the hex file to the device, using dfu-programmer (must
-#            have dfu-programmer installed).
-#
-# make flip = Download the hex file to the device, using Atmel FLIP (must
-#             have Atmel FLIP installed).
-#
-# make dfu-ee = Download the eeprom file to the device, using dfu-programmer
-#               (must have dfu-programmer installed).
-#
-# make flip-ee = Download the eeprom file to the device, using Atmel FLIP
-#                (must have Atmel FLIP installed).
-#
-# make debug = Start either simulavr or avarice as specified for debugging, 
-#              with avr-gdb or avr-insight as the front end for debugging.
-#
-# make filename.s = Just compile filename.c into the assembler code only.
-#
-# make filename.i = Create a preprocessed source file for use in submitting
-#                   bug reports to the GCC project.
-#
-# To rebuild project do "make clean" then "make all".
-#----------------------------------------------------------------------------
-
-# Target file name (without extension).
-TARGET = %KEYBOARD%
-
-
-# Directory common source filess exist
-TOP_DIR = ../..
-TMK_DIR = ../../tmk_core
-
-# Directory keyboard dependent files exist
-TARGET_DIR = .
-
-# # project specific files
-SRC = %KEYBOARD%.c
-
-ifdef KEYMAP
-    SRC := keymaps/$(KEYMAP).c $(SRC)
-else
-    SRC := keymaps/default.c $(SRC)
-endif
-
-CONFIG_H = config.h
-
-# MCU name
-#MCU = at90usb1287
-MCU = atmega32u4
-
-# Processor frequency.
-#     This will define a symbol, F_CPU, in all source code files equal to the
-#     processor frequency in Hz. You can then use this symbol in your source code to
-#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
-#     automatically to create a 32-bit value in your source code.
-#
-#     This will be an integer division of F_USB below, as it is sourced by
-#     F_USB after it has run through any CPU prescalers. Note that this value
-#     does not *change* the processor frequency - it should merely be updated to
-#     reflect the processor speed set externally so that the code can use accurate
-#     software delays.
-F_CPU = 16000000
-
-
-#
-# LUFA specific
-#
-# Target architecture (see library "Board Types" documentation).
-ARCH = AVR8
-
-# Input clock frequency.
-#     This will define a symbol, F_USB, in all source code files equal to the
-#     input clock frequency (before any prescaling is performed) in Hz. This value may
-#     differ from F_CPU if prescaling is used on the latter, and is required as the
-#     raw input clock is fed directly to the PLL sections of the AVR for high speed
-#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
-#     at the end, this will be done automatically to create a 32-bit value in your
-#     source code.
-#
-#     If no clock division is performed on the input clock inside the AVR (via the
-#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
-F_USB = $(F_CPU)
-
-# Interrupt driven control endpoint task(+60)
-OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
-
-
-# Boot Section Size in *bytes*
-#   Teensy halfKay   512
-#   Teensy++ halfKay 1024
-#   Atmel DFU loader 4096
-#   LUFA bootloader  4096
-#   USBaspLoader     2048
-OPT_DEFS += -DBOOTLOADER_SIZE=512
-
-
-# Build Options
-#   comment out to disable the options.
-#
-BOOTMAGIC_ENABLE = yes  # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE = yes   # Mouse keys(+4700)
-EXTRAKEY_ENABLE = yes   # Audio control and System control(+450)
-CONSOLE_ENABLE = yes    # Console for debug(+400)
-COMMAND_ENABLE = yes    # Commands for debug and configuration
-# Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-# SLEEP_LED_ENABLE = yes  # Breathing sleep LED during USB suspend
-# NKRO_ENABLE = yes             # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
-# BACKLIGHT_ENABLE = yes  # Enable keyboard backlight functionality
-# MIDI_ENABLE = YES             # MIDI controls
-# UNICODE_ENABLE = YES          # Unicode
-# BLUETOOTH_ENABLE = yes # Enable Bluetooth with the Adafruit EZ-Key HID
-
-
-# Optimize size but this may cause error "relocation truncated to fit"
-#EXTRALDFLAGS = -Wl,--relax
-
-# Search Path
-VPATH += $(TARGET_DIR)
-VPATH += $(TOP_DIR)
-VPATH += $(TMK_DIR)
-
-include $(TOP_DIR)/quantum/quantum.mk
-
+ifndef MAKEFILE_INCLUDED
+        include ../../Makefile
+endif
\ No newline at end of file
diff --git a/quantum/template/config.h b/quantum/template/config.h
index 7d6149f43..b02f0c7eb 100644
--- a/quantum/template/config.h
+++ b/quantum/template/config.h
@@ -32,34 +32,115 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define MATRIX_ROWS 2
 #define MATRIX_COLS 3
 
-// Planck PCB default pin-out
-// Change this to how you wired your keyboard
-// COLS: Left to right, ROWS: Top to bottom
-#define COLS (int []){ F1, F0, B0 }
-#define ROWS (int []){ D0, D5 }
+/*
+ * Keyboard Matrix Assignments
+ *
+ * Change this to how you wired your keyboard
+ * COLS: AVR pins used for columns, left to right
+ * ROWS: AVR pins used for rows, top to bottom
+ * DIODE_DIRECTION: COL2ROW = COL = Anode (+), ROW = Cathode (-, marked on diode)
+ *                  ROW2COL = ROW = Anode (+), COL = Cathode (-, marked on diode)
+ *
+*/
+#define MATRIX_ROW_PINS { D0, D5 }
+#define MATRIX_COL_PINS { F1, F0, B0 }
+#define UNUSED_PINS
 
 /* COL2ROW or ROW2COL */
 #define DIODE_DIRECTION COL2ROW
+ 
+// #define BACKLIGHT_PIN B7
+// #define BACKLIGHT_BREATHING
+// #define BACKLIGHT_LEVELS 3
+
 
-/* define if matrix has ghost */
+/* Debounce reduces chatter (unintended double-presses) - set 0 if debouncing is not needed */
+#define DEBOUNCING_DELAY 5
+
+/* define if matrix has ghost (lacks anti-ghosting diodes) */
 //#define MATRIX_HAS_GHOST
 
 /* number of backlight levels */
-#define BACKLIGHT_LEVELS 3
-
-/* Set 0 if debouncing isn't needed */
-#define DEBOUNCE    5
 
 /* Mechanical locking support. Use KC_LCAP, KC_LNUM or KC_LSCR instead in keymap */
 #define LOCKING_SUPPORT_ENABLE
 /* Locking resynchronize hack */
 #define LOCKING_RESYNC_ENABLE
 
-/* key combination for command */
+/*
+ * Force NKRO
+ *
+ * Force NKRO (nKey Rollover) to be enabled by default, regardless of the saved
+ * state in the bootmagic EEPROM settings. (Note that NKRO must be enabled in the
+ * makefile for this to work.)
+ *
+ * If forced on, NKRO can be disabled via magic key (default = LShift+RShift+N)
+ * until the next keyboard reset.
+ *
+ * NKRO may prevent your keystrokes from being detected in the BIOS, but it is
+ * fully operational during normal computer usage.
+ *
+ * For a less heavy-handed approach, enable NKRO via magic key (LShift+RShift+N)
+ * or via bootmagic (hold SPACE+N while plugging in the keyboard). Once set by
+ * bootmagic, NKRO mode will always be enabled until it is toggled again during a
+ * power-up.
+ *
+ */
+//#define FORCE_NKRO
+
+/*
+ * Magic Key Options
+ *
+ * Magic keys are hotkey commands that allow control over firmware functions of
+ * the keyboard. They are best used in combination with the HID Listen program,
+ * found here: https://www.pjrc.com/teensy/hid_listen.html
+ *
+ * The options below allow the magic key functionality to be changed. This is
+ * useful if your keyboard/keypad is missing keys and you want magic key support.
+ *
+ */
+
+/* key combination for magic key command */
 #define IS_COMMAND() ( \
     keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
 )
 
+/* control how magic key switches layers */
+//#define MAGIC_KEY_SWITCH_LAYER_WITH_FKEYS  true
+//#define MAGIC_KEY_SWITCH_LAYER_WITH_NKEYS  true
+//#define MAGIC_KEY_SWITCH_LAYER_WITH_CUSTOM false
+
+/* override magic key keymap */
+//#define MAGIC_KEY_SWITCH_LAYER_WITH_FKEYS
+//#define MAGIC_KEY_SWITCH_LAYER_WITH_NKEYS
+//#define MAGIC_KEY_SWITCH_LAYER_WITH_CUSTOM
+//#define MAGIC_KEY_HELP1          H
+//#define MAGIC_KEY_HELP2          SLASH
+//#define MAGIC_KEY_DEBUG          D
+//#define MAGIC_KEY_DEBUG_MATRIX   X
+//#define MAGIC_KEY_DEBUG_KBD      K
+//#define MAGIC_KEY_DEBUG_MOUSE    M
+//#define MAGIC_KEY_VERSION        V
+//#define MAGIC_KEY_STATUS         S
+//#define MAGIC_KEY_CONSOLE        C
+//#define MAGIC_KEY_LAYER0_ALT1    ESC
+//#define MAGIC_KEY_LAYER0_ALT2    GRAVE
+//#define MAGIC_KEY_LAYER0         0
+//#define MAGIC_KEY_LAYER1         1
+//#define MAGIC_KEY_LAYER2         2
+//#define MAGIC_KEY_LAYER3         3
+//#define MAGIC_KEY_LAYER4         4
+//#define MAGIC_KEY_LAYER5         5
+//#define MAGIC_KEY_LAYER6         6
+//#define MAGIC_KEY_LAYER7         7
+//#define MAGIC_KEY_LAYER8         8
+//#define MAGIC_KEY_LAYER9         9
+//#define MAGIC_KEY_BOOTLOADER     PAUSE
+//#define MAGIC_KEY_LOCK           CAPS
+//#define MAGIC_KEY_EEPROM         E
+//#define MAGIC_KEY_NKRO           N
+//#define MAGIC_KEY_SLEEP_LED      Z
+
 /*
  * Feature disable options
  *  These options are also useful to firmware size reduction.
diff --git a/quantum/template/keymaps/default/Makefile b/quantum/template/keymaps/default/Makefile
new file mode 100644
index 000000000..f4671a9d1
--- /dev/null
+++ b/quantum/template/keymaps/default/Makefile
@@ -0,0 +1,21 @@
+# Build Options
+#   change to "no" to disable the options, or define them in the Makefile in 
+#   the appropriate keymap folder that will get included automatically
+#
+BOOTMAGIC_ENABLE = no       # Virtual DIP switch configuration(+1000)
+MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
+CONSOLE_ENABLE = no         # Console for debug(+400)
+COMMAND_ENABLE = yes        # Commands for debug and configuration
+NKRO_ENABLE = yes           # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
+MIDI_ENABLE = no            # MIDI controls
+AUDIO_ENABLE = no           # Audio output on port C6
+UNICODE_ENABLE = no         # Unicode
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
+RGBLIGHT_ENABLE = no        # Enable WS2812 RGB underlight.  Do not enable this with audio at the same time.
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
+
+ifndef QUANTUM_DIR
+        include ../../../../Makefile
+endif
\ No newline at end of file
diff --git a/quantum/template/keymaps/default/config.h b/quantum/template/keymaps/default/config.h
new file mode 100644
index 000000000..df06a2620
--- /dev/null
+++ b/quantum/template/keymaps/default/config.h
@@ -0,0 +1,8 @@
+#ifndef CONFIG_USER_H
+#define CONFIG_USER_H
+
+#include "../../config.h"
+
+// place overrides here
+
+#endif
\ No newline at end of file
diff --git a/quantum/template/keymaps/default.c b/quantum/template/keymaps/default/keymap.c
index 4121fd860..e28a4723e 100644
--- a/quantum/template/keymaps/default.c
+++ b/quantum/template/keymaps/default/keymap.c
@@ -1,6 +1,3 @@
-// This is the canonical layout file for the Quantum project. If you want to add another keyboard,
-// this is the style you want to emulate.
-
 #include "%KEYBOARD%.h"
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
@@ -28,3 +25,20 @@ const macro_t *action_get_macro(keyrecord_t *record, uint8_t id, uint8_t opt)
       }
     return MACRO_NONE;
 };
+
+
+void matrix_init_user(void) {
+
+}
+
+void matrix_scan_user(void) {
+
+}
+
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+  return true;
+}
+
+void led_set_user(uint8_t usb_led) {
+
+}
\ No newline at end of file
diff --git a/quantum/template/keymaps/default/readme.md b/quantum/template/keymaps/default/readme.md
new file mode 100644
index 000000000..21aa663d5
--- /dev/null
+++ b/quantum/template/keymaps/default/readme.md
@@ -0,0 +1 @@
+# The default keymap for %KEYBOARD%
\ No newline at end of file
diff --git a/quantum/template/README.md b/quantum/template/readme.md
index dc163a2f4..b16f4cd76 100644
--- a/quantum/template/README.md
+++ b/quantum/template/readme.md
@@ -3,22 +3,26 @@
 
 ## Quantum MK Firmware
 
-For the full Quantum feature list, see [the parent README.md](/README.md).
+For the full Quantum feature list, see [the parent readme](/).
 
 ## Building
 
-Download or clone the whole firmware and navigate to the keyboard/%KEYBOARD% folder. Once your dev env is setup, you'll be able to type `make` to generate your .hex - you can then use the Teensy Loader to program your .hex file. 
+Download or clone the whole firmware and navigate to the keyboards/%KEYBOARD% folder. Once your dev env is setup, you'll be able to type `make` to generate your .hex - you can then use the Teensy Loader to program your .hex file. 
 
 Depending on which keymap you would like to use, you will have to compile slightly differently.
 
 ### Default
-To build with the default keymap, simply run `make`.
+
+To build with the default keymap, simply run `make default`.
 
 ### Other Keymaps
-Several version of keymap are available in advance but you are recommended to define your favorite layout yourself. To define your own keymap create file named `<name>.c` and see keymap document (you can find in top README.md) and existent keymap files.
 
-To build the firmware binary hex file with a keymap just do `make` with `KEYMAP` option like:
+Several version of keymap are available in advance but you are recommended to define your favorite layout yourself. To define your own keymap create a folder with the name of your keymap in the keymaps folder, and see keymap documentation (you can find in top readme.md) and existant keymap files.
+
+To build the firmware binary hex file with a keymap just do `make` with a keymap like this:
+
 ```
-$ make KEYMAP=[default|jack|<name>]
+$ make [default|jack|<name>]
 ```
-Keymaps follow the format **__\<name\>.c__** and are stored in the `keymaps` folder.
\ No newline at end of file
+
+Keymaps follow the format **__\<name\>.c__** and are stored in the `keymaps` folder.
diff --git a/quantum/template/rules.mk b/quantum/template/rules.mk
new file mode 100644
index 000000000..55898147d
--- /dev/null
+++ b/quantum/template/rules.mk
@@ -0,0 +1,67 @@
+# MCU name
+#MCU = at90usb1287
+MCU = atmega32u4
+
+# Processor frequency.
+#     This will define a symbol, F_CPU, in all source code files equal to the
+#     processor frequency in Hz. You can then use this symbol in your source code to
+#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
+#     automatically to create a 32-bit value in your source code.
+#
+#     This will be an integer division of F_USB below, as it is sourced by
+#     F_USB after it has run through any CPU prescalers. Note that this value
+#     does not *change* the processor frequency - it should merely be updated to
+#     reflect the processor speed set externally so that the code can use accurate
+#     software delays.
+F_CPU = 16000000
+
+
+#
+# LUFA specific
+#
+# Target architecture (see library "Board Types" documentation).
+ARCH = AVR8
+
+# Input clock frequency.
+#     This will define a symbol, F_USB, in all source code files equal to the
+#     input clock frequency (before any prescaling is performed) in Hz. This value may
+#     differ from F_CPU if prescaling is used on the latter, and is required as the
+#     raw input clock is fed directly to the PLL sections of the AVR for high speed
+#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
+#     at the end, this will be done automatically to create a 32-bit value in your
+#     source code.
+#
+#     If no clock division is performed on the input clock inside the AVR (via the
+#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
+F_USB = $(F_CPU)
+
+# Interrupt driven control endpoint task(+60)
+OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
+
+
+# Boot Section Size in *bytes*
+#   Teensy halfKay   512
+#   Teensy++ halfKay 1024
+#   Atmel DFU loader 4096
+#   LUFA bootloader  4096
+#   USBaspLoader     2048
+OPT_DEFS += -DBOOTLOADER_SIZE=512
+
+
+# Build Options
+#   change yes to no to disable
+#
+BOOTMAGIC_ENABLE ?= no      # Virtual DIP switch configuration(+1000)
+MOUSEKEY_ENABLE ?= yes       # Mouse keys(+4700)
+EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+CONSOLE_ENABLE ?= yes        # Console for debug(+400)
+COMMAND_ENABLE ?= yes        # Commands for debug and configuration
+# Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
+SLEEP_LED_ENABLE ?= no       # Breathing sleep LED during USB suspend
+# if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE ?= no            # USB Nkey Rollover
+BACKLIGHT_ENABLE ?= no       # Enable keyboard backlight functionality on B7 by default
+MIDI_ENABLE ?= no            # MIDI controls
+UNICODE_ENABLE ?= no         # Unicode
+BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+AUDIO_ENABLE ?= no           # Audio output on port C6
diff --git a/quantum/template/template.c b/quantum/template/template.c
index 7be7dfc3d..5ef349583 100644
--- a/quantum/template/template.c
+++ b/quantum/template/template.c
@@ -1,29 +1,28 @@
 #include "%KEYBOARD%.h"
 
-__attribute__ ((weak))
-void * matrix_init_user(void) {
-        // leave these blank
-};
-
-__attribute__ ((weak))
-void * matrix_scan_user(void) {
-        // leave these blank
-};
-
-void * matrix_init_kb(void) {
+void matrix_init_kb(void) {
         // put your keyboard start-up code here
         // runs once when the firmware starts up
 
-        if (matrix_init_user) {
-                (*matrix_init_user)();
-        }
-};
+        matrix_init_user();
+}
 
-void * matrix_scan_kb(void) {
+void matrix_scan_kb(void) {
         // put your looping keyboard code here
         // runs every cycle (a lot)
 
-        if (matrix_scan_user) {
-                (*matrix_scan_user)();
-        }
-};
\ No newline at end of file
+        matrix_scan_user();
+}
+
+bool process_record_kb(uint16_t keycode, keyrecord_t *record) {
+        // put your per-action keyboard code here
+        // runs for every action, just before processing by the firmware
+
+        return process_record_user(keycode, record);
+}
+
+void led_set_kb(uint8_t usb_led) {
+        // put your keyboard LED indicator (ex: Caps Lock LED) toggling code here
+
+        led_set_user(usb_led);
+}
diff --git a/quantum/template/template.h b/quantum/template/template.h
index d4d78e4c9..cd78a54e3 100644
--- a/quantum/template/template.h
+++ b/quantum/template/template.h
@@ -1,10 +1,7 @@
 #ifndef %KEYBOARD_UPPERCASE%_H
 #define %KEYBOARD_UPPERCASE%_H
 
-#include "matrix.h"
-#include "keymap_common.h"
-#include "backlight.h"
-#include <stddef.h>
+#include "quantum.h"
 
 // This a shortcut to help you visually see your layout.
 // The following is an example using the Planck MIT layout
@@ -12,14 +9,11 @@
 // The second converts the arguments into a two-dimensional array
 #define KEYMAP( \
     k00, k01, k02, \
-      k10,  k11,   \
+      k10,  k11   \
 ) \
 { \
     { k00, k01,   k02 }, \
     { k10, KC_NO, k11 }, \
-} 
+}
 
-void * matrix_init_user(void);
-void * matrix_scan_user(void);
-
-#endif
\ No newline at end of file
+#endif
diff --git a/quantum/tools/eeprom_reset.hex b/quantum/tools/eeprom_reset.hex
new file mode 100644
index 000000000..a8a75389f
--- /dev/null
+++ b/quantum/tools/eeprom_reset.hex
@@ -0,0 +1,9 @@
+:10000000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF00
+:10001000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF0
+:10002000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFE0
+:10003000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFD0
+:10004000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFC0
+:10005000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFB0
+:10006000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFA0
+:10007000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF90
+:00000001FF
diff --git a/quantum/tools/readme.md b/quantum/tools/readme.md
new file mode 100644
index 000000000..5f355256d
--- /dev/null
+++ b/quantum/tools/readme.md
@@ -0,0 +1,6 @@
+`eeprom_reset.hex` is to reset the eeprom on the Atmega32u4, like this:
+
+    dfu-programmer atmega32u4 erase
+    dfu-programmer atmega32u4 flash --eeprom eeprom_reset.hex
+
+ You'll need to reflash afterwards, because DFU requires the flash to be erased before messing with the eeprom.
diff --git a/quantum/variable_trace.c b/quantum/variable_trace.c
new file mode 100644
index 000000000..de580244c
--- /dev/null
+++ b/quantum/variable_trace.c
@@ -0,0 +1,110 @@
+#include "variable_trace.h"
+#include <stddef.h>
+#include <string.h>
+
+#ifdef NO_PRINT
+#error "You need undef NO_PRINT to use the variable trace feature"
+#endif
+
+#ifndef CONSOLE_ENABLE
+#error "The console needs to be enabled in the makefile to use the variable trace feature"
+#endif
+
+
+#define NUM_TRACED_VARIABLES 1
+#ifndef MAX_VARIABLE_TRACE_SIZE
+    #define MAX_VARIABLE_TRACE_SIZE 4
+#endif
+
+typedef struct {
+    const char* name;
+    void* addr;
+    unsigned size;
+    const char* func;
+    int line;
+    uint8_t last_value[MAX_VARIABLE_TRACE_SIZE];
+
+} traced_variable_t;
+
+static traced_variable_t traced_variables[NUM_TRACED_VARIABLES];
+
+void add_traced_variable(const char* name, void* addr, unsigned size, const char* func, int line) {
+    verify_traced_variables(func, line);
+    if (size > MAX_VARIABLE_TRACE_SIZE) {
+#if defined(__AVR__)
+       xprintf("Traced variable \"%S\" exceeds the maximum size %d\n", name, size);
+#else
+       xprintf("Traced variable \"%s\" exceeds the maximum size %d\n", name, size);
+#endif
+       size = MAX_VARIABLE_TRACE_SIZE;
+    }
+    int index = -1;
+    for (int i = 0; i < NUM_TRACED_VARIABLES; i++) {
+        if (index == -1 && traced_variables[i].addr == NULL){
+            index = i;
+        }
+        else if (strcmp_P(name, traced_variables[i].name)==0) {
+            index = i;
+            break;
+        }
+    }
+
+    if (index == -1) {
+        xprintf("You can only trace %d variables at the same time\n", NUM_TRACED_VARIABLES);
+        return;
+    }
+
+    traced_variable_t* t = &traced_variables[index];
+    t->name = name;
+    t->addr = addr;
+    t->size = size;
+    t->func = func;
+    t->line = line;
+    memcpy(&t->last_value[0], addr, size);
+
+}
+
+void remove_traced_variable(const char* name, const char* func, int line) {
+    verify_traced_variables(func, line);
+    for (int i = 0; i < NUM_TRACED_VARIABLES; i++) {
+        if (strcmp_P(name, traced_variables[i].name)==0) {
+            traced_variables[i].name = 0;
+            traced_variables[i].addr = NULL;
+            break;
+        }
+    }
+}
+
+void verify_traced_variables(const char* func, int line) {
+    for (int i = 0; i < NUM_TRACED_VARIABLES; i++) {
+        traced_variable_t* t = &traced_variables[i];
+        if (t->addr != NULL && t->name != NULL) {
+            if (memcmp(t->last_value, t->addr, t->size)!=0){
+#if defined(__AVR__)
+               xprintf("Traced variable \"%S\" has been modified\n", t->name);
+               xprintf("Between %S:%d\n", t->func, t->line);
+               xprintf("And %S:%d\n", func, line);
+
+#else
+               xprintf("Traced variable \"%s\" has been modified\n", t->name);
+               xprintf("Between %s:%d\n", t->func, t->line);
+               xprintf("And %s:%d\n", func, line);
+#endif
+               xprintf("Previous value ");
+               for (int j=0; j<t->size;j++) {
+                   print_hex8(t->last_value[j]);
+               }
+               xprintf("\nNew value ");
+               uint8_t* addr = (uint8_t*)(t->addr);
+               for (int j=0; j<t->size;j++) {
+                   print_hex8(addr[j]);
+               }
+               xprintf("\n");
+               memcpy(t->last_value, addr, t->size);
+           }
+        }
+
+        t->func = func;
+        t->line = line;
+    }
+}
diff --git a/quantum/variable_trace.h b/quantum/variable_trace.h
new file mode 100644
index 000000000..46bd82786
--- /dev/null
+++ b/quantum/variable_trace.h
@@ -0,0 +1,34 @@
+#ifndef VARIABLE_TRACE_H
+#define VARIABLE_TRACE_H
+
+// For more information about the variable tracing see the readme.
+
+#include "print.h"
+
+#ifdef NUM_TRACED_VARIABLES
+
+// Start tracing a variable at the memory address addr
+// The name can be anything and is used only for reporting
+// The size should usually be the same size as the variable you are interested in
+#define ADD_TRACED_VARIABLE(name, addr, size) \
+    add_traced_variable(PSTR(name), (void*)addr, size, PSTR(__FILE__), __LINE__)
+
+// Stop tracing the variable with the given name
+#define REMOVE_TRACED_VARIABLE(name) remove_traced_variable(PSTR(name), PSTR(__FILE__), __LINE__)
+
+// Call to get messages when the variable has been changed
+#define VERIFY_TRACED_VARIABLES() verify_traced_variables(PSTR(__FILE__), __LINE__)
+
+#else
+
+#define ADD_TRACED_VARIABLE(name, addr, size)
+#define REMOVE_TRACED_VARIABLE(name)
+#define VERIFY_TRACED_VARIABLES()
+
+#endif
+
+// Don't call directly, use the macros instead
+void add_traced_variable(const char* name, void* addr, unsigned size, const char* func, int line);
+void remove_traced_variable(const char* name, const char* func, int line);
+void verify_traced_variables(const char* func, int line);
+#endif
diff --git a/quantum/visualizer/LICENSE.md b/quantum/visualizer/LICENSE.md
new file mode 100644
index 000000000..22d4c3f08
--- /dev/null
+++ b/quantum/visualizer/LICENSE.md
@@ -0,0 +1,29 @@
+The files in this project are licensed under the MIT license
+It uses the following libraries
+uGFX - with it's own license, see the license.html file in the uGFX subfolder for more information
+tmk_core - is indirectly used and not included in the repository. It's licensed under the GPLv2 license
+Chibios - which is used by tmk_core is licensed under GPLv3.
+
+Therefore the effective license for any project using the library is GPLv3
+
+The MIT License (MIT)
+
+Copyright (c) 2016 Fred Sundvik
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/quantum/visualizer/example_integration/callbacks.c b/quantum/visualizer/example_integration/callbacks.c
new file mode 100644
index 000000000..2539615d6
--- /dev/null
+++ b/quantum/visualizer/example_integration/callbacks.c
@@ -0,0 +1,36 @@
+/*
+The MIT License (MIT)
+
+Copyright (c) 2016 Fred Sundvik
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#include "keyboard.h"
+#include "action_layer.h"
+#include "visualizer.h"
+#include "host.h"
+
+void post_keyboard_init(void) {
+    visualizer_init();
+}
+
+void post_keyboard_task() {
+    visualizer_set_state(default_layer_state, layer_state, host_keyboard_leds());
+}
diff --git a/quantum/visualizer/example_integration/gfxconf.h b/quantum/visualizer/example_integration/gfxconf.h
new file mode 100644
index 000000000..304c5d187
--- /dev/null
+++ b/quantum/visualizer/example_integration/gfxconf.h
@@ -0,0 +1,325 @@
+/**
+ * This file has a different license to the rest of the uGFX system.
+ * You can copy, modify and distribute this file as you see fit.
+ * You do not need to publish your source modifications to this file.
+ * The only thing you are not permitted to do is to relicense it
+ * under a different license.
+ */
+
+/**
+ * Copy this file into your project directory and rename it as gfxconf.h
+ * Edit your copy to turn on the uGFX features you want to use.
+ * The values below are the defaults.
+ *
+ * Only remove the comments from lines where you want to change the
+ * default value. This allows definitions to be included from
+ * driver makefiles when required and provides the best future
+ * compatibility for your project.
+ *
+ * Please use spaces instead of tabs in this file.
+ */
+
+#ifndef _GFXCONF_H
+#define _GFXCONF_H
+
+
+///////////////////////////////////////////////////////////////////////////
+// GOS - One of these must be defined, preferably in your Makefile       //
+///////////////////////////////////////////////////////////////////////////
+#define GFX_USE_OS_CHIBIOS                           TRUE
+//#define GFX_USE_OS_FREERTOS                          FALSE
+//    #define GFX_FREERTOS_USE_TRACE                   FALSE
+//#define GFX_USE_OS_WIN32                             FALSE
+//#define GFX_USE_OS_LINUX                             FALSE
+//#define GFX_USE_OS_OSX                               FALSE
+//#define GFX_USE_OS_ECOS                              FALSE
+//#define GFX_USE_OS_RAWRTOS                           FALSE
+//#define GFX_USE_OS_ARDUINO                           FALSE
+//#define GFX_USE_OS_KEIL                              FALSE
+//#define GFX_USE_OS_CMSIS                             FALSE
+//#define GFX_USE_OS_RAW32                             FALSE
+//    #define INTERRUPTS_OFF()                         optional_code
+//    #define INTERRUPTS_ON()                          optional_code
+// These are not defined by default for some reason
+#define GOS_NEED_X_THREADS      FALSE
+#define GOS_NEED_X_HEAP         FALSE
+
+// Options that (should where relevant) apply to all operating systems
+    #define GFX_NO_INLINE                            FALSE
+//    #define GFX_COMPILER                             GFX_COMPILER_UNKNOWN
+//    #define GFX_CPU                                  GFX_CPU_UNKNOWN
+//    #define GFX_OS_HEAP_SIZE                         0
+//    #define GFX_OS_NO_INIT                           FALSE
+//    #define GFX_OS_INIT_NO_WARNING                   FALSE
+//    #define GFX_OS_PRE_INIT_FUNCTION                 myHardwareInitRoutine
+//    #define GFX_OS_EXTRA_INIT_FUNCTION               myOSInitRoutine
+//    #define GFX_OS_EXTRA_DEINIT_FUNCTION             myOSDeInitRoutine
+
+
+///////////////////////////////////////////////////////////////////////////
+// GDISP                                                                 //
+///////////////////////////////////////////////////////////////////////////
+#define GFX_USE_GDISP                                TRUE
+
+//#define GDISP_NEED_AUTOFLUSH                         FALSE
+//#define GDISP_NEED_TIMERFLUSH                        FALSE
+//#define GDISP_NEED_VALIDATION                        TRUE
+//#define GDISP_NEED_CLIP                              TRUE
+//#define GDISP_NEED_CIRCLE                            FALSE
+//#define GDISP_NEED_ELLIPSE                           FALSE
+//#define GDISP_NEED_ARC                               FALSE
+//#define GDISP_NEED_ARCSECTORS                        FALSE
+//#define GDISP_NEED_CONVEX_POLYGON                    FALSE
+//#define GDISP_NEED_SCROLL                            FALSE
+//#define GDISP_NEED_PIXELREAD                         FALSE
+//#define GDISP_NEED_CONTROL                           FALSE
+//#define GDISP_NEED_QUERY                             FALSE
+//#define GDISP_NEED_MULTITHREAD                       FALSE
+//#define GDISP_NEED_STREAMING                         FALSE
+#define GDISP_NEED_TEXT                              TRUE
+//    #define GDISP_NEED_TEXT_WORDWRAP                 FALSE
+//    #define GDISP_NEED_ANTIALIAS                     FALSE
+//    #define GDISP_NEED_UTF8                          FALSE
+    #define GDISP_NEED_TEXT_KERNING                  TRUE
+//    #define GDISP_INCLUDE_FONT_UI1                   FALSE
+//    #define GDISP_INCLUDE_FONT_UI2                   FALSE            // The smallest preferred font.
+//    #define GDISP_INCLUDE_FONT_LARGENUMBERS          FALSE
+//    #define GDISP_INCLUDE_FONT_DEJAVUSANS10          FALSE
+//    #define GDISP_INCLUDE_FONT_DEJAVUSANS12          FALSE
+//    #define GDISP_INCLUDE_FONT_DEJAVUSANS16          FALSE
+//    #define GDISP_INCLUDE_FONT_DEJAVUSANS20          FALSE
+//    #define GDISP_INCLUDE_FONT_DEJAVUSANS24          FALSE
+//    #define GDISP_INCLUDE_FONT_DEJAVUSANS32          FALSE
+    #define GDISP_INCLUDE_FONT_DEJAVUSANSBOLD12      TRUE
+//    #define GDISP_INCLUDE_FONT_FIXED_10X20           FALSE
+//    #define GDISP_INCLUDE_FONT_FIXED_7X14            FALSE
+    #define GDISP_INCLUDE_FONT_FIXED_5X8             TRUE
+//    #define GDISP_INCLUDE_FONT_DEJAVUSANS12_AA       FALSE
+//    #define GDISP_INCLUDE_FONT_DEJAVUSANS16_AA       FALSE
+//    #define GDISP_INCLUDE_FONT_DEJAVUSANS20_AA       FALSE
+//    #define GDISP_INCLUDE_FONT_DEJAVUSANS24_AA       FALSE
+//    #define GDISP_INCLUDE_FONT_DEJAVUSANS32_AA       FALSE
+//    #define GDISP_INCLUDE_FONT_DEJAVUSANSBOLD12_AA   FALSE
+//    #define GDISP_INCLUDE_USER_FONTS                 FALSE
+
+//#define GDISP_NEED_IMAGE                             FALSE
+//    #define GDISP_NEED_IMAGE_NATIVE                  FALSE
+//    #define GDISP_NEED_IMAGE_GIF                     FALSE
+//    #define GDISP_NEED_IMAGE_BMP                     FALSE
+//        #define GDISP_NEED_IMAGE_BMP_1               FALSE
+//        #define GDISP_NEED_IMAGE_BMP_4               FALSE
+//        #define GDISP_NEED_IMAGE_BMP_4_RLE           FALSE
+//        #define GDISP_NEED_IMAGE_BMP_8               FALSE
+//        #define GDISP_NEED_IMAGE_BMP_8_RLE           FALSE
+//        #define GDISP_NEED_IMAGE_BMP_16              FALSE
+//        #define GDISP_NEED_IMAGE_BMP_24              FALSE
+//        #define GDISP_NEED_IMAGE_BMP_32              FALSE
+//    #define GDISP_NEED_IMAGE_JPG                     FALSE
+//    #define GDISP_NEED_IMAGE_PNG                     FALSE
+//    #define GDISP_NEED_IMAGE_ACCOUNTING              FALSE
+
+//#define GDISP_NEED_PIXMAP                            FALSE
+//    #define GDISP_NEED_PIXMAP_IMAGE                  FALSE
+
+//#define GDISP_DEFAULT_ORIENTATION                    GDISP_ROTATE_LANDSCAPE    // If not defined the native hardware orientation is used.
+//#define GDISP_LINEBUF_SIZE                           128
+//#define GDISP_STARTUP_COLOR                          Black
+#define GDISP_NEED_STARTUP_LOGO                      FALSE
+
+//#define GDISP_TOTAL_DISPLAYS                         1
+
+//#define GDISP_DRIVER_LIST                            GDISPVMT_Win32, GDISPVMT_Win32
+//    #ifdef GDISP_DRIVER_LIST
+//        // For code and speed optimization define as TRUE or FALSE if all controllers have the same capability
+//        #define GDISP_HARDWARE_STREAM_WRITE          FALSE
+//        #define GDISP_HARDWARE_STREAM_READ           FALSE
+//        #define GDISP_HARDWARE_STREAM_POS            FALSE
+//        #define GDISP_HARDWARE_DRAWPIXEL             FALSE
+//        #define GDISP_HARDWARE_CLEARS                FALSE
+//        #define GDISP_HARDWARE_FILLS                 FALSE
+//        #define GDISP_HARDWARE_BITFILLS              FALSE
+//        #define GDISP_HARDWARE_SCROLL                FALSE
+//        #define GDISP_HARDWARE_PIXELREAD             FALSE
+//        #define GDISP_HARDWARE_CONTROL               FALSE
+//        #define GDISP_HARDWARE_QUERY                 FALSE
+//        #define GDISP_HARDWARE_CLIP                  FALSE
+
+        #define GDISP_PIXELFORMAT                    GDISP_PIXELFORMAT_RGB888
+//    #endif
+
+// The custom format is not defined for some reason, so define it as error
+// so we don't get compiler warnings
+#define GDISP_PIXELFORMAT_CUSTOM GDISP_PIXELFORMAT_ERROR
+
+#define GDISP_USE_GFXNET                             FALSE
+//    #define GDISP_GFXNET_PORT                        13001
+//    #define GDISP_GFXNET_CUSTOM_LWIP_STARTUP         FALSE
+//    #define GDISP_DONT_WAIT_FOR_NET_DISPLAY          FALSE
+//    #define GDISP_GFXNET_UNSAFE_SOCKETS              FALSE
+
+
+///////////////////////////////////////////////////////////////////////////
+// GWIN                                                                  //
+///////////////////////////////////////////////////////////////////////////
+#define GFX_USE_GWIN                                 FALSE
+
+//#define GWIN_NEED_WINDOWMANAGER                      FALSE
+//    #define GWIN_REDRAW_IMMEDIATE                    FALSE
+//    #define GWIN_REDRAW_SINGLEOP                     FALSE
+//    #define GWIN_NEED_FLASHING                       FALSE
+//        #define GWIN_FLASHING_PERIOD                 250
+
+//#define GWIN_NEED_CONSOLE                            FALSE
+//    #define GWIN_CONSOLE_USE_HISTORY                 FALSE
+//        #define GWIN_CONSOLE_HISTORY_AVERAGING       FALSE
+//        #define GWIN_CONSOLE_HISTORY_ATCREATE        FALSE
+//    #define GWIN_CONSOLE_ESCSEQ                      FALSE
+//    #define GWIN_CONSOLE_USE_BASESTREAM              FALSE
+//    #define GWIN_CONSOLE_USE_FLOAT                   FALSE
+//#define GWIN_NEED_GRAPH                              FALSE
+//#define GWIN_NEED_GL3D                               FALSE
+
+//#define GWIN_NEED_WIDGET                             FALSE
+//#define GWIN_FOCUS_HIGHLIGHT_WIDTH                   1
+//    #define GWIN_NEED_LABEL                          FALSE
+//        #define GWIN_LABEL_ATTRIBUTE                 FALSE
+//    #define GWIN_NEED_BUTTON                         FALSE
+//        #define GWIN_BUTTON_LAZY_RELEASE             FALSE
+//    #define GWIN_NEED_SLIDER                         FALSE
+//        #define GWIN_SLIDER_NOSNAP                   FALSE
+//        #define GWIN_SLIDER_DEAD_BAND                5
+//        #define GWIN_SLIDER_TOGGLE_INC               20
+//    #define GWIN_NEED_CHECKBOX                       FALSE
+//    #define GWIN_NEED_IMAGE                          FALSE
+//        #define GWIN_NEED_IMAGE_ANIMATION            FALSE
+//    #define GWIN_NEED_RADIO                          FALSE
+//    #define GWIN_NEED_LIST                           FALSE
+//        #define GWIN_NEED_LIST_IMAGES                FALSE
+//    #define GWIN_NEED_PROGRESSBAR                    FALSE
+//        #define GWIN_PROGRESSBAR_AUTO                FALSE
+//    #define GWIN_NEED_KEYBOARD                       FALSE
+//        #define GWIN_KEYBOARD_DEFAULT_LAYOUT         VirtualKeyboard_English1
+//        #define GWIN_NEED_KEYBOARD_ENGLISH1          TRUE
+//    #define GWIN_NEED_TEXTEDIT                       FALSE
+//    #define GWIN_FLAT_STYLING                        FALSE
+//    #define GWIN_WIDGET_TAGS                         FALSE
+
+//#define GWIN_NEED_CONTAINERS                         FALSE
+//    #define GWIN_NEED_CONTAINER                      FALSE
+//    #define GWIN_NEED_FRAME                          FALSE
+//    #define GWIN_NEED_TABSET                         FALSE
+//        #define GWIN_TABSET_TABHEIGHT                18
+
+
+///////////////////////////////////////////////////////////////////////////
+// GEVENT                                                                //
+///////////////////////////////////////////////////////////////////////////
+#define GFX_USE_GEVENT                               FALSE
+
+//#define GEVENT_ASSERT_NO_RESOURCE                    FALSE
+//#define GEVENT_MAXIMUM_SIZE                          32
+//#define GEVENT_MAX_SOURCE_LISTENERS                  32
+
+
+///////////////////////////////////////////////////////////////////////////
+// GTIMER                                                                //
+///////////////////////////////////////////////////////////////////////////
+#define GFX_USE_GTIMER                               FALSE
+
+//#define GTIMER_THREAD_PRIORITY                       HIGH_PRIORITY
+//#define GTIMER_THREAD_WORKAREA_SIZE                  2048
+
+
+///////////////////////////////////////////////////////////////////////////
+// GQUEUE                                                                //
+///////////////////////////////////////////////////////////////////////////
+#define GFX_USE_GQUEUE                               FALSE
+
+//#define GQUEUE_NEED_ASYNC                            FALSE
+//#define GQUEUE_NEED_GSYNC                            FALSE
+//#define GQUEUE_NEED_FSYNC                            FALSE
+//#define GQUEUE_NEED_BUFFERS                          FALSE
+
+///////////////////////////////////////////////////////////////////////////
+// GINPUT                                                                //
+///////////////////////////////////////////////////////////////////////////
+#define GFX_USE_GINPUT                               FALSE
+
+//#define GINPUT_NEED_MOUSE                            FALSE
+//    #define GINPUT_TOUCH_STARTRAW                    FALSE
+//    #define GINPUT_TOUCH_NOTOUCH                     FALSE
+//    #define GINPUT_TOUCH_NOCALIBRATE                 FALSE
+//    #define GINPUT_TOUCH_NOCALIBRATE_GUI             FALSE
+//    #define GINPUT_MOUSE_POLL_PERIOD                 25
+//    #define GINPUT_MOUSE_CLICK_TIME                  300
+//    #define GINPUT_TOUCH_CXTCLICK_TIME               700
+//    #define GINPUT_TOUCH_USER_CALIBRATION_LOAD       FALSE
+//    #define GINPUT_TOUCH_USER_CALIBRATION_SAVE       FALSE
+//    #define GMOUSE_DRIVER_LIST                       GMOUSEVMT_Win32, GMOUSEVMT_Win32
+//#define GINPUT_NEED_KEYBOARD                         FALSE
+//    #define GINPUT_KEYBOARD_POLL_PERIOD              200
+//    #define GKEYBOARD_DRIVER_LIST                    GKEYBOARDVMT_Win32, GKEYBOARDVMT_Win32
+//    #define GKEYBOARD_LAYOUT_OFF                     FALSE
+//        #define GKEYBOARD_LAYOUT_SCANCODE2_US        FALSE
+//#define GINPUT_NEED_TOGGLE                           FALSE
+//#define GINPUT_NEED_DIAL                             FALSE
+
+
+///////////////////////////////////////////////////////////////////////////
+// GFILE                                                                 //
+///////////////////////////////////////////////////////////////////////////
+#define GFX_USE_GFILE                                FALSE
+
+//#define GFILE_NEED_PRINTG                            FALSE
+//#define GFILE_NEED_SCANG                             FALSE
+//#define GFILE_NEED_STRINGS                           FALSE
+//#define GFILE_NEED_FILELISTS                         FALSE
+//#define GFILE_NEED_STDIO                             FALSE
+//#define GFILE_NEED_NOAUTOMOUNT                       FALSE
+//#define GFILE_NEED_NOAUTOSYNC                        FALSE
+
+//#define GFILE_NEED_MEMFS                             FALSE
+//#define GFILE_NEED_ROMFS                             FALSE
+//#define GFILE_NEED_RAMFS                             FALSE
+//#define GFILE_NEED_FATFS                             FALSE
+//#define GFILE_NEED_NATIVEFS                          FALSE
+//#define GFILE_NEED_CHBIOSFS                          FALSE
+
+//#define GFILE_ALLOW_FLOATS                           FALSE
+//#define GFILE_ALLOW_DEVICESPECIFIC                   FALSE
+//#define GFILE_MAX_GFILES                             3
+
+///////////////////////////////////////////////////////////////////////////
+// GADC                                                                  //
+///////////////////////////////////////////////////////////////////////////
+#define GFX_USE_GADC                                 FALSE
+
+//#define GADC_MAX_LOWSPEED_DEVICES                    4
+
+
+///////////////////////////////////////////////////////////////////////////
+// GAUDIO                                                                //
+///////////////////////////////////////////////////////////////////////////
+#define GFX_USE_GAUDIO                               FALSE
+// There seems to be a bug in the ugfx code, the wrong define is used
+// So define it in order to avoid warnings
+#define GFX_USE_GAUDIN                               GFX_USE_GAUDIO
+//    #define GAUDIO_NEED_PLAY                         FALSE
+//    #define GAUDIO_NEED_RECORD                       FALSE
+
+
+///////////////////////////////////////////////////////////////////////////
+// GMISC                                                                 //
+///////////////////////////////////////////////////////////////////////////
+#define GFX_USE_GMISC                                FALSE
+
+//#define GMISC_NEED_ARRAYOPS                          FALSE
+//#define GMISC_NEED_FASTTRIG                          FALSE
+//#define GMISC_NEED_FIXEDTRIG                         FALSE
+//#define GMISC_NEED_INVSQRT                           FALSE
+//    #define GMISC_INVSQRT_MIXED_ENDIAN               FALSE
+//    #define GMISC_INVSQRT_REAL_SLOW                  FALSE
+//#define GMISC_NEED_MATRIXFLOAT2D                     FALSE
+//#define GMISC_NEED_MATRIXFIXED2D                     FALSE
+
+#endif /* _GFXCONF_H */
diff --git a/quantum/visualizer/example_integration/lcd_backlight_hal.c b/quantum/visualizer/example_integration/lcd_backlight_hal.c
new file mode 100644
index 000000000..913131b16
--- /dev/null
+++ b/quantum/visualizer/example_integration/lcd_backlight_hal.c
@@ -0,0 +1,91 @@
+/*
+The MIT License (MIT)
+
+Copyright (c) 2016 Fred Sundvik
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#include "lcd_backlight.h"
+#include "hal.h"
+
+#define RED_PIN 1
+#define GREEN_PIN 2
+#define BLUE_PIN 3
+#define CHANNEL_RED FTM0->CHANNEL[0]
+#define CHANNEL_GREEN FTM0->CHANNEL[1]
+#define CHANNEL_BLUE FTM0->CHANNEL[2]
+
+#define RGB_PORT PORTC
+#define RGB_PORT_GPIO GPIOC
+
+// Base FTM clock selection (72 MHz system clock)
+// @ 0xFFFF period, 72 MHz / (0xFFFF * 2) = Actual period
+// Higher pre-scalar will use the most power (also look the best)
+// Pre-scalar calculations
+// 0 -      72 MHz -> 549 Hz
+// 1 -      36 MHz -> 275 Hz
+// 2 -      18 MHz -> 137 Hz
+// 3 -       9 MHz ->  69 Hz (Slightly visible flicker)
+// 4 -   4 500 kHz ->  34 Hz (Visible flickering)
+// 5 -   2 250 kHz ->  17 Hz
+// 6 -   1 125 kHz ->   9 Hz
+// 7 - 562 500  Hz ->   4 Hz
+// Using a higher pre-scalar without flicker is possible but FTM0_MOD will need to be reduced
+// Which will reduce the brightness range
+#define PRESCALAR_DEFINE 0
+
+void lcd_backlight_hal_init(void) {
+        // Setup Backlight
+    SIM->SCGC6 |= SIM_SCGC6_FTM0;
+    FTM0->CNT = 0; // Reset counter
+
+        // PWM Period
+        // 16-bit maximum
+        FTM0->MOD = 0xFFFF;
+
+        // Set FTM to PWM output - Edge Aligned, Low-true pulses
+#define CNSC_MODE FTM_SC_CPWMS | FTM_SC_PS(4) | FTM_SC_CLKS(0)
+        CHANNEL_RED.CnSC = CNSC_MODE;
+        CHANNEL_GREEN.CnSC = CNSC_MODE;
+        CHANNEL_BLUE.CnSC = CNSC_MODE;
+
+        // System clock, /w prescalar setting
+        FTM0->SC = FTM_SC_CLKS(1) | FTM_SC_PS(PRESCALAR_DEFINE);
+
+        CHANNEL_RED.CnV = 0;
+        CHANNEL_GREEN.CnV = 0;
+        CHANNEL_BLUE.CnV = 0;
+
+        RGB_PORT_GPIO->PDDR |= (1 << RED_PIN);
+        RGB_PORT_GPIO->PDDR |= (1 << GREEN_PIN);
+        RGB_PORT_GPIO->PDDR |= (1 << BLUE_PIN);
+
+#define RGB_MODE PORTx_PCRn_SRE | PORTx_PCRn_DSE | PORTx_PCRn_MUX(4)
+    RGB_PORT->PCR[RED_PIN] = RGB_MODE;
+    RGB_PORT->PCR[GREEN_PIN] = RGB_MODE;
+    RGB_PORT->PCR[BLUE_PIN] = RGB_MODE;
+}
+
+void lcd_backlight_hal_color(uint16_t r, uint16_t g, uint16_t b) {
+        CHANNEL_RED.CnV = r;
+        CHANNEL_GREEN.CnV = g;
+        CHANNEL_BLUE.CnV = b;
+}
+
diff --git a/quantum/visualizer/example_integration/visualizer_user.c b/quantum/visualizer/example_integration/visualizer_user.c
new file mode 100644
index 000000000..fc09fe2ea
--- /dev/null
+++ b/quantum/visualizer/example_integration/visualizer_user.c
@@ -0,0 +1,121 @@
+/*
+The MIT License (MIT)
+
+Copyright (c) 2016 Fred Sundvik
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+// Currently we are assuming that both the backlight and LCD are enabled
+// But it's entirely possible to write a custom visualizer that use only
+// one of them
+#ifndef LCD_BACKLIGHT_ENABLE
+#error This visualizer needs that LCD backlight is enabled
+#endif
+
+#ifndef LCD_ENABLE
+#error This visualizer needs that LCD is enabled
+#endif
+
+#include "visualizer.h"
+
+static const char* welcome_text[] = {"TMK", "Infinity Ergodox"};
+
+// Just an example how to write custom keyframe functions, we could have moved
+// all this into the init function
+bool display_welcome(keyframe_animation_t* animation, visualizer_state_t* state) {
+    (void)animation;
+    // Read the uGFX documentation for information how to use the displays
+    // http://wiki.ugfx.org/index.php/Main_Page
+    gdispClear(White);
+    // You can use static variables for things that can't be found in the animation
+    // or state structs
+    gdispDrawString(0, 3, welcome_text[0], state->font_dejavusansbold12, Black);
+    gdispDrawString(0, 15, welcome_text[1], state->font_dejavusansbold12, Black);
+    // Always remember to flush the display
+    gdispFlush();
+    // you could set the backlight color as well, but we won't do it here, since
+    // it's part of the following animation
+    // lcd_backlight_color(hue, saturation, intensity);
+    // We don't need constant updates, just drawing the screen once is enough
+    return false;
+}
+
+// Feel free to modify the animations below, or even add new ones if needed
+
+// Don't worry, if the startup animation is long, you can use the keyboard like normal
+// during that time
+static keyframe_animation_t startup_animation = {
+    .num_frames = 4,
+    .loop = false,
+    .frame_lengths = {0, MS2ST(1000), MS2ST(5000), 0},
+    .frame_functions = {display_welcome, keyframe_animate_backlight_color, keyframe_no_operation, enable_visualization},
+};
+
+// The color animation animates the LCD color when you change layers
+static keyframe_animation_t color_animation = {
+    .num_frames = 2,
+    .loop = false,
+    // Note that there's a 200 ms no-operation frame,
+    // this prevents the color from changing when activating the layer
+    // momentarily
+    .frame_lengths = {MS2ST(200), MS2ST(500)},
+    .frame_functions = {keyframe_no_operation, keyframe_animate_backlight_color},
+};
+
+// The LCD animation alternates between the layer name display and a
+// bitmap that displays all active layers
+static keyframe_animation_t lcd_animation = {
+    .num_frames = 2,
+    .loop = true,
+    .frame_lengths = {MS2ST(2000), MS2ST(2000)},
+    .frame_functions = {keyframe_display_layer_text, keyframe_display_layer_bitmap},
+};
+
+void initialize_user_visualizer(visualizer_state_t* state) {
+    // The brightness will be dynamically adjustable in the future
+    // But for now, change it here.
+    lcd_backlight_brightness(0x50);
+    state->current_lcd_color = LCD_COLOR(0x00, 0x00, 0xFF);
+    state->target_lcd_color = LCD_COLOR(0x10, 0xFF, 0xFF);
+    start_keyframe_animation(&startup_animation);
+}
+
+void update_user_visualizer_state(visualizer_state_t* state) {
+    // Add more tests, change the colors and layer texts here
+    // Usually you want to check the high bits (higher layers first)
+    // because that's the order layers are processed for keypresses
+    // You can for check for example:
+    // state->status.layer
+    // state->status.default_layer
+    // state->status.leds (see led.h for available statuses)
+    if (state->status.layer & 0x2) {
+        state->target_lcd_color = LCD_COLOR(0xA0, 0xB0, 0xFF);
+        state->layer_text = "Layer 2";
+    }
+    else {
+        state->target_lcd_color = LCD_COLOR(0x50, 0xB0, 0xFF);
+        state->layer_text = "Layer 1";
+    }
+    // You can also stop existing animations, and start your custom ones here
+    // remember that you should normally have only one animation for the LCD
+    // and one for the background. But you can also combine them if you want.
+    start_keyframe_animation(&lcd_animation);
+    start_keyframe_animation(&color_animation);
+}
diff --git a/quantum/visualizer/lcd_backlight.c b/quantum/visualizer/lcd_backlight.c
new file mode 100644
index 000000000..70187d1e0
--- /dev/null
+++ b/quantum/visualizer/lcd_backlight.c
@@ -0,0 +1,85 @@
+/*
+The MIT License (MIT)
+
+Copyright (c) 2016 Fred Sundvik
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#include "lcd_backlight.h"
+#include <math.h>
+
+static uint8_t current_hue = 0x00;
+static uint8_t current_saturation = 0x00;
+static uint8_t current_intensity = 0xFF;
+static uint8_t current_brightness = 0x7F;
+
+void lcd_backlight_init(void) {
+    lcd_backlight_hal_init();
+    lcd_backlight_color(current_hue, current_saturation, current_intensity);
+}
+
+// This code is based on Brian Neltner's blogpost and example code
+// "Why every LED light should be using HSI colorspace".
+// http://blog.saikoled.com/post/43693602826/why-every-led-light-should-be-using-hsi
+static void hsi_to_rgb(float h, float s, float i, uint16_t* r_out, uint16_t* g_out, uint16_t* b_out) {
+    unsigned int r, g, b;
+    h = fmodf(h, 360.0f); // cycle h around to 0-360 degrees
+    h = 3.14159f * h / 180.0f; // Convert to radians.
+    s = s > 0.0f ? (s < 1.0f ? s : 1.0f) : 0.0f; // clamp s and i to interval [0,1]
+    i = i > 0.0f ? (i < 1.0f ? i : 1.0f) : 0.0f;
+
+    // Math! Thanks in part to Kyle Miller.
+    if(h < 2.09439f) {
+        r = 65535.0f * i/3.0f *(1.0f + s * cos(h) / cosf(1.047196667f - h));
+        g = 65535.0f * i/3.0f *(1.0f + s *(1.0f - cosf(h) / cos(1.047196667f - h)));
+        b = 65535.0f * i/3.0f *(1.0f - s);
+    } else if(h < 4.188787) {
+        h = h - 2.09439;
+        g = 65535.0f * i/3.0f *(1.0f + s * cosf(h) / cosf(1.047196667f - h));
+        b = 65535.0f * i/3.0f *(1.0f + s * (1.0f - cosf(h) / cosf(1.047196667f - h)));
+        r = 65535.0f * i/3.0f *(1.0f - s);
+    } else {
+        h = h - 4.188787;
+        b = 65535.0f*i/3.0f * (1.0f + s * cosf(h) / cosf(1.047196667f - h));
+        r = 65535.0f*i/3.0f * (1.0f + s * (1.0f - cosf(h) / cosf(1.047196667f - h)));
+        g = 65535.0f*i/3.0f * (1.0f - s);
+    }
+    *r_out = r > 65535 ? 65535 : r;
+    *g_out = g > 65535 ? 65535 : g;
+    *b_out = b > 65535 ? 65535 : b;
+}
+
+void lcd_backlight_color(uint8_t hue, uint8_t saturation, uint8_t intensity) {
+    uint16_t r, g, b;
+    float hue_f = 360.0f * (float)hue / 255.0f;
+    float saturation_f = (float)saturation / 255.0f;
+    float intensity_f = (float)intensity / 255.0f;
+    intensity_f *= (float)current_brightness / 255.0f;
+    hsi_to_rgb(hue_f, saturation_f, intensity_f, &r, &g, &b);
+        current_hue = hue;
+        current_saturation = saturation;
+        current_intensity = intensity;
+        lcd_backlight_hal_color(r, g, b);
+}
+
+void lcd_backlight_brightness(uint8_t b) {
+    current_brightness = b;
+    lcd_backlight_color(current_hue, current_saturation, current_intensity);
+}
diff --git a/quantum/visualizer/lcd_backlight.h b/quantum/visualizer/lcd_backlight.h
new file mode 100644
index 000000000..dd3e37a06
--- /dev/null
+++ b/quantum/visualizer/lcd_backlight.h
@@ -0,0 +1,42 @@
+/*
+The MIT License (MIT)
+
+Copyright (c) 2016 Fred Sundvik
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#ifndef LCD_BACKLIGHT_H_
+#define LCD_BACKLIGHT_H_
+#include "stdint.h"
+
+// Helper macros for storing hue, staturation and intensity as unsigned integers
+#define LCD_COLOR(hue, saturation, intensity) (hue << 16 | saturation << 8 | intensity)
+#define LCD_HUE(color) ((color >> 16) & 0xFF)
+#define LCD_SAT(color) ((color >> 8) & 0xFF)
+#define LCD_INT(color) (color & 0xFF)
+
+void lcd_backlight_init(void);
+void lcd_backlight_color(uint8_t hue, uint8_t saturation, uint8_t intensity);
+void lcd_backlight_brightness(uint8_t b);
+
+void lcd_backlight_hal_init(void);
+void lcd_backlight_hal_color(uint16_t r, uint16_t g, uint16_t b);
+
+#endif /* LCD_BACKLIGHT_H_ */
diff --git a/quantum/visualizer/led_test.c b/quantum/visualizer/led_test.c
new file mode 100644
index 000000000..a9abace8d
--- /dev/null
+++ b/quantum/visualizer/led_test.c
@@ -0,0 +1,170 @@
+/*
+The MIT License (MIT)
+
+Copyright (c) 2016 Fred Sundvik
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+#include "led_test.h"
+#include "gfx.h"
+#include "math.h"
+
+#define CROSSFADE_TIME 1000
+#define GRADIENT_TIME 3000
+
+keyframe_animation_t led_test_animation = {
+    .num_frames = 14,
+    .loop = true,
+    .frame_lengths = {
+        gfxMillisecondsToTicks(1000), // fade in
+        gfxMillisecondsToTicks(1000), // no op (leds on)
+        gfxMillisecondsToTicks(1000), // fade out
+        gfxMillisecondsToTicks(CROSSFADE_TIME), // crossfade
+        gfxMillisecondsToTicks(GRADIENT_TIME), // left to rigt (outside in)
+        gfxMillisecondsToTicks(CROSSFADE_TIME), // crossfade
+        gfxMillisecondsToTicks(GRADIENT_TIME), // top_to_bottom
+        0,           // mirror leds
+        gfxMillisecondsToTicks(CROSSFADE_TIME), // crossfade
+        gfxMillisecondsToTicks(GRADIENT_TIME), // left_to_right (mirrored, so inside out)
+        gfxMillisecondsToTicks(CROSSFADE_TIME), // crossfade
+        gfxMillisecondsToTicks(GRADIENT_TIME), // top_to_bottom
+        0,           // normal leds
+        gfxMillisecondsToTicks(CROSSFADE_TIME), // crossfade
+
+    },
+    .frame_functions = {
+        keyframe_fade_in_all_leds,
+        keyframe_no_operation,
+        keyframe_fade_out_all_leds,
+        keyframe_led_crossfade,
+        keyframe_led_left_to_right_gradient,
+        keyframe_led_crossfade,
+        keyframe_led_top_to_bottom_gradient,
+        keyframe_mirror_led_orientation,
+        keyframe_led_crossfade,
+        keyframe_led_left_to_right_gradient,
+        keyframe_led_crossfade,
+        keyframe_led_top_to_bottom_gradient,
+        keyframe_normal_led_orientation,
+        keyframe_led_crossfade,
+    },
+};
+
+static uint8_t fade_led_color(keyframe_animation_t* animation, int from, int to) {
+    int frame_length = animation->frame_lengths[animation->current_frame];
+    int current_pos = frame_length - animation->time_left_in_frame;
+    int delta = to - from;
+    int luma = (delta * current_pos) / frame_length;
+    luma += from;
+    return luma;
+}
+
+static void keyframe_fade_all_leds_from_to(keyframe_animation_t* animation, uint8_t from, uint8_t to) {
+    uint8_t luma = fade_led_color(animation, from, to);
+    color_t color = LUMA2COLOR(luma);
+    gdispGClear(LED_DISPLAY, color);
+}
+
+// TODO: Should be customizable per keyboard
+#define NUM_ROWS 7
+#define NUM_COLS 7
+
+static uint8_t crossfade_start_frame[NUM_ROWS][NUM_COLS];
+static uint8_t crossfade_end_frame[NUM_ROWS][NUM_COLS];
+
+static uint8_t compute_gradient_color(float t, float index, float num) {
+    const float two_pi = M_2_PI;
+    float normalized_index = (1.0f - index / (num - 1.0f)) * two_pi;
+    float x = t * two_pi + normalized_index;
+    float v = 0.5 * (cosf(x) + 1.0f);
+    return (uint8_t)(255.0f * v);
+}
+
+bool keyframe_fade_in_all_leds(keyframe_animation_t* animation, visualizer_state_t* state) {
+    (void)state;
+    keyframe_fade_all_leds_from_to(animation, 0, 255);
+    return true;
+}
+
+bool keyframe_fade_out_all_leds(keyframe_animation_t* animation, visualizer_state_t* state) {
+    (void)state;
+    keyframe_fade_all_leds_from_to(animation, 255, 0);
+    return true;
+}
+
+bool keyframe_led_left_to_right_gradient(keyframe_animation_t* animation, visualizer_state_t* state) {
+    (void)state;
+    float frame_length = animation->frame_lengths[animation->current_frame];
+    float current_pos = frame_length - animation->time_left_in_frame;
+    float t = current_pos / frame_length;
+    for (int i=0; i< NUM_COLS; i++) {
+        uint8_t color = compute_gradient_color(t, i, NUM_COLS);
+        gdispGDrawLine(LED_DISPLAY, i, 0, i, NUM_ROWS - 1, LUMA2COLOR(color));
+    }
+    return true;
+}
+
+bool keyframe_led_top_to_bottom_gradient(keyframe_animation_t* animation, visualizer_state_t* state) {
+    (void)state;
+    float frame_length = animation->frame_lengths[animation->current_frame];
+    float current_pos = frame_length - animation->time_left_in_frame;
+    float t = current_pos / frame_length;
+    for (int i=0; i< NUM_ROWS; i++) {
+        uint8_t color = compute_gradient_color(t, i, NUM_ROWS);
+        gdispGDrawLine(LED_DISPLAY, 0, i, NUM_COLS - 1, i, LUMA2COLOR(color));
+    }
+    return true;
+}
+
+static void copy_current_led_state(uint8_t* dest) {
+    for (int i=0;i<NUM_ROWS;i++) {
+        for (int j=0;j<NUM_COLS;j++) {
+            dest[i*NUM_COLS + j] = gdispGGetPixelColor(LED_DISPLAY, j, i);
+        }
+    }
+}
+bool keyframe_led_crossfade(keyframe_animation_t* animation, visualizer_state_t* state) {
+    (void)state;
+    if (animation->first_update_of_frame) {
+        copy_current_led_state(&crossfade_start_frame[0][0]);
+        run_next_keyframe(animation, state);
+        copy_current_led_state(&crossfade_end_frame[0][0]);
+    }
+    for (int i=0;i<NUM_ROWS;i++) {
+        for (int j=0;j<NUM_COLS;j++) {
+            color_t color  = LUMA2COLOR(fade_led_color(animation, crossfade_start_frame[i][j], crossfade_end_frame[i][j]));
+            gdispGDrawPixel(LED_DISPLAY, j, i, color);
+        }
+    }
+    return true;
+}
+
+bool keyframe_mirror_led_orientation(keyframe_animation_t* animation, visualizer_state_t* state) {
+    (void)state;
+    (void)animation;
+    gdispGSetOrientation(LED_DISPLAY, GDISP_ROTATE_180);
+    return false;
+}
+
+bool keyframe_normal_led_orientation(keyframe_animation_t* animation, visualizer_state_t* state) {
+    (void)state;
+    (void)animation;
+    gdispGSetOrientation(LED_DISPLAY, GDISP_ROTATE_0);
+    return false;
+}
diff --git a/quantum/visualizer/led_test.h b/quantum/visualizer/led_test.h
new file mode 100644
index 000000000..5e2325753
--- /dev/null
+++ b/quantum/visualizer/led_test.h
@@ -0,0 +1,41 @@
+/*
+The MIT License (MIT)
+
+Copyright (c) 2016 Fred Sundvik
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#ifndef TMK_VISUALIZER_LED_TEST_H_
+#define TMK_VISUALIZER_LED_TEST_H_
+
+#include "visualizer.h"
+
+bool keyframe_fade_in_all_leds(keyframe_animation_t* animation, visualizer_state_t* state);
+bool keyframe_fade_out_all_leds(keyframe_animation_t* animation, visualizer_state_t* state);
+bool keyframe_led_left_to_right_gradient(keyframe_animation_t* animation, visualizer_state_t* state);
+bool keyframe_led_top_to_bottom_gradient(keyframe_animation_t* animation, visualizer_state_t* state);
+bool keyframe_led_crossfade(keyframe_animation_t* animation, visualizer_state_t* state);
+bool keyframe_mirror_led_orientation(keyframe_animation_t* animation, visualizer_state_t* state);
+bool keyframe_normal_led_orientation(keyframe_animation_t* animation, visualizer_state_t* state);
+
+extern keyframe_animation_t led_test_animation;
+
+
+#endif /* TMK_VISUALIZER_LED_TEST_H_ */
diff --git a/quantum/visualizer/readme.md b/quantum/visualizer/readme.md
new file mode 100644
index 000000000..545ba2270
--- /dev/null
+++ b/quantum/visualizer/readme.md
@@ -0,0 +1,18 @@
+# A visualization library for the TMK keyboard firmware
+
+This library is designed to work together with the [TMK keyboard firmware](https://github.com/tmk/tmk_keyboard). Currently it only works for [Chibios](http://www.chibios.org/)
+ flavors, but it would be possible to add support for other configurations as well. The LCD display functionality is provided by the [uGFX library](http://www.ugfx.org/). 
+
+## To use this library as a user
+You can and should modify the visualizer\_user.c file. Check the comments in the file for more information.
+
+## To add this library to custom keyboard projects
+
+1. Add tmk_visualizer as a submodule to your project
+1. Set VISUALIZER_DIR in the main keyboard project makefile to point to the submodule
+1. Define LCD\_ENABLE and/or LCD\_BACKLIGHT\_ENABLE, to enable support
+1. Include the visualizer.mk make file
+1. Copy the files in the example\_integration folder to your keyboard project
+1. All other files than the callback.c file are included automatically, so you will need to add callback.c to your makefile manually. If you already have a similar file in your project, you can just copy the functions instead of the whole file.
+1. Edit the files to match your hardware. You might might want to read the Chibios and UGfx documentation, for more information.
+1. If you enable LCD support you might also have to write a custom uGFX display driver, check the uGFX documentation for that. You probably also want to enable SPI support in your Chibios configuration.
diff --git a/quantum/visualizer/visualizer.c b/quantum/visualizer/visualizer.c
new file mode 100644
index 000000000..54f6faaa4
--- /dev/null
+++ b/quantum/visualizer/visualizer.c
@@ -0,0 +1,545 @@
+/*
+The MIT License (MIT)
+
+Copyright (c) 2016 Fred Sundvik
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#include "visualizer.h"
+#include "config.h"
+#include <string.h>
+#ifdef PROTOCOL_CHIBIOS
+#include "ch.h"
+#endif
+
+#include "gfx.h"
+
+#ifdef LCD_BACKLIGHT_ENABLE
+#include "lcd_backlight.h"
+#endif
+
+//#define DEBUG_VISUALIZER
+
+#ifdef DEBUG_VISUALIZER
+#include "debug.h"
+#else
+#include "nodebug.h"
+#endif
+
+#ifdef SERIAL_LINK_ENABLE
+#include "serial_link/protocol/transport.h"
+#include "serial_link/system/serial_link.h"
+#endif
+
+// Define this in config.h
+#ifndef VISUALIZER_THREAD_PRIORITY
+#define "Visualizer thread priority not defined"
+#endif
+
+
+static visualizer_keyboard_status_t current_status = {
+    .layer = 0xFFFFFFFF,
+    .default_layer = 0xFFFFFFFF,
+    .leds = 0xFFFFFFFF,
+    .suspended = false,
+};
+
+static bool same_status(visualizer_keyboard_status_t* status1, visualizer_keyboard_status_t* status2) {
+    return status1->layer == status2->layer &&
+        status1->default_layer == status2->default_layer &&
+        status1->leds == status2->leds &&
+        status1->suspended == status2->suspended;
+}
+
+static bool visualizer_enabled = false;
+
+#define MAX_SIMULTANEOUS_ANIMATIONS 4
+static keyframe_animation_t* animations[MAX_SIMULTANEOUS_ANIMATIONS] = {};
+
+#ifdef SERIAL_LINK_ENABLE
+MASTER_TO_ALL_SLAVES_OBJECT(current_status, visualizer_keyboard_status_t);
+
+static remote_object_t* remote_objects[] = {
+    REMOTE_OBJECT(current_status),
+};
+
+#endif
+
+GDisplay* LCD_DISPLAY = 0;
+GDisplay* LED_DISPLAY = 0;
+
+__attribute__((weak))
+GDisplay* get_lcd_display(void) {
+    return gdispGetDisplay(0);
+}
+
+__attribute__((weak))
+GDisplay* get_led_display(void) {
+    return gdispGetDisplay(1);
+}
+
+void start_keyframe_animation(keyframe_animation_t* animation) {
+    animation->current_frame = -1;
+    animation->time_left_in_frame = 0;
+    animation->need_update = true;
+    int free_index = -1;
+    for (int i=0;i<MAX_SIMULTANEOUS_ANIMATIONS;i++) {
+        if (animations[i] == animation) {
+            return;
+        }
+        if (free_index == -1 && animations[i] == NULL) {
+           free_index=i;
+        }
+    }
+    if (free_index!=-1) {
+        animations[free_index] = animation;
+    }
+}
+
+void stop_keyframe_animation(keyframe_animation_t* animation) {
+    animation->current_frame = animation->num_frames;
+    animation->time_left_in_frame = 0;
+    animation->need_update = true;
+    animation->first_update_of_frame = false;
+    animation->last_update_of_frame = false;
+    for (int i=0;i<MAX_SIMULTANEOUS_ANIMATIONS;i++) {
+        if (animations[i] == animation) {
+            animations[i] = NULL;
+            return;
+        }
+    }
+}
+
+void stop_all_keyframe_animations(void) {
+    for (int i=0;i<MAX_SIMULTANEOUS_ANIMATIONS;i++) {
+        if (animations[i]) {
+            animations[i]->current_frame = animations[i]->num_frames;
+            animations[i]->time_left_in_frame = 0;
+            animations[i]->need_update = true;
+            animations[i]->first_update_of_frame = false;
+            animations[i]->last_update_of_frame = false;
+            animations[i] = NULL;
+        }
+    }
+}
+
+static bool update_keyframe_animation(keyframe_animation_t* animation, visualizer_state_t* state, systemticks_t delta, systemticks_t* sleep_time) {
+    // TODO: Clean up this messy code
+    dprintf("Animation frame%d, left %d, delta %d\n", animation->current_frame,
+            animation->time_left_in_frame, delta);
+    if (animation->current_frame == animation->num_frames) {
+        animation->need_update = false;
+        return false;
+    }
+    if (animation->current_frame == -1) {
+       animation->current_frame = 0;
+       animation->time_left_in_frame = animation->frame_lengths[0];
+       animation->need_update = true;
+       animation->first_update_of_frame = true;
+    } else {
+        animation->time_left_in_frame -= delta;
+        while (animation->time_left_in_frame <= 0) {
+            int left = animation->time_left_in_frame;
+            if (animation->need_update) {
+                animation->time_left_in_frame = 0;
+                animation->last_update_of_frame = true;
+                (*animation->frame_functions[animation->current_frame])(animation, state);
+                animation->last_update_of_frame = false;
+            }
+            animation->current_frame++;
+            animation->need_update = true;
+            animation->first_update_of_frame = true;
+            if (animation->current_frame == animation->num_frames) {
+                if (animation->loop) {
+                    animation->current_frame = 0;
+                }
+                else {
+                    stop_keyframe_animation(animation);
+                    return false;
+                }
+            }
+            delta = -left;
+            animation->time_left_in_frame = animation->frame_lengths[animation->current_frame];
+            animation->time_left_in_frame -= delta;
+        }
+    }
+    if (animation->need_update) {
+        animation->need_update = (*animation->frame_functions[animation->current_frame])(animation, state);
+        animation->first_update_of_frame = false;
+    }
+
+    systemticks_t wanted_sleep = animation->need_update ? gfxMillisecondsToTicks(10) : (unsigned)animation->time_left_in_frame;
+    if (wanted_sleep < *sleep_time) {
+        *sleep_time = wanted_sleep;
+    }
+
+    return true;
+}
+
+void run_next_keyframe(keyframe_animation_t* animation, visualizer_state_t* state) {
+    int next_frame = animation->current_frame + 1;
+    if (next_frame == animation->num_frames) {
+        next_frame = 0;
+    }
+    keyframe_animation_t temp_animation = *animation;
+    temp_animation.current_frame = next_frame;
+    temp_animation.time_left_in_frame = animation->frame_lengths[next_frame];
+    temp_animation.first_update_of_frame = true;
+    temp_animation.last_update_of_frame = false;
+    temp_animation.need_update  = false;
+    visualizer_state_t temp_state = *state;
+    (*temp_animation.frame_functions[next_frame])(&temp_animation, &temp_state);
+}
+
+bool keyframe_no_operation(keyframe_animation_t* animation, visualizer_state_t* state) {
+    (void)animation;
+    (void)state;
+    return false;
+}
+
+#ifdef LCD_BACKLIGHT_ENABLE
+bool keyframe_animate_backlight_color(keyframe_animation_t* animation, visualizer_state_t* state) {
+    int frame_length = animation->frame_lengths[animation->current_frame];
+    int current_pos = frame_length - animation->time_left_in_frame;
+    uint8_t t_h = LCD_HUE(state->target_lcd_color);
+    uint8_t t_s = LCD_SAT(state->target_lcd_color);
+    uint8_t t_i = LCD_INT(state->target_lcd_color);
+    uint8_t p_h = LCD_HUE(state->prev_lcd_color);
+    uint8_t p_s = LCD_SAT(state->prev_lcd_color);
+    uint8_t p_i = LCD_INT(state->prev_lcd_color);
+
+    uint8_t d_h1 = t_h - p_h; //Modulo arithmetic since we want to wrap around
+    int d_h2 = t_h - p_h;
+    // Chose the shortest way around
+    int d_h = abs(d_h2) < d_h1 ? d_h2 : d_h1;
+    int d_s = t_s - p_s;
+    int d_i = t_i - p_i;
+
+    int hue = (d_h * current_pos) / frame_length;
+    int sat = (d_s * current_pos) / frame_length;
+    int intensity = (d_i * current_pos) / frame_length;
+    //dprintf("%X -> %X = %X\n", p_h, t_h, hue);
+    hue += p_h;
+    sat += p_s;
+    intensity += p_i;
+    state->current_lcd_color = LCD_COLOR(hue, sat, intensity);
+    lcd_backlight_color(
+            LCD_HUE(state->current_lcd_color),
+            LCD_SAT(state->current_lcd_color),
+            LCD_INT(state->current_lcd_color));
+
+    return true;
+}
+
+bool keyframe_set_backlight_color(keyframe_animation_t* animation, visualizer_state_t* state) {
+    (void)animation;
+    state->prev_lcd_color = state->target_lcd_color;
+    state->current_lcd_color = state->target_lcd_color;
+    lcd_backlight_color(
+            LCD_HUE(state->current_lcd_color),
+            LCD_SAT(state->current_lcd_color),
+            LCD_INT(state->current_lcd_color));
+    return false;
+}
+#endif // LCD_BACKLIGHT_ENABLE
+
+#ifdef LCD_ENABLE
+bool keyframe_display_layer_text(keyframe_animation_t* animation, visualizer_state_t* state) {
+    (void)animation;
+    gdispClear(White);
+    gdispDrawString(0, 10, state->layer_text, state->font_dejavusansbold12, Black);
+    gdispFlush();
+    return false;
+}
+
+static void format_layer_bitmap_string(uint16_t default_layer, uint16_t layer, char* buffer) {
+    for (int i=0; i<16;i++)
+    {
+        uint32_t mask = (1u << i);
+        if (default_layer & mask) {
+            if (layer & mask) {
+                *buffer = 'B';
+            } else {
+                *buffer = 'D';
+            }
+        } else if (layer & mask) {
+            *buffer = '1';
+        } else {
+            *buffer = '0';
+        }
+        ++buffer;
+
+        if (i==3 || i==7 || i==11) {
+            *buffer = ' ';
+            ++buffer;
+        }
+    }
+    *buffer = 0;
+}
+
+bool keyframe_display_layer_bitmap(keyframe_animation_t* animation, visualizer_state_t* state) {
+    (void)animation;
+    const char* layer_help = "1=On D=Default B=Both";
+    char layer_buffer[16 + 4]; // 3 spaces and one null terminator
+    gdispClear(White);
+    gdispDrawString(0, 0, layer_help, state->font_fixed5x8, Black);
+    format_layer_bitmap_string(state->status.default_layer, state->status.layer, layer_buffer);
+    gdispDrawString(0, 10, layer_buffer, state->font_fixed5x8, Black);
+    format_layer_bitmap_string(state->status.default_layer >> 16, state->status.layer >> 16, layer_buffer);
+    gdispDrawString(0, 20, layer_buffer, state->font_fixed5x8, Black);
+    gdispFlush();
+    return false;
+}
+#endif // LCD_ENABLE
+
+bool keyframe_disable_lcd_and_backlight(keyframe_animation_t* animation, visualizer_state_t* state) {
+    (void)animation;
+    (void)state;
+#ifdef LCD_ENABLE
+    gdispSetPowerMode(powerOff);
+#endif
+#ifdef LCD_BACKLIGHT_ENABLE
+    lcd_backlight_hal_color(0, 0, 0);
+#endif
+    return false;
+}
+
+bool keyframe_enable_lcd_and_backlight(keyframe_animation_t* animation, visualizer_state_t* state) {
+    (void)animation;
+    (void)state;
+#ifdef LCD_ENABLE
+    gdispSetPowerMode(powerOn);
+#endif
+    return false;
+}
+
+bool enable_visualization(keyframe_animation_t* animation, visualizer_state_t* state) {
+    (void)animation;
+    (void)state;
+    dprint("User visualizer inited\n");
+    visualizer_enabled = true;
+    return false;
+}
+
+// TODO: Optimize the stack size, this is probably way too big
+static DECLARE_THREAD_STACK(visualizerThreadStack, 1024);
+static DECLARE_THREAD_FUNCTION(visualizerThread, arg) {
+    (void)arg;
+
+    GListener event_listener;
+    geventListenerInit(&event_listener);
+    geventAttachSource(&event_listener, (GSourceHandle)&current_status, 0);
+
+    visualizer_keyboard_status_t initial_status = {
+        .default_layer = 0xFFFFFFFF,
+        .layer = 0xFFFFFFFF,
+        .leds = 0xFFFFFFFF,
+        .suspended = false,
+    };
+
+    visualizer_state_t state = {
+        .status = initial_status,
+        .current_lcd_color = 0,
+#ifdef LCD_ENABLE
+        .font_fixed5x8 = gdispOpenFont("fixed_5x8"),
+        .font_dejavusansbold12 = gdispOpenFont("DejaVuSansBold12")
+#endif
+    };
+    initialize_user_visualizer(&state);
+    state.prev_lcd_color = state.current_lcd_color;
+
+#ifdef LCD_BACKLIGHT_ENABLE
+    lcd_backlight_color(
+            LCD_HUE(state.current_lcd_color),
+            LCD_SAT(state.current_lcd_color),
+            LCD_INT(state.current_lcd_color));
+#endif
+
+    systemticks_t sleep_time = TIME_INFINITE;
+    systemticks_t current_time = gfxSystemTicks();
+
+    while(true) {
+        systemticks_t new_time = gfxSystemTicks();
+        systemticks_t delta = new_time - current_time;
+        current_time = new_time;
+        bool enabled = visualizer_enabled;
+        if (!same_status(&state.status, &current_status)) {
+            if (visualizer_enabled) {
+                if (current_status.suspended) {
+                    stop_all_keyframe_animations();
+                    visualizer_enabled = false;
+                    state.status = current_status;
+                    user_visualizer_suspend(&state);
+                }
+                else {
+                    state.status = current_status;
+                    update_user_visualizer_state(&state);
+                }
+                state.prev_lcd_color = state.current_lcd_color;
+            }
+        }
+        if (!enabled && state.status.suspended && current_status.suspended == false) {
+            // Setting the status to the initial status will force an update
+            // when the visualizer is enabled again
+            state.status = initial_status;
+            state.status.suspended = false;
+            stop_all_keyframe_animations();
+            user_visualizer_resume(&state);
+            state.prev_lcd_color = state.current_lcd_color;
+        }
+        sleep_time = TIME_INFINITE;
+        for (int i=0;i<MAX_SIMULTANEOUS_ANIMATIONS;i++) {
+            if (animations[i]) {
+                update_keyframe_animation(animations[i], &state, delta, &sleep_time);
+            }
+        }
+#ifdef LED_ENABLE
+        gdispGFlush(LED_DISPLAY);
+#endif
+
+#ifdef EMULATOR
+        draw_emulator();
+#endif
+        // The animation can enable the visualizer
+        // And we might need to update the state when that happens
+        // so don't sleep
+        if (enabled != visualizer_enabled) {
+            sleep_time = 0;
+        }
+
+        systemticks_t after_update = gfxSystemTicks();
+        unsigned update_delta = after_update - current_time;
+        if (sleep_time != TIME_INFINITE) {
+            if (sleep_time > update_delta) {
+                sleep_time -= update_delta;
+            }
+            else {
+                sleep_time = 0;
+            }
+        }
+        dprintf("Update took %d, last delta %d, sleep_time %d\n", update_delta, delta, sleep_time);
+#ifdef PROTOCOL_CHIBIOS
+        // The gEventWait function really takes milliseconds, even if the documentation says ticks.
+        // Unfortunately there's no generic ugfx conversion from system time to milliseconds,
+        // so let's do it in a platform dependent way.
+
+        // On windows the system ticks is the same as milliseconds anyway
+        if (sleep_time != TIME_INFINITE) {
+            sleep_time = ST2MS(sleep_time);
+        }
+#endif
+        geventEventWait(&event_listener, sleep_time);
+    }
+#ifdef LCD_ENABLE
+    gdispCloseFont(state.font_fixed5x8);
+    gdispCloseFont(state.font_dejavusansbold12);
+#endif
+
+    return 0;
+}
+
+void visualizer_init(void) {
+    gfxInit();
+
+#ifdef LCD_BACKLIGHT_ENABLE
+    lcd_backlight_init();
+#endif
+
+#ifdef SERIAL_LINK_ENABLE
+    add_remote_objects(remote_objects, sizeof(remote_objects) / sizeof(remote_object_t*) );
+#endif
+
+#ifdef LCD_ENABLE
+    LCD_DISPLAY = get_lcd_display();
+#endif
+#ifdef LED_ENABLE
+    LED_DISPLAY = get_led_display();
+#endif
+
+    // We are using a low priority thread, the idea is to have it run only
+    // when the main thread is sleeping during the matrix scanning
+    gfxThreadCreate(visualizerThreadStack, sizeof(visualizerThreadStack),
+                              VISUALIZER_THREAD_PRIORITY, visualizerThread, NULL);
+}
+
+void update_status(bool changed) {
+    if (changed) {
+        GSourceListener* listener = geventGetSourceListener((GSourceHandle)&current_status, NULL);
+        if (listener) {
+            geventSendEvent(listener);
+        }
+    }
+#ifdef SERIAL_LINK_ENABLE
+    static systime_t last_update = 0;
+    systime_t current_update = chVTGetSystemTimeX();
+    systime_t delta = current_update - last_update;
+    if (changed || delta > MS2ST(10)) {
+        last_update = current_update;
+        visualizer_keyboard_status_t* r = begin_write_current_status();
+        *r = current_status;
+        end_write_current_status();
+    }
+#endif
+}
+
+void visualizer_update(uint32_t default_state, uint32_t state, uint32_t leds) {
+    // Note that there's a small race condition here, the thread could read
+    // a state where one of these are set but not the other. But this should
+    // not really matter as it will be fixed during the next loop step.
+    // Alternatively a mutex could be used instead of the volatile variables
+
+    bool changed = false;
+#ifdef SERIAL_LINK_ENABLE
+    if (is_serial_link_connected ()) {
+        visualizer_keyboard_status_t* new_status = read_current_status();
+        if (new_status) {
+            if (!same_status(&current_status, new_status)) {
+                changed = true;
+                current_status = *new_status;
+            }
+        }
+    }
+    else {
+#else
+   {
+#endif
+        visualizer_keyboard_status_t new_status = {
+            .layer = state,
+            .default_layer = default_state,
+            .leds = leds,
+            .suspended = current_status.suspended,
+        };
+        if (!same_status(&current_status, &new_status)) {
+            changed = true;
+            current_status = new_status;
+        }
+    }
+    update_status(changed);
+}
+
+void visualizer_suspend(void) {
+    current_status.suspended = true;
+    update_status(true);
+}
+
+void visualizer_resume(void) {
+    current_status.suspended = false;
+    update_status(true);
+}
diff --git a/quantum/visualizer/visualizer.h b/quantum/visualizer/visualizer.h
new file mode 100644
index 000000000..53e250725
--- /dev/null
+++ b/quantum/visualizer/visualizer.h
@@ -0,0 +1,147 @@
+/*
+The MIT License (MIT)
+
+Copyright (c) 2016 Fred Sundvik
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#ifndef VISUALIZER_H
+#define VISUALIZER_H
+#include <stdlib.h>
+#include <stdint.h>
+#include <stdbool.h>
+
+#include "gfx.h"
+
+#ifdef LCD_BACKLIGHT_ENABLE
+#include "lcd_backlight.h"
+#endif
+
+// This need to be called once at the start
+void visualizer_init(void);
+// This should be called at every matrix scan
+void visualizer_update(uint32_t default_state, uint32_t state, uint32_t leds);
+// This should be called when the keyboard goes to suspend state
+void visualizer_suspend(void);
+// This should be called when the keyboard wakes up from suspend state
+void visualizer_resume(void);
+
+// These functions are week, so they can be overridden by the keyboard
+// if needed
+GDisplay* get_lcd_display(void);
+GDisplay* get_led_display(void);
+
+// For emulator builds, this function need to be implemented
+#ifdef EMULATOR
+void draw_emulator(void);
+#endif
+
+// If you need support for more than 16 keyframes per animation, you can change this
+#define MAX_VISUALIZER_KEY_FRAMES 16
+
+struct keyframe_animation_t;
+
+typedef struct {
+    uint32_t layer;
+    uint32_t default_layer;
+    uint32_t leds; // See led.h for available statuses
+    bool suspended;
+} visualizer_keyboard_status_t;
+
+// The state struct is used by the various keyframe functions
+// It's also used for setting the LCD color and layer text
+// from the user customized code
+typedef struct visualizer_state_t {
+    // The user code should primarily be modifying these
+    uint32_t target_lcd_color;
+    const char* layer_text;
+
+    // The user visualizer(and animation functions) can read these
+    visualizer_keyboard_status_t status;
+
+    // These are used by the animation functions
+    uint32_t current_lcd_color;
+    uint32_t prev_lcd_color;
+#ifdef LCD_ENABLE
+    font_t font_fixed5x8;
+    font_t font_dejavusansbold12;
+#endif
+} visualizer_state_t;
+
+// Any custom keyframe function should have this signature
+// return true to get continuous updates, otherwise you will only get one
+// update per frame
+typedef bool (*frame_func)(struct keyframe_animation_t*, visualizer_state_t*);
+
+// Represents a keyframe animation, so fields are internal to the system
+// while others are meant to be initialized by the user code
+typedef struct keyframe_animation_t {
+    // These should be initialized
+    int num_frames;
+    bool loop;
+    int frame_lengths[MAX_VISUALIZER_KEY_FRAMES];
+    frame_func frame_functions[MAX_VISUALIZER_KEY_FRAMES];
+
+    // Used internally by the system, and can also be read by
+    // keyframe update functions
+    int current_frame;
+    int time_left_in_frame;
+    bool first_update_of_frame;
+    bool last_update_of_frame;
+    bool need_update;
+
+} keyframe_animation_t;
+
+extern GDisplay* LCD_DISPLAY;
+extern GDisplay* LED_DISPLAY;
+
+void start_keyframe_animation(keyframe_animation_t* animation);
+void stop_keyframe_animation(keyframe_animation_t* animation);
+// This runs the next keyframe, but does not update the animation state
+// Useful for crossfades for example
+void run_next_keyframe(keyframe_animation_t* animation, visualizer_state_t* state);
+
+// Some predefined keyframe functions that can be used by the user code
+// Does nothing, useful for adding delays
+bool keyframe_no_operation(keyframe_animation_t* animation, visualizer_state_t* state);
+// Animates the LCD backlight color between the current color and the target color (of the state)
+bool keyframe_animate_backlight_color(keyframe_animation_t* animation, visualizer_state_t* state);
+// Sets the backlight color to the target color
+bool keyframe_set_backlight_color(keyframe_animation_t* animation, visualizer_state_t* state);
+// Displays the layer text centered vertically on the screen
+bool keyframe_display_layer_text(keyframe_animation_t* animation, visualizer_state_t* state);
+// Displays a bitmap (0/1) of all the currently active layers
+bool keyframe_display_layer_bitmap(keyframe_animation_t* animation, visualizer_state_t* state);
+
+bool keyframe_disable_lcd_and_backlight(keyframe_animation_t* animation, visualizer_state_t* state);
+bool keyframe_enable_lcd_and_backlight(keyframe_animation_t* animation, visualizer_state_t* state);
+
+// Call this once, when the initial animation has finished, alternatively you can call it
+// directly from the initalize_user_visualizer function (the animation can be null)
+bool enable_visualization(keyframe_animation_t* animation, visualizer_state_t* state);
+
+// These functions have to be implemented by the user
+void initialize_user_visualizer(visualizer_state_t* state);
+void update_user_visualizer_state(visualizer_state_t* state);
+void user_visualizer_suspend(visualizer_state_t* state);
+void user_visualizer_resume(visualizer_state_t* state);
+
+
+#endif /* VISUALIZER_H */
diff --git a/quantum/visualizer/visualizer.mk b/quantum/visualizer/visualizer.mk
new file mode 100644
index 000000000..2f4a41d66
--- /dev/null
+++ b/quantum/visualizer/visualizer.mk
@@ -0,0 +1,61 @@
+# The MIT License (MIT)
+# 
+# Copyright (c) 2016 Fred Sundvik
+# 
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+# 
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+SRC += $(VISUALIZER_DIR)/visualizer.c
+EXTRAINCDIRS += $(GFXINC) $(VISUALIZER_DIR)
+GFXLIB = $(LIB_PATH)/ugfx
+VPATH += $(VISUALIZER_PATH)
+
+OPT_DEFS += -DVISUALIZER_ENABLE
+
+ifdef LCD_ENABLE
+OPT_DEFS += -DLCD_ENABLE
+ULIBS += -lm
+endif
+
+ifdef LCD_BACKLIGHT_ENABLE
+SRC += $(VISUALIZER_DIR)/lcd_backlight.c
+OPT_DEFS += -DLCD_BACKLIGHT_ENABLE
+endif
+
+ifdef LED_ENABLE
+SRC += $(VISUALIZER_DIR)/led_test.c
+OPT_DEFS += -DLED_ENABLE
+endif
+
+include $(GFXLIB)/gfx.mk
+SRC += $(patsubst $(TOP_DIR)/%,%,$(GFXSRC))
+OPT_DEFS += $(patsubst %,-D%,$(patsubst -D%,%,$(GFXDEFS)))
+
+ifneq ("$(wildcard $(KEYMAP_PATH)/visualizer.c)","")
+        SRC += keyboards/$(KEYBOARD)/keymaps/$(KEYMAP)/visualizer.c
+else 
+        ifeq ("$(wildcard $(SUBPROJECT_PATH)/keymaps/$(KEYMAP)/visualizer.c)","")
+$(error "$(KEYMAP_PATH)/visualizer.c" does not exist)
+        else
+                SRC += keyboards/$(KEYBOARD)/$(SUBPROJECT)/keymaps/$(KEYMAP)/visualizer.c
+        endif
+endif
+
+ifdef EMULATOR
+UINCDIR += $(TMK_DIR)/common
+endif
\ No newline at end of file