diff --git a/keyboards/kc60/config.h b/keyboards/kc60/config.h
index c4a9b9ff82..29695d0b9d 100644
--- a/keyboards/kc60/config.h
+++ b/keyboards/kc60/config.h
@@ -62,7 +62,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //#define MATRIX_HAS_GHOST
 
 /* number of backlight levels */
-#define BACKLIGHT_LEVELS 3
+#define BACKLIGHT_LEVELS 5
 
 /* Mechanical locking support. Use KC_LCAP, KC_LNUM or KC_LSCR instead in keymap */
 #define LOCKING_SUPPORT_ENABLE
diff --git a/keyboards/lets_split/config.h b/keyboards/lets_split/config.h
index ec99514aa3..f4d900accb 100644
--- a/keyboards/lets_split/config.h
+++ b/keyboards/lets_split/config.h
@@ -41,6 +41,11 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 // #define USE_I2C
 
+// Use serial if not using I2C
+#ifndef USE_I2C
+#  define USE_SERIAL
+#endif
+
 // #define EE_HANDS
 
 #define I2C_MASTER_LEFT
@@ -94,4 +99,4 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //#define NO_ACTION_MACRO
 //#define NO_ACTION_FUNCTION
 
-#endif
\ No newline at end of file
+#endif
diff --git a/keyboards/lets_split/i2c.c b/keyboards/lets_split/i2c.c
index c72789403e..084c890c40 100644
--- a/keyboards/lets_split/i2c.c
+++ b/keyboards/lets_split/i2c.c
@@ -6,6 +6,8 @@
 #include <stdbool.h>
 #include "i2c.h"
 
+#ifdef USE_I2C
+
 // Limits the amount of we wait for any one i2c transaction.
 // Since were running SCL line 100kHz (=> 10μs/bit), and each transactions is
 // 9 bits, a single transaction will take around 90μs to complete.
@@ -157,3 +159,4 @@ ISR(TWI_vect) {
   // Reset everything, so we are ready for the next TWI interrupt
   TWCR |= (1<<TWIE) | (1<<TWINT) | (ack<<TWEA) | (1<<TWEN);
 }
+#endif
diff --git a/keyboards/lets_split/keymaps/i2c/config.h b/keyboards/lets_split/keymaps/i2c/config.h
new file mode 100644
index 0000000000..2671fabf6d
--- /dev/null
+++ b/keyboards/lets_split/keymaps/i2c/config.h
@@ -0,0 +1,102 @@
+/*
+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/>.
+*/
+
+#ifndef CONFIG_H
+#define CONFIG_H
+
+#include "config_common.h"
+
+/* USB Device descriptor parameter */
+#define VENDOR_ID       0xFEED
+#define PRODUCT_ID      0x3060
+#define DEVICE_VER      0x0001
+#define MANUFACTURER    Wootpatoot
+#define PRODUCT         Lets Split
+#define DESCRIPTION     A split keyboard for the cheap makers
+
+/* key matrix size */
+// Rows are doubled-up
+#define MATRIX_ROWS 8
+#define MATRIX_COLS 6
+
+// wiring of each half
+#define MATRIX_ROW_PINS { B5, B4, E6, D7 }
+#define MATRIX_COL_PINS { F4, F5, F6, F7, B1, B3 }
+
+#define CATERINA_BOOTLOADER
+
+#define USE_I2C
+
+// Use serial if not using I2C
+#ifndef USE_I2C
+#  define USE_SERIAL
+#endif
+
+// #define EE_HANDS
+
+#define I2C_MASTER_LEFT
+// #define I2C_MASTER_RIGHT
+
+/* COL2ROW or ROW2COL */
+#define DIODE_DIRECTION COL2ROW
+
+/* define if matrix has ghost */
+//#define MATRIX_HAS_GHOST
+
+/* number of backlight levels */
+// #define BACKLIGHT_LEVELS 3
+
+/* Set 0 if debouncing isn't needed */
+#define DEBOUNCING_DELAY 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 */
+#define IS_COMMAND() ( \
+    keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
+)
+
+/* ws2812 RGB LED */
+#define RGB_DI_PIN D4
+#define RGBLIGHT_TIMER
+#define RGBLED_NUM 8     // Number of LEDs
+#define RGBLIGHT_HUE_STEP 10
+#define RGBLIGHT_SAT_STEP 17
+#define RGBLIGHT_VAL_STEP 17
+
+/*
+ * Feature disable options
+ *  These options are also useful to firmware size reduction.
+ */
+
+/* disable debug print */
+// #define NO_DEBUG
+
+/* disable print */
+// #define NO_PRINT
+
+/* disable action features */
+//#define NO_ACTION_LAYER
+//#define NO_ACTION_TAPPING
+//#define NO_ACTION_ONESHOT
+//#define NO_ACTION_MACRO
+//#define NO_ACTION_FUNCTION
+
+#endif
diff --git a/keyboards/lets_split/keymaps/i2c/keymap.c b/keyboards/lets_split/keymaps/i2c/keymap.c
new file mode 100644
index 0000000000..0d2d94b672
--- /dev/null
+++ b/keyboards/lets_split/keymaps/i2c/keymap.c
@@ -0,0 +1,214 @@
+#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
+
+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,   _______, _______, _______, _______, _______, _______, _______, _______, _______, KC_DEL, \
+  _______, _______, _______, 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;
+}
\ No newline at end of file
diff --git a/keyboards/lets_split/keymaps/serial/config.h b/keyboards/lets_split/keymaps/serial/config.h
new file mode 100644
index 0000000000..f4d900accb
--- /dev/null
+++ b/keyboards/lets_split/keymaps/serial/config.h
@@ -0,0 +1,102 @@
+/*
+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/>.
+*/
+
+#ifndef CONFIG_H
+#define CONFIG_H
+
+#include "config_common.h"
+
+/* USB Device descriptor parameter */
+#define VENDOR_ID       0xFEED
+#define PRODUCT_ID      0x3060
+#define DEVICE_VER      0x0001
+#define MANUFACTURER    Wootpatoot
+#define PRODUCT         Lets Split
+#define DESCRIPTION     A split keyboard for the cheap makers
+
+/* key matrix size */
+// Rows are doubled-up
+#define MATRIX_ROWS 8
+#define MATRIX_COLS 6
+
+// wiring of each half
+#define MATRIX_ROW_PINS { B5, B4, E6, D7 }
+#define MATRIX_COL_PINS { F4, F5, F6, F7, B1, B3 }
+
+#define CATERINA_BOOTLOADER
+
+// #define USE_I2C
+
+// Use serial if not using I2C
+#ifndef USE_I2C
+#  define USE_SERIAL
+#endif
+
+// #define EE_HANDS
+
+#define I2C_MASTER_LEFT
+// #define I2C_MASTER_RIGHT
+
+/* COL2ROW or ROW2COL */
+#define DIODE_DIRECTION COL2ROW
+
+/* define if matrix has ghost */
+//#define MATRIX_HAS_GHOST
+
+/* number of backlight levels */
+// #define BACKLIGHT_LEVELS 3
+
+/* Set 0 if debouncing isn't needed */
+#define DEBOUNCING_DELAY 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 */
+#define IS_COMMAND() ( \
+    keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
+)
+
+/* ws2812 RGB LED */
+#define RGB_DI_PIN D4
+#define RGBLIGHT_TIMER
+#define RGBLED_NUM 8     // Number of LEDs
+#define RGBLIGHT_HUE_STEP 10
+#define RGBLIGHT_SAT_STEP 17
+#define RGBLIGHT_VAL_STEP 17
+
+/*
+ * Feature disable options
+ *  These options are also useful to firmware size reduction.
+ */
+
+/* disable debug print */
+// #define NO_DEBUG
+
+/* disable print */
+// #define NO_PRINT
+
+/* disable action features */
+//#define NO_ACTION_LAYER
+//#define NO_ACTION_TAPPING
+//#define NO_ACTION_ONESHOT
+//#define NO_ACTION_MACRO
+//#define NO_ACTION_FUNCTION
+
+#endif
diff --git a/keyboards/lets_split/keymaps/serial/keymap.c b/keyboards/lets_split/keymaps/serial/keymap.c
new file mode 100644
index 0000000000..0d2d94b672
--- /dev/null
+++ b/keyboards/lets_split/keymaps/serial/keymap.c
@@ -0,0 +1,214 @@
+#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
+
+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,   _______, _______, _______, _______, _______, _______, _______, _______, _______, KC_DEL, \
+  _______, _______, _______, 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;
+}
\ No newline at end of file
diff --git a/keyboards/lets_split/matrix.c b/keyboards/lets_split/matrix.c
index 1d768c59b3..1389690042 100644
--- a/keyboards/lets_split/matrix.c
+++ b/keyboards/lets_split/matrix.c
@@ -28,14 +28,18 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include "debug.h"
 #include "util.h"
 #include "matrix.h"
-#include "i2c.h"
-#include "serial.h"
 #include "split_util.h"
 #include "pro_micro.h"
 #include "config.h"
 
+#ifdef USE_I2C
+#  include "i2c.h"
+#else // USE_SERIAL
+#  include "serial.h"
+#endif
+
 #ifndef DEBOUNCE
-#   define DEBOUNCE	5
+#  define DEBOUNCE	5
 #endif
 
 #define ERROR_DISCONNECT_COUNT 5
@@ -145,6 +149,8 @@ uint8_t _matrix_scan(void)
     return 1;
 }
 
+#ifdef USE_I2C
+
 // Get rows from other half over i2c
 int i2c_transaction(void) {
     int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
@@ -176,7 +182,8 @@ i2c_error: // the cable is disconnceted, or something else went wrong
     return 0;
 }
 
-#ifndef USE_I2C
+#else // USE_SERIAL
+
 int serial_transaction(void) {
     int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
 
@@ -199,7 +206,7 @@ uint8_t matrix_scan(void)
 
 #ifdef USE_I2C
     if( i2c_transaction() ) {
-#else
+#else // USE_SERIAL
     if( serial_transaction() ) {
 #endif
         // turn on the indicator led when halves are disconnected
@@ -235,7 +242,7 @@ void matrix_slave_scan(void) {
         /* i2c_slave_buffer[i] = matrix[offset+i]; */
         i2c_slave_buffer[i] = matrix[offset+i];
     }
-#else
+#else // USE_SERIAL
     for (int i = 0; i < ROWS_PER_HAND; ++i) {
         serial_slave_buffer[i] = matrix[offset+i];
     }
@@ -290,7 +297,7 @@ static void  init_cols(void)
 static matrix_row_t read_cols(void)
 {
     matrix_row_t result = 0;
-    for(int x = 0; x < MATRIX_COLS; x++) {     
+    for(int x = 0; x < MATRIX_COLS; x++) {
         result |= (_SFR_IO8(col_pins[x] >> 4) & _BV(col_pins[x] & 0xF)) ? 0 : (1 << x);
     }
     return result;
@@ -298,7 +305,7 @@ static matrix_row_t read_cols(void)
 
 static void unselect_rows(void)
 {
-    for(int x = 0; x < ROWS_PER_HAND; x++) { 
+    for(int x = 0; x < ROWS_PER_HAND; x++) {
         _SFR_IO8((row_pins[x] >> 4) + 1) &=  ~_BV(row_pins[x] & 0xF);
         _SFR_IO8((row_pins[x] >> 4) + 2) |= _BV(row_pins[x] & 0xF);
     }
diff --git a/keyboards/lets_split/rules.mk b/keyboards/lets_split/rules.mk
index 6961fbd556..6fde8a444c 100644
--- a/keyboards/lets_split/rules.mk
+++ b/keyboards/lets_split/rules.mk
@@ -52,7 +52,7 @@ OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
 OPT_DEFS += -DBOOTLOADER_SIZE=4096
 
 # Build Options
-#   change to "no" to disable the options, or define them in the Makefile in 
+#   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)
@@ -71,4 +71,4 @@ RGBLIGHT_ENABLE ?= no        # Enable WS2812 RGB underlight.  Do not enable this
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
 SLEEP_LED_ENABLE ?= no    # Breathing sleep LED during USB suspend
 
-CUSTOM_MATRIX = yes
\ No newline at end of file
+CUSTOM_MATRIX = yes
diff --git a/keyboards/lets_split/serial.c b/keyboards/lets_split/serial.c
index f439c2f20b..6faed09ce0 100644
--- a/keyboards/lets_split/serial.c
+++ b/keyboards/lets_split/serial.c
@@ -10,9 +10,10 @@
 #include <avr/interrupt.h>
 #include <util/delay.h>
 #include <stdbool.h>
-
 #include "serial.h"
 
+#ifdef USE_SERIAL
+
 // Serial pulse period in microseconds. Its probably a bad idea to lower this
 // value.
 #define SERIAL_DELAY 24
@@ -223,3 +224,5 @@ int serial_update_buffers(void) {
   sei();
   return 0;
 }
+
+#endif
diff --git a/keyboards/lets_split/split_util.c b/keyboards/lets_split/split_util.c
index 65003a71a4..461921798f 100644
--- a/keyboards/lets_split/split_util.c
+++ b/keyboards/lets_split/split_util.c
@@ -6,11 +6,15 @@
 #include <avr/eeprom.h>
 #include "split_util.h"
 #include "matrix.h"
-#include "i2c.h"
-#include "serial.h"
 #include "keyboard.h"
 #include "config.h"
 
+#ifdef USE_I2C
+#  include "i2c.h"
+#else
+#  include "serial.h"
+#endif
+
 volatile bool isLeftHand = true;
 
 static void setup_handedness(void) {
diff --git a/keyboards/planck/keymaps/impossible/Makefile b/keyboards/planck/keymaps/impossible/Makefile
new file mode 100644
index 0000000000..581e08cd02
--- /dev/null
+++ b/keyboards/planck/keymaps/impossible/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 = 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 = yes      # Enable keyboard backlight functionality
+MIDI_ENABLE = no            # MIDI controls
+AUDIO_ENABLE = yes           # 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.
+
+# 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/planck/keymaps/impossible/keymap.c b/keyboards/planck/keymaps/impossible/keymap.c
new file mode 100644
index 0000000000..503976fa28
--- /dev/null
+++ b/keyboards/planck/keymaps/impossible/keymap.c
@@ -0,0 +1,242 @@
+// 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 "planck.h"
+#include "action_layer.h"
+#ifdef AUDIO_ENABLE
+  #include "audio.h"
+#endif
+#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 _WORKMAN 0
+#define _FN 1
+#define _QWERTY 2
+#define _QW_FN 3
+#define _PLOVER 4
+#define _ADJ 5
+
+enum planck_keycodes {
+  WORKMAN = SAFE_RANGE,
+  QWERTY,
+  PLOVER
+};
+
+// Fillers to make layering more clear
+#define _______ KC_TRNS
+#define XXXXXXX KC_NO
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+/* Workman Alpha-numeric
+ * ,-----------------------------------------------------------------------------------------------.
+ * |   Q   |   D   |   R   |   W   |   B   |   F   |   U   |   P   |   J   |   7   |   8   |   9   |
+ * |-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------|
+ * |   A   |   S   |   H   |   T   |   G   |   N   |   E   |   O   |   I   |   4   |   5   |   6   |
+ * |-------+-------+-------+-------+-------+-------|-------+-------+-------+-------+-------+-------|
+ * |   Z   |   X   |   M   |   C   |   V   |   L   |   Y   |   K   |   Up  |   1   |   2   |   3   |
+ * |-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------|
+ * |Alt/Tab|Gui/Esc|   ,   |CTL/Bsp| Fn/Ent|SFT/SPC|   .   |  Left |  Down | Right |   0   |Adj/Ent|
+ * `-----------------------------------------------------------------------------------------------'
+ */
+
+[_WORKMAN] = {
+  {KC_Q,          KC_D,          KC_R,    KC_W,           KC_B,            KC_F,          KC_U,   KC_P,    KC_J,    KC_KP_7, KC_KP_8, KC_KP_9},
+  {KC_A,          KC_S,          KC_H,    KC_T,           KC_G,            KC_N,          KC_E,   KC_O,    KC_I,    KC_KP_4, KC_KP_5, KC_KP_6},
+  {KC_Z,          KC_X,          KC_M,    KC_C,           KC_V,            KC_L,          KC_Y,   KC_K,    KC_UP,   KC_KP_1, KC_KP_2, KC_KP_3},
+  {ALT_T(KC_TAB), GUI_T(KC_ESC), KC_COMM, CTL_T(KC_BSPC), LT(_FN, KC_ENT), SFT_T(KC_SPC), KC_DOT, KC_LEFT, KC_DOWN, KC_RGHT, KC_KP_0, LT(_ADJ, KC_ENT)}
+},
+
+/* FN-key held (Workman)
+ * ,-----------------------------------------------------------------------------------------------.
+ * |   !   |   @   |   #   |   $   |   %   |   ^   |   &   |   *   |  F12  |   F7  |   F8  |   F9  |
+ * |-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------|
+ * |  Tab  |   [   |   ]   |   -   |  Del  |   '   |   (   |   )   |  F11  |   F4  |   F5  |   F6  |
+ * |-------+-------+-------+-------+-------+-------|-------+-------+-------+-------+-------+-------|
+ * |  Menu |       |       |   =   |   \   |   /   |       |       |  PgUp |   F1  |   F2  |   F3  |
+ * |-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------|
+ * |Alt/Tab|  Gui  |   ~   |CTL/Bsp| Fn/Ent|SFT/Spc|   ;   |  Home |  PgDn |  End  |  F10  |Adj/Ent|
+ * `-----------------------------------------------------------------------------------------------'
+ */
+
+[_FN] = {
+  {KC_EXLM, KC_AT,       KC_HASH,     KC_DLR,   KC_PERC,   KC_CIRC, KC_AMPR,   KC_ASTR, KC_F12,  KC_F7,  KC_F8,  KC_F9},
+  {KC_TAB,  KC_LBRACKET, KC_RBRACKET, KC_MINUS, KC_DELETE, KC_QUOT, KC_LPRN,   KC_RPRN, KC_F11,  KC_F4,  KC_F5,  KC_F6},
+  {KC_MENU, _______,     _______,     KC_EQUAL, KC_BSLS,   KC_SLSH, XXXXXXX,   XXXXXXX, KC_PGUP, KC_F1,  KC_F2,  KC_F3},
+  {_______, KC_LGUI,     KC_GRAVE,    _______,  _______,   _______, KC_SCOLON, KC_HOME, KC_PGDN, KC_END, KC_F10, _______}
+},
+
+/* Qwerty
+ * ,-----------------------------------------------------------------------------------------------.
+ * |Gui/Esc|   1   |   2   |   3   |   4   |   5   |   6   |   7   |   8   |   9   |   0   | Bksp  |
+ * |-------+-------+-------+-------+-------+---------------+-------+-------+-------+-------+-------|
+ * | Ctrl  |   Q   |   W   |   E   |   R   |   T   |   Y   |   U   |   I   |   O   |   P   |   /   |
+ * |-------+-------+-------+-------+-------+---------------+-------+-------+-------+-------+-------|
+ * | Shift |   A   |   S   |   D   |   F   |   G   |   H   |   J   |   K   |   L   |   ;   |   "   |
+ * |-------+-------+-------+-------+-------+-------|-------+-------+-------+-------+-------+-------|
+ * |Alt/Tab|   Z   |   X   |   C   |   V   | Fn/SPC|   B   |   N   |   M   |   ,   |   .   |Adj/Ent|
+ * `-----------------------------------------------------------------------------------------------'
+ */
+
+[_QWERTY] = {
+  {GUI_T(KC_ESC), KC_1, KC_2, KC_3, KC_4, KC_5,               KC_6, KC_7, KC_8, KC_9,    KC_0,    KC_BSPC},
+  {KC_LCTL,       KC_Q, KC_W, KC_E, KC_R, KC_T,               KC_Y, KC_U, KC_I, KC_O,    KC_P,    KC_ENT},
+  {KC_LSFT,       KC_A, KC_S, KC_D, KC_F, KC_G,               KC_H, KC_J, KC_K, KC_L,    KC_SCLN, KC_QUOT},
+  {ALT_T(KC_TAB), KC_Z, KC_X, KC_C, KC_V, LT(_QW_FN, KC_SPC), KC_B, KC_N, KC_M, KC_COMM, KC_DOT,  LT(_ADJ, KC_ENT)},
+},
+
+/* FN-key held (Qwerty)
+ * ,-----------------------------------------------------------------------------------------------.
+ * |  Gui  |   F1  |   F2  |   F3  |   F4  |   F5  |   F6  |   F7  |   F8  |   F9  |  F10  |  F11  |
+ * |-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------|
+ * |  Ctrl |   ~   |   [   |  PgUp |   ]   |       |       |   -   |   Up  |   =   |       |  F12  |
+ * |-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------|
+ * | Shift |  Tab  |  Home |  PgDn |  End  |  Del  |       |  Left |  Down | Right |       |       |
+ * |-------+-------+-------+-------+-------+-------|-------+-------+-------+-------+-------+-------|
+ * |Alt/Tab|       |       |       |       | Fn/Spc|       |       |       |       |  Menu |Adj/Ent|
+ * `-----------------------------------------------------------------------------------------------'
+ */
+
+[_QW_FN] = {
+  {KC_LGUI, KC_F1,    KC_F2,   KC_F3,   KC_F4,   KC_F5,     KC_F6,   KC_F7,   KC_F8,   KC_F9,    KC_F10,  KC_F11},
+  {_______, KC_GRAVE, KC_LBRC, KC_PGUP, KC_RBRC, XXXXXXX,   XXXXXXX, KC_MINS, KC_UP,   KC_EQUAL, XXXXXXX, KC_F12},
+  {_______, KC_TAB,   KC_HOME, KC_PGDN, KC_END,  KC_DELETE, XXXXXXX, KC_LEFT, KC_DOWN, KC_RIGHT, XXXXXXX, XXXXXXX},
+  {_______, XXXXXXX,  XXXXXXX, XXXXXXX, XXXXXXX, _______,   XXXXXXX, _______, _______, _______,  KC_MENU, _______}
+},
+
+/* Plover layer (http://opensteno.org)
+ * ,-----------------------------------------------------------------------------------------------.
+ * |   S   |   T   |   P   |   H   |   *   |   F   |   P   |   L   |   T   |   D   |       |       |
+ * |-------+-------+-------+-------+-------+-------|-------+-------+-------+-------+-------+-------|
+ * |   S   |   K   |   W   |   R   |   *   |   R   |   B   |   G   |   S   |   Z   |       |       |
+ * |-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------|
+ * |   #   |   #   |   #   |   #   |       |   #   |   #   |   #   |   #   |   #   |       |       |
+ * |-------+-------+-------+-------+-------+---------------+-------+-------+-------+-------+-------|
+ * |       |       |   A   |   O   |       |   E   |   U   |       |       |       |       |Adj/Ent|
+ * `-----------------------------------------------------------------------------------------------'
+ */
+
+[_PLOVER] = {
+  {KC_Q,    KC_W,    KC_E, KC_R, KC_T,    KC_U, KC_I, KC_O,    KC_P,    KC_LBRC, XXXXXXX, XXXXXXX},
+  {KC_A,    KC_S,    KC_D, KC_F, KC_G,    KC_J, KC_K, KC_L,    KC_SCLN, KC_QUOT, XXXXXXX, XXXXXXX},
+  {KC_1,    KC_1,    KC_1, KC_1, XXXXXXX, KC_1, KC_1, KC_1,    KC_1,    KC_1,    XXXXXXX, XXXXXXX},
+  {XXXXXXX, XXXXXXX, KC_C, KC_V, XXXXXXX, KC_N, KC_M, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, LT(_ADJ, KC_ENT)}
+},
+
+/* Adjust
+ * ,-----------------------------------------------------------------------------------------------.
+ * |       |       |       |       |       |       |       |       | Insert| PrtSc | Pause | RESET |
+ * |-------+-------+-------+-------+-------+---------------+-------+-------+-------+-------+-------|
+ * |       |       |       |       |       |       |       | CapLk |Voice +| Audio |MIDIoff|       |
+ * |-------+-------+-------+-------+-------+-------|-------+-------+-------+-------+-------+-------|
+ * |       |       |       |       |       |       |       | ScrLk |Voice -| Music |MIDI on|       |
+ * |-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------|
+ * |       |       |       |       |       |       |       | Numlk |Workman| Qwerty| Plover|Adj/Ent|
+ * `-----------------------------------------------------------------------------------------------'
+ */
+
+[_ADJ] = {
+  {_______, _______, _______, _______, _______, _______, _______, _______, KC_INS,  KC_PSCR, KC_PAUSE, RESET},
+  {_______, _______, _______, _______, _______, _______, _______, KC_CLCK, MUV_IN,  AU_TOG,  MI_OFF,   _______},
+  {_______, _______, _______, _______, _______, _______, _______, KC_SLCK, MUV_DE,  MU_TOG,  MI_ON,    _______},
+  {_______, _______, _______, _______, _______, _______, _______, KC_NLCK, WORKMAN, QWERTY,  PLOVER,   _______}
+}
+
+};
+
+#ifdef AUDIO_ENABLE
+
+float tone_startup[][2]    = SONG(STARTUP_SOUND);
+float tone_goodbye[][2]    = SONG(GOODBYE_SOUND);
+
+float tone_workman[][2]    = SONG(QWERTY_SOUND);
+float tone_qwerty[][2]     = SONG(COLEMAK_SOUND);
+float tone_plover[][2]     = SONG(PLOVER_SOUND);
+
+float music_scale[][2]     = SONG(MUSIC_SCALE_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 WORKMAN:
+      if (record->event.pressed) {
+        #ifdef AUDIO_ENABLE
+          PLAY_NOTE_ARRAY(tone_workman, false, 0);
+        #endif
+        persistant_default_layer_set(1UL<<_WORKMAN);
+      }
+      return false;
+      break;
+    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 PLOVER:
+      if (record->event.pressed) {
+        #ifdef AUDIO_ENABLE
+          PLAY_NOTE_ARRAY(tone_plover, false, 0);
+        #endif
+        if (!eeconfig_is_enabled()) {
+          eeconfig_init();
+        }
+        keymap_config.raw = eeconfig_read_keymap();
+        keymap_config.nkro = 1;
+        eeconfig_update_keymap(keymap_config.raw);
+        persistant_default_layer_set(1UL<<_PLOVER);
+      }
+      return false;
+      break;
+  }
+  return true;
+}
+
+void matrix_init_user(void) {
+    #ifdef AUDIO_ENABLE
+        startup_user();
+    #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
diff --git a/keyboards/planck/keymaps/impossible/readme.md b/keyboards/planck/keymaps/impossible/readme.md
new file mode 100644
index 0000000000..02c719197e
--- /dev/null
+++ b/keyboards/planck/keymaps/impossible/readme.md
@@ -0,0 +1,73 @@
+# The Impossible Layout
+
+The Impossible Layout is named such because it manages to fit in both a numpad and an inverted-T arrow cluster into the same layer as the alpha keys.
+
+## Main layout
+
+The Impossible Layout places the middle column of the alphas onto where the punctuation keys were, moving he most used punctuation to be accessed by the thumbs. Because removing the middle columns fits with the Workman layout's philosopy, Workman is used as the basis for the layout. This means the layout should be very easy to learn for Workman users, and reasonable for Colemak users. Other space gains are made by combining keys that are only ever chorded with other non symbol keys (with function-layer alternatives where needed).
+
+### Alpha-numeric layer
+
+|       |       |       |       |       |       |       |       |       |       |       |       |
+|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|
+|   Q   |   D   |   R   |   W   |   B   |   F   |   U   |   P   |   J   |   7   |   8   |   9   |
+|   A   |   S   |   H   |   T   |   G   |   N   |   E   |   O   |   I   |   4   |   5   |   6   |
+|   Z   |   X   |   M   |   C   |   V   |   L   |   Y   |   K   |   Up  |   1   |   2   |   3   |
+|Alt/Tab|Gui/Esc|   ,   |CTL/Bsp| Fn/Ent|SFT/SPC|   .   |  Left |  Down | Right |   0   |Adj/Ent|
+
+### Function layer
+
+|       |       |       |       |       |       |       |       |       |       |       |       |
+|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|
+|   !   |   @   |   #   |   $   |   %   |   ^   |   &   |   *   |  F12  |   F7  |   F8  |   F9  |
+|  Tab  |   [   |   ]   |   -   |  Del  |   '   |   (   |   )   |  F11  |   F4  |   F5  |   F6  |
+|  Menu |       |       |   =   |   \   |   /   |       |       |  PgUp |   F1  |   F2  |   F3  |
+|Alt/Tab|  Gui  |   ~   |CTL/Bsp| Fn/Ent|SFT/Spc|   ;   |  Home |  PgDn |  End  |  F10  |Adj/Ent|
+
+## Qwerty
+
+The Qwerty layer, mostly intended for gaming use, makes use of the doubled chorded/non-symbolic keys to obtain use of the entire alpha-numeric typing area.
+
+### Qwerty layer
+
+|       |       |       |       |       |       |       |       |       |       |       |       |
+|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|
+|Gui/Esc|   1   |   2   |   3   |   4   |   5   |   6   |   7   |   8   |   9   |   0   | Bksp  |
+| Ctrl  |   Q   |   W   |   E   |   R   |   T   |   Y   |   U   |   I   |   O   |   P   |   /   |
+| Shift |   A   |   S   |   D   |   F   |   G   |   H   |   J   |   K   |   L   |   ;   |   "   |
+|Alt/Tab|   Z   |   X   |   C   |   V   | Fn/SPC|   B   |   N   |   M   |   ,   |   .   |Adj/Ent|
+
+### Qwerty Fn Layer
+
+|       |       |       |       |       |       |       |       |       |       |       |       |
+|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|
+|  Gui  |   F1  |   F2  |   F3  |   F4  |   F5  |   F6  |   F7  |   F8  |   F9  |  F10  |  F11  |
+|  Ctrl |   ~   |   [   |  PgUp |   ]   |       |       |   -   |   Up  |   =   |       |  F12  |
+| Shift |  Tab  |  Home |  PgDn |  End  |  Del  |       |  Left |  Down | Right |       |       |
+|Alt/Tab|       |       |       |       | Fn/Spc|       |       |       |       |  Menu |Adj/Ent|
+
+## Stenography
+
+The Steno/Plover layer moves the number row below the regular keys, providing a much more comfortable placement for the thumb keys. Using this layout will require a slightly different dictionary to account for different keys being adjacent to the number row.
+
+### Steno Layer
+
+|       |       |       |       |       |       |       |       |       |       |       |       |
+|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|
+|   S   |   T   |   P   |   H   |   *   |   F   |   P   |   L   |   T   |   D   |       |       |
+|   S   |   K   |   W   |   R   |   *   |   R   |   B   |   G   |   S   |   Z   |       |       |
+|   #   |   #   |   #   |   #   |       |   #   |   #   |   #   |   #   |   #   |       |       |
+|       |       |   A   |   O   |       |   E   |   U   |       |       |       |       |Adj/Ent|
+
+## Adjustments and Options
+
+In order to switch between layouts and change other keyboard settings, an adjustment layer is accessible from the same position over any layout.
+
+### Adjustment Layer
+
+|       |       |       |       |       |       |       |       |       |       |       |       |
+|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|
+|       |       |       |       |       |       |       |       | Insert| PrtSc | Pause | RESET |
+|       |       |       |       |       |       |       | CapLk |Voice +| Audio |MIDIoff|       |
+|       |       |       |       |       |       |       | ScrLk |Voice -| Music |MIDI on|       |
+|       |       |       |       |       |       |       | Numlk |Workman| Qwerty| Plover|Adj/Ent|
diff --git a/quantum/process_keycode/process_tap_dance.c b/quantum/process_keycode/process_tap_dance.c
index 79ade4d000..6ae362c4c2 100644
--- a/quantum/process_keycode/process_tap_dance.c
+++ b/quantum/process_keycode/process_tap_dance.c
@@ -70,6 +70,7 @@ bool process_tap_dance(uint16_t keycode, keyrecord_t *record) {
       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];
diff --git a/quantum/process_keycode/process_tap_dance.h b/quantum/process_keycode/process_tap_dance.h
index d7b857bdc6..f753cbba66 100644
--- a/quantum/process_keycode/process_tap_dance.h
+++ b/quantum/process_keycode/process_tap_dance.h
@@ -39,15 +39,17 @@ typedef struct
 
 #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 })  \
+    .user_data = (void *)&((qk_tap_dance_pair_t) { kc1, kc2 }),  \
   }
 
 #define ACTION_TAP_DANCE_FN(user_fn) {  \
-    .fn = { NULL, user_fn, NULL } \
+    .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_reset) { \
-    .fn = { user_fn_on_each_tap, user_fn_on_dance_finished, user_fn_on_reset } \
+#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[];
diff --git a/readme.md b/readme.md
index ea20b5e017..a7320202b2 100644
--- a/readme.md
+++ b/readme.md
@@ -526,7 +526,7 @@ This array specifies what actions shall be taken when a tap-dance key is in acti
 
 * `ACTION_TAP_DANCE_DOUBLE(kc1, kc2)`: Sends the `kc1` keycode when tapped once, `kc2` otherwise. When the key is held, the appropriate keycode is registered: `kc1` when pressed and held, `kc2` when tapped once, then pressed and held.
 * `ACTION_TAP_DANCE_FN(fn)`: Calls the specified function - defined in the user keymap - with the final tap count of the tap dance action.
-* `ACTION_TAP_DANCE_FN_ADVANCED(on_each_tap_fn, on_dance_finished_fn, on_reset_fn)`: Calls the first specified function - defined in the user keymap - on every tap, the second function on when the dance action finishes (like the previous option), and the last function when the tap dance action resets.
+* `ACTION_TAP_DANCE_FN_ADVANCED(on_each_tap_fn, on_dance_finished_fn, on_dance_reset_fn)`: Calls the first specified function - defined in the user keymap - on every tap, the second function on when the dance action finishes (like the previous option), and the last function when the tap dance action resets.
 
 The first option is enough for a lot of cases, that just want dual roles. For example, `ACTION_TAP_DANCE(KC_SPC, KC_ENT)` will result in `Space` being sent on single-tap, `Enter` otherwise.