Merge pull request #19 from qmk/master

Merge from qmk 

11 files changed, 1180 insertions, 0 deletions

diff --git a/keyboards/lets_split/keymaps/OLED_sample/Makefile b/keyboards/lets_split/keymaps/OLED_sample/Makefile
new file mode 100644
index 0000000000..90616d1f19
--- /dev/null
+++ b/keyboards/lets_split/keymaps/OLED_sample/Makefile
@@ -0,0 +1,25 @@
+
+# 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 = no        # 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 = yes        # Enable WS2812 RGB underlight.  Do not enable this with audio at the same time.
+ONEHAND_ENABLE = no        # Enable one-hand typing
+
+# Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
+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/keyboards/lets_split/keymaps/OLED_sample/config.h b/keyboards/lets_split/keymaps/OLED_sample/config.h
new file mode 100644
index 0000000000..353ea368c6
--- /dev/null
+++ b/keyboards/lets_split/keymaps/OLED_sample/config.h
@@ -0,0 +1,45 @@
+/*
+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/>.
+*/
+
+#define USE_I2C
+//#define USE_SERIAL
+//#define MASTER_RIGHT
+#define FLIP_HALF
+
+#define SSD1306OLED
+
+
+#define PREVENT_STUCK_MODIFIERS
+#define TAPPING_FORCE_HOLD
+#define TAPPING_TERM 100
+
+#undef RGBLED_NUM
+#define RGBLIGHT_ANIMATIONS
+#define RGBLED_NUM 6
+#define RGBLIGHT_HUE_STEP 10
+#define RGBLIGHT_SAT_STEP 17
+#define RGBLIGHT_VAL_STEP 17
+
+
+
+
+#ifdef SUBPROJECT_rev1
+    #include "../../rev1/config.h"
+#endif
+#ifdef SUBPROJECT_rev2
+    #include "../../rev2/config.h"
+#endif
\ No newline at end of file
diff --git a/keyboards/lets_split/keymaps/OLED_sample/keymap.c b/keyboards/lets_split/keymaps/OLED_sample/keymap.c
new file mode 100644
index 0000000000..072b825abe
--- /dev/null
+++ b/keyboards/lets_split/keymaps/OLED_sample/keymap.c
@@ -0,0 +1,356 @@
+#include "lets_split.h"
+#include "bootloader.h"
+#include "action_layer.h"
+#include "eeconfig.h"
+#include "tmk_core/protocol/lufa/LUFA-git/LUFA/Drivers/Peripheral/TWI.h"
+#ifdef AUDIO_ENABLE
+  #include "audio.h"
+#endif
+
+extern keymap_config_t keymap_config;
+
+//Following line allows macro to read current RGB settings
+extern rgblight_config_t rgblight_config;
+
+
+// Each layer gets a name for readability, which is then used in the keymap matrix below.
+// The underscores don't mean anything - you can have a layer called STUFF or any other name.
+// Layer names don't all need to be of the same length, obviously, and you can also skip them
+// entirely and just use numbers.
+#define _QWERTY 0
+#define _COLEMAK 1
+#define _DVORAK 2
+#define _LOWER 3
+#define _RAISE 4
+#define _ADJUST 16
+
+enum custom_keycodes {
+  QWERTY = SAFE_RANGE,
+  COLEMAK,
+  DVORAK,
+  LOWER,
+  RAISE,
+  ADJUST,
+  BACKLIT,
+  RGBLED_TOGGLE,
+  RGBLED_STEP_MODE,
+  RGBLED_INCREASE_HUE,
+  RGBLED_DECREASE_HUE,
+  RGBLED_INCREASE_SAT,
+  RGBLED_DECREASE_SAT,
+  RGBLED_INCREASE_VAL,
+  RGBLED_DECREASE_VAL,
+};
+
+enum macro_keycodes {
+  KC_SAMPLEMACRO,
+};
+
+
+// Fillers to make layering more clear
+#define _______ KC_TRNS
+#define XXXXXXX KC_NO
+//Macros
+#define M_SAMPLE M(KC_SAMPLEMACRO)
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+/* Qwerty
+ * ,-----------------------------------------------------------------------------------.
+ * | Tab  |   Q  |   W  |   E  |   R  |   T  |   Y  |   U  |   I  |   O  |   P  | Bksp |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * | Esc  |   A  |   S  |   D  |   F  |   G  |   H  |   J  |   K  |   L  |   ;  |  "   |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * | Shift|   Z  |   X  |   C  |   V  |   B  |   N  |   M  |   ,  |   .  |   /  |Enter |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |Adjust| Ctrl | Alt  | GUI  |Lower |Space |Space |Raise | Left | Down |  Up  |Right |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_QWERTY] = KEYMAP( \
+  KC_TAB,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_BSPC, \
+  KC_ESC,  KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT, \
+  KC_LSFT, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_ENT , \
+  ADJUST,  KC_LCTL, KC_LALT, KC_LGUI, LOWER,   KC_SPC,  KC_SPC,  RAISE,   KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT \
+),
+
+/* Colemak
+ * ,-----------------------------------------------------------------------------------.
+ * | Tab  |   Q  |   W  |   F  |   P  |   G  |   J  |   L  |   U  |   Y  |   ;  | Bksp |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * | Esc  |   A  |   R  |   S  |   T  |   D  |   H  |   N  |   E  |   I  |   O  |  "   |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * | Shift|   Z  |   X  |   C  |   V  |   B  |   K  |   M  |   ,  |   .  |   /  |Enter |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |Adjust| Ctrl | Alt  | GUI  |Lower |Space |Space |Raise | Left | Down |  Up  |Right |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_COLEMAK] = KEYMAP( \
+  KC_TAB,  KC_Q,    KC_W,    KC_F,    KC_P,    KC_G,    KC_J,    KC_L,    KC_U,    KC_Y,    KC_SCLN, KC_BSPC, \
+  KC_ESC,  KC_A,    KC_R,    KC_S,    KC_T,    KC_D,    KC_H,    KC_N,    KC_E,    KC_I,    KC_O,    KC_QUOT, \
+  KC_LSFT, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_K,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_ENT , \
+  ADJUST,  KC_LCTL, KC_LALT, KC_LGUI, LOWER,   KC_SPC,  KC_SPC,  RAISE,   KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT \
+),
+
+/* Dvorak
+ * ,-----------------------------------------------------------------------------------.
+ * | Tab  |   "  |   ,  |   .  |   P  |   Y  |   F  |   G  |   C  |   R  |   L  | Bksp |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * | Esc  |   A  |   O  |   E  |   U  |   I  |   D  |   H  |   T  |   N  |   S  |  /   |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * | Shift|   ;  |   Q  |   J  |   K  |   X  |   B  |   M  |   W  |   V  |   Z  |Enter |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |Adjust| Ctrl | Alt  | GUI  |Lower |Space |Space |Raise | Left | Down |  Up  |Right |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_DVORAK] = KEYMAP( \
+  KC_TAB,  KC_QUOT, KC_COMM, KC_DOT,  KC_P,    KC_Y,    KC_F,    KC_G,    KC_C,    KC_R,    KC_L,    KC_BSPC, \
+  KC_ESC,  KC_A,    KC_O,    KC_E,    KC_U,    KC_I,    KC_D,    KC_H,    KC_T,    KC_N,    KC_S,    KC_SLSH, \
+  KC_LSFT, KC_SCLN, KC_Q,    KC_J,    KC_K,    KC_X,    KC_B,    KC_M,    KC_W,    KC_V,    KC_Z,    KC_ENT , \
+  ADJUST,  KC_LCTL, KC_LALT, KC_LGUI, LOWER,   KC_SPC,  KC_SPC,  RAISE,   KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT \
+),
+
+/* Lower
+ * ,-----------------------------------------------------------------------------------.
+ * |   ~  |   !  |   @  |   #  |   $  |   %  |   ^  |   &  |   *  |   (  |   )  | Bksp |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * | Del  |  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |   _  |   +  |     |    \  |  |   |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * |      |  F7  |  F8  |  F9  |  F10 |  F11 |  F12 |ISO ~ |ISO | |      |      |Enter |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |      |      |      |      |      |             |      | Next | Vol- | Vol+ | Play |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_LOWER] = KEYMAP( \
+  KC_TILD, KC_EXLM, KC_AT,   KC_HASH, KC_DLR,  KC_PERC, KC_CIRC, KC_AMPR, KC_ASTR, KC_LPRN, KC_RPRN, KC_BSPC, \
+  KC_DEL,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_UNDS, KC_PLUS, KC_LCBR, KC_RCBR, KC_PIPE, \
+  _______, KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,S(KC_NUHS),S(KC_NUBS),_______, _______, _______, \
+  _______, _______, _______, _______, _______, _______, _______, _______, KC_MNXT, KC_VOLD, KC_VOLU, KC_MPLY \
+),
+
+/* Raise
+ * ,-----------------------------------------------------------------------------------.
+ * |   `  |   1  |   2  |   3  |   4  |   5  |   6  |   7  |   8  |   9  |   0  | Bksp |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * | Del  |  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |   -  |   =  |   [  |   ]  |  \   |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * |      |  F7  |  F8  |  F9  |  F10 |  F11 |  F12 |ISO # |ISO / |      |      |Enter |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |      |      |      |      |      |             |      | Next | Vol- | Vol+ | Play |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_RAISE] = KEYMAP( \
+  KC_GRV,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_BSPC, \
+  KC_DEL,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_MINS, KC_EQL,  KC_LBRC, KC_RBRC, KC_BSLS, \
+  _______, KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  KC_NUHS, KC_NUBS, _______, _______, _______, \
+  _______, _______, _______, _______, _______, _______, _______, _______, KC_MNXT, KC_VOLD, KC_VOLU, KC_MPLY \
+),
+
+/* Adjust (Lower + Raise)
+ * ,-----------------------------------------------------------------------------------.
+ * |      | Reset|      |      |      |      |      |      |      |      |      |  Del |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * |      |      |      |Aud on|Audoff|AGnorm|AGswap|Qwerty|Colemk|Dvorak|      |      |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * |      |      |      |      |      |      |      |      |      |      |      |      |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |      |      |      |      |      |             |      |      |      |      |      |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_ADJUST] =  KEYMAP( \
+  _______, RESET,   _______, M_SAMPLE, _______, _______, _______, _______, _______, _______, _______, KC_DEL, \
+  _______, _______, _______, AU_ON,   AU_OFF,  AG_NORM, AG_SWAP, QWERTY,  COLEMAK, DVORAK,  _______, _______, \
+  _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, \
+  _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______ \
+)
+
+
+};
+
+
+#ifdef AUDIO_ENABLE
+
+float tone_startup[][2]    = SONG(STARTUP_SOUND);
+float tone_qwerty[][2]     = SONG(QWERTY_SOUND);
+float tone_dvorak[][2]     = SONG(DVORAK_SOUND);
+float tone_colemak[][2]    = SONG(COLEMAK_SOUND);
+float tone_plover[][2]     = SONG(PLOVER_SOUND);
+float tone_plover_gb[][2]  = SONG(PLOVER_GOODBYE_SOUND);
+float music_scale[][2]     = SONG(MUSIC_SCALE_SOUND);
+float tone_goodbye[][2]    = SONG(GOODBYE_SOUND);
+#endif
+
+// define variables for reactive RGB
+bool TOG_STATUS = false;
+int RGB_current_mode;
+
+void persistant_default_layer_set(uint16_t default_layer) {
+  eeconfig_update_default_layer(default_layer);
+  default_layer_set(default_layer);
+}
+
+// Setting ADJUST layer RGB back to default
+void update_tri_layer_RGB(uint8_t layer1, uint8_t layer2, uint8_t layer3) {
+  if (IS_LAYER_ON(layer1) && IS_LAYER_ON(layer2)) {
+    rgblight_mode(RGB_current_mode);
+    layer_on(layer3);
+  } else {
+    layer_off(layer3);
+  }
+}
+
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+  switch (keycode) {
+    case QWERTY:
+      if (record->event.pressed) {
+        #ifdef AUDIO_ENABLE
+          PLAY_NOTE_ARRAY(tone_qwerty, false, 0);
+        #endif
+        persistant_default_layer_set(1UL<<_QWERTY);
+      }
+      return false;
+      break;
+    case COLEMAK:
+      if (record->event.pressed) {
+        #ifdef AUDIO_ENABLE
+          PLAY_NOTE_ARRAY(tone_colemak, false, 0);
+        #endif
+        persistant_default_layer_set(1UL<<_COLEMAK);
+      }
+      return false;
+      break;
+    case DVORAK:
+      if (record->event.pressed) {
+        #ifdef AUDIO_ENABLE
+          PLAY_NOTE_ARRAY(tone_dvorak, false, 0);
+        #endif
+        persistant_default_layer_set(1UL<<_DVORAK);
+      }
+      return false;
+      break;
+    case LOWER:
+      if (record->event.pressed) {
+          //not sure how to have keyboard check mode and set it to a variable, so my work around
+          //uses another variable that would be set to true after the first time a reactive key is pressed.
+        if (TOG_STATUS) { //TOG_STATUS checks is another reactive key currently pressed, only changes RGB mode if returns false
+        } else {
+          TOG_STATUS = !TOG_STATUS;
+          rgblight_mode(16);
+        }
+        layer_on(_LOWER);
+        update_tri_layer_RGB(_LOWER, _RAISE, _ADJUST);
+      } else {
+        rgblight_mode(RGB_current_mode);   // revert RGB to initial mode prior to RGB mode change
+        TOG_STATUS = false;
+        layer_off(_LOWER);
+        update_tri_layer_RGB(_LOWER, _RAISE, _ADJUST);
+      }
+      return false;
+      break;
+    case RAISE:
+      if (record->event.pressed) {
+        //not sure how to have keyboard check mode and set it to a variable, so my work around
+        //uses another variable that would be set to true after the first time a reactive key is pressed.
+        if (TOG_STATUS) { //TOG_STATUS checks is another reactive key currently pressed, only changes RGB mode if returns false
+        } else {
+          TOG_STATUS = !TOG_STATUS;
+          rgblight_mode(15);
+        }
+        layer_on(_RAISE);
+        update_tri_layer_RGB(_LOWER, _RAISE, _ADJUST);
+      } else {
+        rgblight_mode(RGB_current_mode);  // revert RGB to initial mode prior to RGB mode change
+        layer_off(_RAISE);
+        TOG_STATUS = false;
+        update_tri_layer_RGB(_LOWER, _RAISE, _ADJUST);
+      }
+      return false;
+      break;
+    case BACKLIT:
+      if (record->event.pressed) {
+        register_code(KC_RSFT);
+        #ifdef BACKLIGHT_ENABLE
+          backlight_step();
+        #endif
+      } else {
+        unregister_code(KC_RSFT);
+      }
+      return false;
+      break;
+      //led operations - RGB mode change now updates the RGB_current_mode to allow the right RGB mode to be set after reactive keys are released
+    case RGB_MOD:
+      if (record->event.pressed) {
+        rgblight_mode(RGB_current_mode);
+        rgblight_step();
+        RGB_current_mode = rgblight_config.mode;
+      }
+      return false;
+      break;
+  }
+  return true;
+}
+
+void matrix_init_user(void) {
+    #ifdef AUDIO_ENABLE
+        startup_user();
+    #endif
+    RGB_current_mode = rgblight_config.mode; 
+}
+
+//SSD1306 OLED init and update loop, make sure to add #define SSD1306OLED in config.h
+#ifdef SSD1306OLED
+void matrix_master_OLED_init (void) {
+    TWI_Init(TWI_BIT_PRESCALE_1, TWI_BITLENGTH_FROM_FREQ(1, 800000));
+    iota_gfx_init();   // turns on the display   
+}
+
+void matrix_scan_user(void) {
+     iota_gfx_task();  // this is what updates the display continuously
+}
+#endif
+
+#ifdef AUDIO_ENABLE
+
+void startup_user()
+{
+    _delay_ms(20); // gets rid of tick
+    PLAY_NOTE_ARRAY(tone_startup, false, 0);
+}
+
+void shutdown_user()
+{
+    PLAY_NOTE_ARRAY(tone_goodbye, false, 0);
+    _delay_ms(150);
+    stop_all_notes();
+}
+
+void music_on_user(void)
+{
+    music_scale_user();
+}
+
+void music_scale_user(void)
+{
+    PLAY_NOTE_ARRAY(music_scale, false, 0);
+}
+
+#endif
+
+/*
+ * Macro definition
+ */
+const macro_t *action_get_macro(keyrecord_t *record, uint8_t id, uint8_t opt)
+{
+    if (!eeconfig_is_enabled()) {
+      eeconfig_init();
+    }
+
+    switch (id) {
+      case KC_SAMPLEMACRO:
+        if (record->event.pressed){
+          return MACRO (I(10), T(H), T(E), T(L), T(L), T(O), T(SPACE), T(W), T(O), T(R), T(L), T(D), END);
+        }
+ 
+    }
+
+    return MACRO_NONE;
+}
diff --git a/keyboards/lets_split/keymaps/OLED_sample/readme.md b/keyboards/lets_split/keymaps/OLED_sample/readme.md
new file mode 100644
index 0000000000..02888855b8
--- /dev/null
+++ b/keyboards/lets_split/keymaps/OLED_sample/readme.md
@@ -0,0 +1,25 @@
+SSD1306 OLED Display via I2C
+======
+
+Features
+--------
+
+Some features supported by the firmware:
+
+
+* I2C connection between the two halves is required as the OLED display will use this connection as well. Note this
+  requires pull-up resistors on the data and clock lines.
+* OLED display will connect from either side
+
+
+Wiring
+------
+
+
+Work in progress...
+
+
+OLED Configuration
+-------------------------------
+
+Work in progress...
diff --git a/keyboards/lets_split/keymaps/hexwire/Makefile b/keyboards/lets_split/keymaps/hexwire/Makefile
new file mode 100644
index 0000000000..1e57612788
--- /dev/null
+++ b/keyboards/lets_split/keymaps/hexwire/Makefile
@@ -0,0 +1,5 @@
+RGBLIGHT_ENABLE = yes
+
+ifndef QUANTUM_DIR
+	include ../../../../Makefile
+endif
diff --git a/keyboards/lets_split/keymaps/hexwire/README.md b/keyboards/lets_split/keymaps/hexwire/README.md
new file mode 100644
index 0000000000..edf2b66276
--- /dev/null
+++ b/keyboards/lets_split/keymaps/hexwire/README.md
@@ -0,0 +1,108 @@
+Hexwire's Let's Split Layout
+============================
+
+### Changes from default layout
+
+- Main layer
+    - The right space bar key has been changed to backspace, as I only hit space with my left thumb
+    - Backtick is at the lower right and also serves goes to the 3rd function layer when held
+    - Enter key acts as shift when held
+    - Escape key acts as control when held
+    - Minus key at upper right
+- Lower layer
+    - Numbers are on the lower layer, to make it easier to use a numpad on the right hand
+    - Arrow keys
+    - Straight and curly brackets in the middle two columns
+    - Screenshot keys for MacOS
+- Upper layer
+    - Symbols are on the upper layer
+    - Media keys
+    - Page Up/Down, Home/End
+- 3rd function layer
+    - Function keys
+
+## Layouts
+
+### Qwerty
+
+```
+,----+----+----+----+----+----.    ,----+----+----+----+----+----.
+ TAB , Q  , W  , E  , R  , T  ,      Y  , U  , I  , O  , P  ,MINS,
+|----+----+----+----+----+----|    |----+----+----+----+----+----|
+  X0 , A  , S  , D  , F  , G  ,      H  , J  , K  , L  ,SCLN,QUOT,
+|----+----+----+----+----+----|    |----+----+----+----+----+----|
+ LSFT, Z  , X  , C  , V  , B  ,      N  , M  ,COMM,DOT ,SLSH, X4 ,
+|----+----+----+----+----+----|    |----+----+----+----+----+----|
+  X3 ,LCTL,LALT,LGUI, X1 ,SPC ,     BSPC, X2 ,LEFT,DOWN, UP ,RGHT
+`----+----+----+----+----+----'    `----+----+----+----+----+----'
+```
+
+### Colemak
+
+```
+,----+----+----+----+----+----.    ,----+----+----+----+----+----.
+ TAB , Q  , W  , F  , P  , G  ,      J  , L  , U  , Y  ,SCLN,MINS,
+|----+----+----+----+----+----|    |----+----+----+----+----+----|
+  X0 , A  , R  , S  , T  , D  ,      H  , N  , E  , I  , O  ,QUOT,
+|----+----+----+----+----+----|    |----+----+----+----+----+----|
+ LSFT, Z  , X  , C  , V  , B  ,      K  , M  ,COMM,DOT ,SLSH, X4 ,
+|----+----+----+----+----+----|    |----+----+----+----+----+----|
+  X3 ,LCTL,LALT,LGUI, X1 ,SPC ,     BSPC, X2 ,LEFT,DOWN, UP ,RGHT
+`----+----+----+----+----+----'    `----+----+----+----+----+----'
+```
+
+### Dvorak
+
+```
+,----+----+----+----+----+----.    ,----+----+----+----+----+----.
+ TAB ,QUOT,COMM,DOT , P  , Y  ,      F  , G  , C  , R  , L  ,MINS,
+|----+----+----+----+----+----|    |----+----+----+----+----+----|
+  X0 , A  , O  , E  , U  , I  ,      D  , H  , R  , N  , S  ,SLSH,
+|----+----+----+----+----+----|    |----+----+----+----+----+----|
+ LSFT,SCLN, Q  , J  , K  , X  ,      B  , M  , W  , V  , Z  , X4 ,
+|----+----+----+----+----+----|    |----+----+----+----+----+----|
+  X3 ,LCTL,LALT,LGUI, X1 ,SPC ,     BSPC, X2 ,LEFT,DOWN, UP ,RGHT
+`----+----+----+----+----+----'    `----+----+----+----+----+----'
+```
+
+### Lower
+
+```
+,----+----+----+----+----+----.    ,----+----+----+----+----+----.
+     , 1  , 2  , 3  , 4  , 5  ,      6  , 7  , 8  , 9  , 0  ,    ,
+|----+----+----+----+----+----|    |----+----+----+----+----+----|
+ DEL ,CAPP,LEFT,RGHT, UP ,LBRC,     RBRC, P4 , P5 , P6 ,PLUS,PIPE,
+|----+----+----+----+----+----|    |----+----+----+----+----+----|
+     ,CPYP,    ,    ,DOWN,LCBR,     RCBR, P1 , P2 , P3 ,MINS,    ,
+|----+----+----+----+----+----|    |----+----+----+----+----+----|
+     ,    ,    ,    ,    ,    ,     DEL ,    , P0 ,PDOT,    ,
+`----+----+----+----+----+----'    `----+----+----+----+----+----'
+```
+
+### Raise
+
+```
+,----+----+----+----+----+----.    ,----+----+----+----+----+----.
+     ,EXLM, AT ,HASH,DLR ,PERC,     CIRC,AMPR,ASTR,LPRN,RPRN,    ,
+|----+----+----+----+----+----|    |----+----+----+----+----+----|
+ DEL ,MPRV,MNXT,VOLU,PGUP,UNDS,     EQL ,HOME,    ,    ,    ,BSLS,
+|----+----+----+----+----+----|    |----+----+----+----+----+----|
+ MUTE,MSTP,MPLY,VOLD,PGDN,MINS,     PLUS,END ,    ,    ,    ,    ,
+|----+----+----+----+----+----|    |----+----+----+----+----+----|
+     ,    ,    ,    ,    ,    ,         ,    ,    ,    ,    ,    
+`----+----+----+----+----+----'    `----+----+----+----+----+----'
+```
+
+### 3rd function layer
+
+```
+,----+----+----+----+----+----.    ,----+----+----+----+----+----.
+ F12 , F1 , F2 , F3 , F4 , F5 ,      F6 , F7 , F8 , F9 ,F10 ,F11 ,
+|----+----+----+----+----+----|    |----+----+----+----+----+----|
+     ,    ,    ,    ,    ,    ,         ,    ,    ,    ,    ,    ,
+|----+----+----+----+----+----|    |----+----+----+----+----+----|
+     ,    ,    ,    ,    ,    ,         ,    ,    ,    ,    ,    ,
+|----+----+----+----+----+----|    |----+----+----+----+----+----|
+     ,    ,    ,    ,    ,    ,         ,    ,    ,    ,    ,   
+`----+----+----+----+----+----'    `----+----+----+----+----+----'
+```
diff --git a/keyboards/lets_split/keymaps/hexwire/config.h b/keyboards/lets_split/keymaps/hexwire/config.h
new file mode 100644
index 0000000000..9c8c6d7f40
--- /dev/null
+++ b/keyboards/lets_split/keymaps/hexwire/config.h
@@ -0,0 +1,70 @@
+/*
+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/>.
+*/
+
+
+#define USE_SERIAL
+
+#define TAPPING_TERM 150
+
+#undef RGBLED_NUM
+#define RGBLIGHT_ANIMATIONS
+#define RGBLED_NUM 8
+#define RGBLIGHT_HUE_STEP 8
+#define RGBLIGHT_SAT_STEP 8
+#define RGBLIGHT_VAL_STEP 8
+
+#ifdef SUBPROJECT_rev1
+    #include "../../rev1/config.h"
+    #define COMPACT_KEYMAP( \
+      k00, k01, k02, k03, k04, k05, k40, k41, k42, k43, k44, k45, \
+      k10, k11, k12, k13, k14, k15, k50, k51, k52, k53, k54, k55, \
+      k20, k21, k22, k23, k24, k25, k60, k61, k62, k63, k64, k65, \
+      k30, k31, k32, k33, k34, k35, k70, k71, k72, k73, k74, k75 \
+    ) \
+    { \
+      { KC_##k00, KC_##k01, KC_##k02, KC_##k03, KC_##k04, KC_##k05 }, \
+      { KC_##k10, KC_##k11, KC_##k12, KC_##k13, KC_##k14, KC_##k15 }, \
+      { KC_##k20, KC_##k21, KC_##k22, KC_##k23, KC_##k24, KC_##k25 }, \
+      { KC_##k30, KC_##k31, KC_##k32, KC_##k33, KC_##k34, KC_##k35 }, \
+      { KC_##k40, KC_##k41, KC_##k42, KC_##k43, KC_##k44, KC_##k45 }, \
+      { KC_##k50, KC_##k51, KC_##k52, KC_##k53, KC_##k54, KC_##k55 }, \
+      { KC_##k60, KC_##k61, KC_##k62, KC_##k63, KC_##k64, KC_##k65 }, \
+      { KC_##k70, KC_##k71, KC_##k72, KC_##k73, KC_##k74, KC_##k75 } \
+    }
+#endif
+#ifdef SUBPROJECT_rev2
+    #include "../../rev2/config.h"
+    #define COMPACT_KEYMAP( \
+      k00, k01, k02, k03, k04, k05, k45, k44, k43, k42, k41, k40, \
+      k10, k11, k12, k13, k14, k15, k55, k54, k53, k52, k51, k50, \
+      k20, k21, k22, k23, k24, k25, k65, k64, k63, k62, k61, k60, \
+      k30, k31, k32, k33, k34, k35, k75, k74, k73, k72, k71, k70 \
+      ) \
+      { \
+        { KC_##k00, KC_##k01, KC_##k02, KC_##k03, KC_##k04, KC_##k05 }, \
+        { KC_##k10, KC_##k11, KC_##k12, KC_##k13, KC_##k14, KC_##k15 }, \
+        { KC_##k20, KC_##k21, KC_##k22, KC_##k23, KC_##k24, KC_##k25 }, \
+        { KC_##k30, KC_##k31, KC_##k32, KC_##k33, KC_##k34, KC_##k35 }, \
+        { KC_##k40, KC_##k41, KC_##k42, KC_##k43, KC_##k44, KC_##k45 }, \
+        { KC_##k50, KC_##k51, KC_##k52, KC_##k53, KC_##k54, KC_##k55 }, \
+        { KC_##k60, KC_##k61, KC_##k62, KC_##k63, KC_##k64, KC_##k65 }, \
+        { KC_##k70, KC_##k71, KC_##k72, KC_##k73, KC_##k74, KC_##k75 } \
+      }
+#endif
+#ifdef SUBPROJECT_rev2fliphalf
+	#include "../../rev2fliphalf/config.h"
+#endif
diff --git a/keyboards/lets_split/keymaps/hexwire/keymap.c b/keyboards/lets_split/keymaps/hexwire/keymap.c
new file mode 100644
index 0000000000..f8370490d6
--- /dev/null
+++ b/keyboards/lets_split/keymaps/hexwire/keymap.c
@@ -0,0 +1,205 @@
+#include "lets_split.h"
+#include "action_layer.h"
+#include "eeconfig.h"
+
+extern keymap_config_t keymap_config;
+
+#define _QWERTY 0
+#define _COLEMAK 1
+#define _DVORAK 2
+#define _LOWER 3
+#define _RAISE 4
+#define _FN3 5
+#define _FN4 6
+#define _ADJUST 16
+
+enum custom_keycodes {
+  QWERTY = SAFE_RANGE,
+  COLEMAK,
+  DVORAK,
+  LOWER,
+  RAISE,
+  FN3,
+  FN4,
+  ADJUST,
+};
+
+#define KC_ KC_TRNS
+#define _______ KC_TRNS
+
+#define KC_CAPW LGUI(LSFT(KC_3))        // Capture whole screen
+#define KC_CPYW LGUI(LSFT(LCTL(KC_3)))  // Copy whole screen
+#define KC_CAPP LGUI(LSFT(KC_4))        // Capture portion of screen
+#define KC_CPYP LGUI(LSFT(LCTL(KC_4)))  // Copy portion of screen
+#define KC_X0 MT(MOD_LCTL, KC_ESC)
+#define KC_X1 LOWER
+#define KC_X2 RAISE
+#define KC_X3 LT(_FN3, KC_GRV)
+#define KC_X4 MT(MOD_LSFT, KC_ENT)
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+  [_QWERTY] = COMPACT_KEYMAP(
+  //,----+----+----+----+----+----.    ,----+----+----+----+----+----.
+     TAB , Q  , W  , E  , R  , T  ,      Y  , U  , I  , O  , P  ,MINS,
+  //|----+----+----+----+----+----|    |----+----+----+----+----+----|
+      X0 , A  , S  , D  , F  , G  ,      H  , J  , K  , L  ,SCLN,QUOT,
+  //|----+----+----+----+----+----|    |----+----+----+----+----+----|
+     LSFT, Z  , X  , C  , V  , B  ,      N  , M  ,COMM,DOT ,SLSH, X4 ,
+  //|----+----+----+----+----+----|    |----+----+----+----+----+----|
+      X3 ,LCTL,LALT,LGUI, X1 ,SPC ,     BSPC, X2 ,LEFT,DOWN, UP ,RGHT
+  //`----+----+----+----+----+----'    `----+----+----+----+----+----'
+  ),
+
+  [_COLEMAK] = COMPACT_KEYMAP(
+  //,----+----+----+----+----+----.    ,----+----+----+----+----+----.
+     TAB , Q  , W  , F  , P  , G  ,      J  , L  , U  , Y  ,SCLN,MINS,
+  //|----+----+----+----+----+----|    |----+----+----+----+----+----|
+      X0 , A  , R  , S  , T  , D  ,      H  , N  , E  , I  , O  ,QUOT,
+  //|----+----+----+----+----+----|    |----+----+----+----+----+----|
+     LSFT, Z  , X  , C  , V  , B  ,      K  , M  ,COMM,DOT ,SLSH, X4 ,
+  //|----+----+----+----+----+----|    |----+----+----+----+----+----|
+      X3 ,LCTL,LALT,LGUI, X1 ,SPC ,     BSPC, X2 ,LEFT,DOWN, UP ,RGHT
+  //`----+----+----+----+----+----'    `----+----+----+----+----+----'
+  ),
+
+  [_DVORAK] = COMPACT_KEYMAP(
+  //,----+----+----+----+----+----.    ,----+----+----+----+----+----.
+     TAB ,QUOT,COMM,DOT , P  , Y  ,      F  , G  , C  , R  , L  ,MINS,
+  //|----+----+----+----+----+----|    |----+----+----+----+----+----|
+      X0 , A  , O  , E  , U  , I  ,      D  , H  , R  , N  , S  ,SLSH,
+  //|----+----+----+----+----+----|    |----+----+----+----+----+----|
+     LSFT,SCLN, Q  , J  , K  , X  ,      B  , M  , W  , V  , Z  , X4 ,
+  //|----+----+----+----+----+----|    |----+----+----+----+----+----|
+      X3 ,LCTL,LALT,LGUI, X1 ,SPC ,     BSPC, X2 ,LEFT,DOWN, UP ,RGHT
+  //`----+----+----+----+----+----'    `----+----+----+----+----+----'
+  ),
+
+  [_LOWER] = COMPACT_KEYMAP(
+  //,----+----+----+----+----+----.    ,----+----+----+----+----+----.
+         , 1  , 2  , 3  , 4  , 5  ,      6  , 7  , 8  , 9  , 0  ,    ,
+  //|----+----+----+----+----+----|    |----+----+----+----+----+----|
+     DEL ,CAPP,LEFT,RGHT, UP ,LBRC,     RBRC, P4 , P5 , P6 ,PLUS,PIPE,
+  //|----+----+----+----+----+----|    |----+----+----+----+----+----|
+         ,CPYP,    ,    ,DOWN,LCBR,     RCBR, P1 , P2 , P3 ,MINS,    ,
+  //|----+----+----+----+----+----|    |----+----+----+----+----+----|
+         ,    ,    ,    ,    ,    ,     DEL ,    , P0 ,PDOT,    ,   
+  //`----+----+----+----+----+----'    `----+----+----+----+----+----'
+  ),
+
+  [_RAISE] = COMPACT_KEYMAP(
+  //,----+----+----+----+----+----.    ,----+----+----+----+----+----.
+         ,EXLM, AT ,HASH,DLR ,PERC,     CIRC,AMPR,ASTR,LPRN,RPRN,    ,
+  //|----+----+----+----+----+----|    |----+----+----+----+----+----|
+     DEL ,MPRV,MNXT,VOLU,PGUP,UNDS,     EQL ,HOME,    ,    ,    ,BSLS,
+  //|----+----+----+----+----+----|    |----+----+----+----+----+----|
+     MUTE,MSTP,MPLY,VOLD,PGDN,MINS,     PLUS,END ,    ,    ,    ,    ,
+  //|----+----+----+----+----+----|    |----+----+----+----+----+----|
+         ,    ,    ,    ,    ,    ,         ,    ,    ,    ,    ,    
+  //`----+----+----+----+----+----'    `----+----+----+----+----+----'
+  ),
+
+  [_FN3] = COMPACT_KEYMAP(
+  //,----+----+----+----+----+----.    ,----+----+----+----+----+----.
+     F12 , F1 , F2 , F3 , F4 , F5 ,      F6 , F7 , F8 , F9 ,F10 ,F11 ,
+  //|----+----+----+----+----+----|    |----+----+----+----+----+----|
+         ,    ,    ,    ,    ,    ,         ,    ,    ,    ,    ,    ,
+  //|----+----+----+----+----+----|    |----+----+----+----+----+----|
+         ,    ,    ,    ,    ,    ,         ,    ,    ,    ,    ,    ,
+  //|----+----+----+----+----+----|    |----+----+----+----+----+----|
+         ,    ,    ,    ,    ,    ,         ,    ,    ,    ,    ,   
+  //`----+----+----+----+----+----'    `----+----+----+----+----+----'
+  ),
+
+/* Adjust (Lower + Raise)
+ * ,-----------------------------------------------------------------------------------.
+ * |      | Reset|RGB Tg|RGB Md|Hue Up|Hue Dn|Sat Up|Sat Dn|Val Up|Val Dn|      |      |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * |      |      |      |Aud on|Audoff|AGnorm|AGswap|Qwerty|Colemk|Dvorak|      |      |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * |      |      |      |      |      |      |      |      |      |      |      |      |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |      |      |      |      |      |             |      |      |      |      |      |
+ * `-----------------------------------------------------------------------------------'
+ */
+  [_ADJUST] = KEYMAP( \
+    _______, RESET  , RGB_TOG, RGB_MOD, RGB_HUD, RGB_HUI, RGB_SAD, RGB_SAI, RGB_VAD, RGB_VAI, _______, _______, \
+    _______, _______, _______, AU_ON,   AU_OFF,  AG_NORM, AG_SWAP, QWERTY,  COLEMAK, DVORAK,  _______, _______, \
+    _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, \
+    _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______ \
+  )
+
+
+};
+
+#ifdef AUDIO_ENABLE
+float tone_qwerty[][2]     = SONG(QWERTY_SOUND);
+float tone_dvorak[][2]     = SONG(DVORAK_SOUND);
+float tone_colemak[][2]    = SONG(COLEMAK_SOUND);
+#endif
+
+void persistant_default_layer_set(uint16_t default_layer) {
+  eeconfig_update_default_layer(default_layer);
+  default_layer_set(default_layer);
+}
+
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+  switch (keycode) {
+    case QWERTY:
+      if (record->event.pressed) {
+        #ifdef AUDIO_ENABLE
+          PLAY_NOTE_ARRAY(tone_qwerty, false, 0);
+        #endif
+        persistant_default_layer_set(1UL<<_QWERTY);
+      }
+      return false;
+      break;
+    case COLEMAK:
+      if (record->event.pressed) {
+        #ifdef AUDIO_ENABLE
+          PLAY_NOTE_ARRAY(tone_colemak, false, 0);
+        #endif
+        persistant_default_layer_set(1UL<<_COLEMAK);
+      }
+      return false;
+      break;
+    case DVORAK:
+      if (record->event.pressed) {
+        #ifdef AUDIO_ENABLE
+          PLAY_NOTE_ARRAY(tone_dvorak, false, 0);
+        #endif
+        persistant_default_layer_set(1UL<<_DVORAK);
+      }
+      return false;
+      break;
+    case LOWER:
+      if (record->event.pressed) {
+        layer_on(_LOWER);
+        update_tri_layer(_LOWER, _RAISE, _ADJUST);
+      } else {
+        layer_off(_LOWER);
+        update_tri_layer(_LOWER, _RAISE, _ADJUST);
+      }
+      return false;
+      break;
+    case RAISE:
+      if (record->event.pressed) {
+        layer_on(_RAISE);
+        update_tri_layer(_LOWER, _RAISE, _ADJUST);
+      } else {
+        layer_off(_RAISE);
+        update_tri_layer(_LOWER, _RAISE, _ADJUST);
+      }
+      return false;
+      break;
+    case ADJUST:
+      if (record->event.pressed) {
+        layer_on(_ADJUST);
+      } else {
+        layer_off(_ADJUST);
+      }
+      return false;
+      break;
+  }
+  return true;
+}
diff --git a/keyboards/lets_split/keymaps/smt/config.h b/keyboards/lets_split/keymaps/smt/config.h
new file mode 100644
index 0000000000..ba271d1ac6
--- /dev/null
+++ b/keyboards/lets_split/keymaps/smt/config.h
@@ -0,0 +1,34 @@
+/*
+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/>.
+*/
+
+
+#define USE_SERIAL
+
+#define MASTER_LEFT
+// #define _MASTER_RIGHT
+// #define EE_HANDS
+
+
+#ifdef SUBPROJECT_rev1
+    #include "../../rev1/config.h"
+#endif
+#ifdef SUBPROJECT_rev2
+    #include "../../rev2/config.h"
+#endif
+#ifdef SUBPROJECT_rev2fliphalf
+	#include "../../rev2fliphalf/config.h"
+#endif
diff --git a/keyboards/lets_split/keymaps/smt/keymap.c b/keyboards/lets_split/keymaps/smt/keymap.c
new file mode 100644
index 0000000000..c4bdb7ebc4
--- /dev/null
+++ b/keyboards/lets_split/keymaps/smt/keymap.c
@@ -0,0 +1,219 @@
+#include "lets_split.h"
+#include "action_layer.h"
+#include "eeconfig.h"
+
+extern keymap_config_t keymap_config;
+
+// Each layer gets a name for readability, which is then used in the keymap matrix below.
+// The underscores don't mean anything - you can have a layer called STUFF or any other name.
+// Layer names don't all need to be of the same length, obviously, and you can also skip them
+// entirely and just use numbers.
+#define _QWERTY 0
+#define _COLEMAK 1
+#define _DVORAK 2
+#define _LOWER 3
+#define _RAISE 4
+#define _ADJUST 16
+
+enum custom_keycodes {
+  QWERTY = SAFE_RANGE,
+  COLEMAK,
+  DVORAK,
+  LOWER,
+  RAISE,
+  ADJUST,
+};
+
+// Fillers to make layering more clear
+#define _______ KC_TRNS
+#define XXXXXXX KC_NO
+
+// Custom macros
+#define CTL_ESC     CTL_T(KC_ESC)               // Tap for Esc, hold for Ctrl
+#define SFT_ENT     SFT_T(KC_ENT)               // Tap for Enter, hold for Shift
+#define HPR_TAB     ALL_T(KC_TAB)               // Tap for Tab, hold for Hyper (Super+Ctrl+Alt+Shift)
+#define MEH_GRV     MEH_T(KC_GRV)               // Tap for Backtick, hold for Meh (Ctrl+Alt+Shift)
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+/* Qwerty
+ * ,-----------------------------------------. ,-----------------------------------------.
+ * | Tab  |   Q  |   W  |   E  |   R  |   T  | |   Y  |   U  |   I  |   O  |   P  | Bksp |
+ * |------+------+------+------+------+------| |------+------+------+------+------+------|
+ * | Esc  |   A  |   S  |   D  |   F  |   G  | |   H  |   J  |   K  |   L  |   ;  |  "   |
+ * |------+------+------+------+------+------| |------+------+------+------+------+------|
+ * | Shift|   Z  |   X  |   C  |   V  |   B  | |   N  |   M  |   ,  |   .  |   /  |Enter |
+ * |------+------+------+------+------+------| |------+------+------+------+------+------|
+ * |   `  | Ctrl | Alt  | GUI  |Lower |Space | |Space |Raise | Left | Down |  Up  |Right |
+ * `-----------------------------------------' `-----------------------------------------'
+ */
+[_QWERTY] = KEYMAP( \
+  HPR_TAB, KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_BSPC, \
+  CTL_ESC, KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT, \
+  KC_LSFT, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, SFT_ENT, \
+  MEH_GRV, KC_LCTL, KC_LALT, KC_LGUI, LOWER,   KC_SPC,  KC_SPC,  RAISE,   KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT
+),
+
+/* Colemak
+ * ,-----------------------------------------. ,-----------------------------------------.
+ * | Tab  |   Q  |   W  |   F  |   P  |   G  | |   J  |   L  |   U  |   Y  |   ;  | Bksp |
+ * |------+------+------+------+------+------| |------+------+------+------+------+------|
+ * | Esc  |   A  |   R  |   S  |   T  |   D  | |   H  |   N  |   E  |   I  |   O  |  "   |
+ * |------+------+------+------+------+------| |------+------+------+------+------+------|
+ * | Shift|   Z  |   X  |   C  |   V  |   B  | |   K  |   M  |   ,  |   .  |   /  |Enter |
+ * |------+------+------+------+------+------| |------+------+------+------+------+------|
+ * |   `  | Ctrl | Alt  | GUI  |Lower |Space | |Space |Raise | Left | Down |  Up  |Right |
+ * `-----------------------------------------' `-----------------------------------------'
+ */
+[_COLEMAK] = KEYMAP( \
+  HPR_TAB, KC_Q,    KC_W,    KC_F,    KC_P,    KC_G,    KC_J,    KC_L,    KC_U,    KC_Y,    KC_SCLN, KC_BSPC, \
+  CTL_ESC, KC_A,    KC_R,    KC_S,    KC_T,    KC_D,    KC_H,    KC_N,    KC_E,    KC_I,    KC_O,    KC_QUOT, \
+  KC_LSFT, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_K,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, SFT_ENT, \
+  MEH_GRV, KC_LCTL, KC_LALT, KC_LGUI, LOWER,   KC_SPC,  KC_SPC,  RAISE,   KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT
+),
+
+/* Dvorak
+ * ,-----------------------------------------. ,-----------------------------------------.
+ * | Tab  |   "  |   ,  |   .  |   P  |   Y  | |   F  |   G  |   C  |   R  |   L  | Bksp |
+ * |------+------+------+------+------+------| |------+------+------+------+------+------|
+ * | Esc  |   A  |   O  |   E  |   U  |   I  | |   D  |   H  |   T  |   N  |   S  |  -   |
+ * |------+------+------+------+------+------| |------+------+------+------+------+------|
+ * | Shift|   ;  |   Q  |   J  |   K  |   X  | |   B  |   M  |   W  |   V  |   Z  |Enter |
+ * |------+------+------+------+------+------| |------+------+------+------+------+------|
+ * |   `  | Ctrl | Alt  | GUI  |Lower |Space | |Space |Raise | Left | Down |  Up  |Right |
+ * `-----------------------------------------' `-----------------------------------------'
+ */
+[_DVORAK] = KEYMAP( \
+  HPR_TAB, KC_QUOT, KC_COMM, KC_DOT,  KC_P,    KC_Y,    KC_F,    KC_G,    KC_C,    KC_R,    KC_L,    KC_BSPC, \
+  CTL_ESC, KC_A,    KC_O,    KC_E,    KC_U,    KC_I,    KC_D,    KC_H,    KC_T,    KC_N,    KC_S,    KC_MINS, \
+  KC_LSFT, KC_SCLN, KC_Q,    KC_J,    KC_K,    KC_X,    KC_B,    KC_M,    KC_W,    KC_V,    KC_Z,    SFT_ENT, \
+  MEH_GRV, KC_LCTL, KC_LALT, KC_LGUI, LOWER,   KC_SPC,  KC_SPC,  RAISE,   KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT
+),
+
+/* Lower
+ * ,-----------------------------------------. ,-----------------------------------------.
+ * |   0  |   1  |   2  |   3  |   4  |   5  | |   6  |   7  |   8  |   9  |   0  | Del  |
+ * |------+------+------+------+------+------| |------+------+------+------+------+------|
+ * |   $  |  F1  |  F2  |  F3  |  F4  |  F5  | |  F6  |   4  |   5  |   6  |      |      |
+ * |------+------+------+------+------+------| |------+------+------+------+------+------|
+ * |      |  F7  |  F8  |  F9  |  F10 |  F11 | |  F12 |   1  |   2  |   3  |      |      |
+ * |------+------+------+------+------+------| |------+------+------+------+------+------|
+ * |      |      |      |      |      |      | |      |      | Next | Vol- | Vol+ | Play |
+ * `-----------------------------------------' `-----------------------------------------'
+ */
+[_LOWER] = KEYMAP( \
+  ALL_T(KC_0),   KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_DEL, \
+  CTL_T(KC_DLR), KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_4,    KC_5,    KC_6,    _______, _______, \
+  _______,       KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  KC_1,    KC_2,    KC_3,    _______, _______, \
+  _______,       _______, _______, _______, _______, _______, _______, _______, KC_MNXT, KC_VOLD, KC_VOLU, KC_MPLY
+),
+
+/* Raise
+ * ,-----------------------------------------. ,-----------------------------------------.
+ * |   ~  |   !  |   @  |   #  |   $  |   %  | |   ^  |   &  |   *  |   (  |   )  | Del  |
+ * |------+------+------+------+------+------| |------+------+------+------+------+------|
+ * |      |      |      |      |      |      | |   _  |   ?  |   +  |   {  |   }  |  |   |
+ * |------+------+------+------+------+------| |------+------+------+------+------+------|
+ * |      |      |      |      |      |      | |   -  |   /  |   =  |   [  |   ]  |  \   |
+ * |------+------+------+------+------+------| |------+------+------+------+------+------|
+ * |      |      |      |      |      |      | |      |      | Home |PageDn|PageUp| End  |
+ * `-----------------------------------------' `-----------------------------------------'
+ */
+[_RAISE] = KEYMAP( \
+  ALL_T(KC_TILD), KC_EXLM, KC_AT,   KC_HASH, KC_DLR,  KC_PERC, KC_CIRC, KC_AMPR, KC_ASTR, KC_LPRN, KC_RPRN, KC_DEL, \
+  _______,        _______, _______, _______, _______, _______, KC_UNDS, KC_QUES, KC_PLUS, KC_LCBR, KC_RCBR, KC_PIPE, \
+  _______,        _______, _______, _______, _______, _______, KC_MINS, KC_SLSH, KC_EQL,  KC_LBRC, KC_RBRC, SFT_T(KC_BSLS), \
+  _______,        _______, _______, _______, _______, _______, _______, _______, KC_HOME, KC_PGDN, KC_PGUP, KC_END
+),
+
+/* Adjust (Lower + Raise)
+ * ,-----------------------------------------. ,-----------------------------------------.
+ * |      | Reset|      |      |      |      | |      |      |      |      |      | Reset|
+ * |------+------+------+------+------+------| |------+------+------+------+------+------|
+ * |      |      |      |Aud on|Audoff|AGnorm| |AGswap|Qwerty|Colemk|Dvorak|      |      |
+ * |------+------+------+------+------+------| |------+------+------+------+------+------|
+ * |      |      |      |      |      |      | |      |      |      |      |      |      |
+ * |------+------+------+------+------+------| |------+------+------+------+------+------|
+ * |      |      |      |      |      |      | |      |      |      |      |      |      |
+ * `-----------------------------------------' `-----------------------------------------'
+ */
+[_ADJUST] = KEYMAP( \
+  _______, RESET,   _______, _______, _______, _______, _______, _______, _______, _______, _______, RESET, \
+  _______, _______, _______, AU_ON,   AU_OFF,  AG_NORM, AG_SWAP, QWERTY,  COLEMAK, DVORAK,  _______, _______, \
+  _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, \
+  _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______
+)
+
+};
+
+#ifdef AUDIO_ENABLE
+float tone_qwerty[][2]     = SONG(QWERTY_SOUND);
+float tone_dvorak[][2]     = SONG(DVORAK_SOUND);
+float tone_colemak[][2]    = SONG(COLEMAK_SOUND);
+#endif
+
+void persistant_default_layer_set(uint16_t default_layer) {
+  eeconfig_update_default_layer(default_layer);
+  default_layer_set(default_layer);
+}
+
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+  switch (keycode) {
+    case QWERTY:
+      if (record->event.pressed) {
+        #ifdef AUDIO_ENABLE
+          PLAY_NOTE_ARRAY(tone_qwerty, false, 0);
+        #endif
+        persistant_default_layer_set(1UL<<_QWERTY);
+      }
+      return false;
+      break;
+    case COLEMAK:
+      if (record->event.pressed) {
+        #ifdef AUDIO_ENABLE
+          PLAY_NOTE_ARRAY(tone_colemak, false, 0);
+        #endif
+        persistant_default_layer_set(1UL<<_COLEMAK);
+      }
+      return false;
+      break;
+    case DVORAK:
+      if (record->event.pressed) {
+        #ifdef AUDIO_ENABLE
+          PLAY_NOTE_ARRAY(tone_dvorak, false, 0);
+        #endif
+        persistant_default_layer_set(1UL<<_DVORAK);
+      }
+      return false;
+      break;
+    case LOWER:
+      if (record->event.pressed) {
+        layer_on(_LOWER);
+        update_tri_layer(_LOWER, _RAISE, _ADJUST);
+      } else {
+        layer_off(_LOWER);
+        update_tri_layer(_LOWER, _RAISE, _ADJUST);
+      }
+      return false;
+      break;
+    case RAISE:
+      if (record->event.pressed) {
+        layer_on(_RAISE);
+        update_tri_layer(_LOWER, _RAISE, _ADJUST);
+      } else {
+        layer_off(_RAISE);
+        update_tri_layer(_LOWER, _RAISE, _ADJUST);
+      }
+      return false;
+      break;
+    case ADJUST:
+      if (record->event.pressed) {
+        layer_on(_ADJUST);
+      } else {
+        layer_off(_ADJUST);
+      }
+      return false;
+      break;
+  }
+  return true;
+}
diff --git a/keyboards/lets_split/keymaps/smt/readme.md b/keyboards/lets_split/keymaps/smt/readme.md
new file mode 100644
index 0000000000..20bc662f0a
--- /dev/null
+++ b/keyboards/lets_split/keymaps/smt/readme.md
@@ -0,0 +1,88 @@
+# smt's Let's Split keymap
+
+This keymap is ported from my Planck keymap.
+
+
+## Qwerty
+
+```
+,-----------------------------------------. ,-----------------------------------------.
+| Tab  |   Q  |   W  |   E  |   R  |   T  | |   Y  |   U  |   I  |   O  |   P  | Bksp |
+|------+------+------+------+------+------| |------+------+------+------+------+------|
+| Esc  |   A  |   S  |   D  |   F  |   G  | |   H  |   J  |   K  |   L  |   ;  |  "   |
+|------+------+------+------+------+------| |------+------+------+------+------+------|
+| Shift|   Z  |   X  |   C  |   V  |   B  | |   N  |   M  |   ,  |   .  |   /  |Enter |
+|------+------+------+------+------+------| |------+------+------+------+------+------|
+|   `  | Ctrl | Alt  | GUI  |Lower |Space | |Space |Raise | Left | Down |  Up  |Right |
+`-----------------------------------------' `-----------------------------------------'
+```
+
+## Colemak
+
+```
+,-----------------------------------------. ,-----------------------------------------.
+| Tab  |   Q  |   W  |   F  |   P  |   G  | |   J  |   L  |   U  |   Y  |   ;  | Bksp |
+|------+------+------+------+------+------| |------+------+------+------+------+------|
+| Esc  |   A  |   R  |   S  |   T  |   D  | |   H  |   N  |   E  |   I  |   O  |  "   |
+|------+------+------+------+------+------| |------+------+------+------+------+------|
+| Shift|   Z  |   X  |   C  |   V  |   B  | |   K  |   M  |   ,  |   .  |   /  |Enter |
+|------+------+------+------+------+------| |------+------+------+------+------+------|
+|   `  | Ctrl | Alt  | GUI  |Lower |Space | |Space |Raise | Left | Down |  Up  |Right |
+`-----------------------------------------' `-----------------------------------------'
+```
+
+## Dvorak
+
+```
+,-----------------------------------------. ,-----------------------------------------.
+| Tab  |   "  |   ,  |   .  |   P  |   Y  | |   F  |   G  |   C  |   R  |   L  | Bksp |
+|------+------+------+------+------+------| |------+------+------+------+------+------|
+| Esc  |   A  |   O  |   E  |   U  |   I  | |   D  |   H  |   T  |   N  |   S  |  -   |
+|------+------+------+------+------+------| |------+------+------+------+------+------|
+| Shift|   ;  |   Q  |   J  |   K  |   X  | |   B  |   M  |   W  |   V  |   Z  |Enter |
+|------+------+------+------+------+------| |------+------+------+------+------+------|
+|   `  | Ctrl | Alt  | GUI  |Lower |Space | |Space |Raise | Left | Down |  Up  |Right |
+`-----------------------------------------' `-----------------------------------------'
+```
+
+## Lower
+
+```
+,-----------------------------------------. ,-----------------------------------------.
+|   0  |   1  |   2  |   3  |   4  |   5  | |   6  |   7  |   8  |   9  |   0  | Del  |
+|------+------+------+------+------+------| |------+------+------+------+------+------|
+|   $  |  F1  |  F2  |  F3  |  F4  |  F5  | |  F6  |   4  |   5  |   6  |      |      |
+|------+------+------+------+------+------| |------+------+------+------+------+------|
+|      |  F7  |  F8  |  F9  |  F10 |  F11 | |  F12 |   1  |   2  |   3  |      |      |
+|------+------+------+------+------+------| |------+------+------+------+------+------|
+|      |      |      |      |      |      | |      |      | Next | Vol- | Vol+ | Play |
+`-----------------------------------------' `-----------------------------------------'
+```
+
+## Raise
+
+```
+,-----------------------------------------. ,-----------------------------------------.
+|   ~  |   !  |   @  |   #  |   $  |   %  | |   ^  |   &  |   *  |   (  |   )  | Del  |
+|------+------+------+------+------+------| |------+------+------+------+------+------|
+|      |      |      |      |      |      | |   _  |   ?  |   +  |   {  |   }  |  |   |
+|------+------+------+------+------+------| |------+------+------+------+------+------|
+|      |      |      |      |      |      | |   -  |   /  |   =  |   [  |   ]  |  \   |
+|------+------+------+------+------+------| |------+------+------+------+------+------|
+|      |      |      |      |      |      | |      |      | Home |PageDn|PageUp| End  |
+`-----------------------------------------' `-----------------------------------------'
+```
+
+## Adjust (Lower + Raise)
+
+```
+,-----------------------------------------. ,-----------------------------------------.
+|      | Reset|      |      |      |      | |      |      |      |      |      | Reset|
+|------+------+------+------+------+------| |------+------+------+------+------+------|
+|      |      |      |Aud on|Audoff|AGnorm| |AGswap|Qwerty|Colemk|Dvorak|      |      |
+|------+------+------+------+------+------| |------+------+------+------+------+------|
+|      |      |      |      |      |      | |      |      |      |      |      |      |
+|------+------+------+------+------+------| |------+------+------+------+------+------|
+|      |      |      |      |      |      | |      |      |      |      |      |      |
+`-----------------------------------------' `-----------------------------------------'
+```