diff --git a/Makefile b/Makefile
index 693edc9f..331badcf 100644
--- a/Makefile
+++ b/Makefile
@@ -190,6 +190,10 @@ ifeq ($(strip $(MIDI_ENABLE)), yes)
 	SRC += $(QUANTUM_DIR)/process_keycode/process_midi.c
 endif
 
+ifeq ($(strip $(VIRTSER_ENABLE)), yes)
+    OPT_DEFS += -DVIRTSER_ENABLE
+endif
+
 ifeq ($(strip $(AUDIO_ENABLE)), yes)
     OPT_DEFS += -DAUDIO_ENABLE
 	SRC += $(QUANTUM_DIR)/process_keycode/process_music.c
diff --git a/doc/keymap.md b/doc/keymap.md
index d1985e56..6f2a663f 100644
--- a/doc/keymap.md
+++ b/doc/keymap.md
@@ -455,6 +455,35 @@ Turn the backlight on and off without changing level.
 
 
 
+### 2.6 Swap-Hands Action
+The swap-hands action allows support for one-handed keyboards without requiring a separate layer. Set `ONEHAND_ENABLE` in the Makefile and define a `hand_swap_config` entry in your keymap. Now whenever the `ACTION_SWAP_HANDS` command key is pressed the keyboard is mirrored. For instance, to type "Hello, World" on QWERTY you would type `^Ge^s^s^w^c W^wr^sd`
+
+### 2.6.1 Configuration
+The configuration table is a simple 2-dimensional array to map from column/row to new column/row. Example `hand_swap_config` for Planck:
+
+```
+const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+  {{11, 0}, {10, 0}, {9, 0}, {8, 0}, {7, 0}, {6, 0}, {5, 0}, {4, 0}, {3, 0}, {2, 0}, {1, 0}, {0, 0}},
+  {{11, 1}, {10, 1}, {9, 1}, {8, 1}, {7, 1}, {6, 1}, {5, 1}, {4, 1}, {3, 1}, {2, 1}, {1, 1}, {0, 1}},
+  {{11, 2}, {10, 2}, {9, 2}, {8, 2}, {7, 2}, {6, 2}, {5, 2}, {4, 2}, {3, 2}, {2, 2}, {1, 2}, {0, 2}},
+  {{11, 3}, {10, 3}, {9, 3}, {8, 3}, {7, 3}, {6, 3}, {5, 3}, {4, 3}, {3, 3}, {2, 3}, {1, 3}, {0, 3}},
+};
+```
+
+Note that the array indices are reversed same as the matrix and the values are of type `keypos_t` which is `{col, row}` and all values are zero-based. In the example above, `hand_swap_config[2][4]` (third row, fifth column) would return {7, 2} (third row, eighth column).
+
+### 2.6.2 Advanced Swap Commands
+- **`ACTION_SWAP_HANDS()`** Swaps hands when pressed, returns to normal when released (momentary).
+- **`ACTION_SWAP_HANDS_TOGGLE()`** Toggles swap on and off with every keypress.
+- **`ACTION_SWAP_HANDS_TAP_TOGGLE()`** Toggles with a tap; momentary when held.
+- **`ACTION_SWAP_HANDS_TAP_KEY(key)`** Sends `key` with a tap; momentary swap when held.
+- **`ACTION_SWAP_HANDS_ON_OFF()`** Alias for `ACTION_SWAP_HANDS()`
+- **`ACTION_SWAP_HANDS_OFF_ON()`** Momentarily turns off swap.
+- **`ACTION_SWAP_HANDS_ON()`** Turns on swapping and leaves it on.
+- **`ACTION_SWAP_HANDS_OFF()`** Turn off swapping and leaves it off. Good for returning to a known state.
+
+
+
 ## 3. Layer switching Example
 There are some ways to switch layer with 'Layer' actions.
 
diff --git a/keyboards/ergodox/ez/keymaps/steno/Makefile b/keyboards/ergodox/ez/keymaps/steno/Makefile
new file mode 100644
index 00000000..b6fb9b1a
--- /dev/null
+++ b/keyboards/ergodox/ez/keymaps/steno/Makefile
@@ -0,0 +1,3 @@
+VIRTSER_ENABLE = yes
+# Not enough interupts, so something has to go
+MOUSEKEY_ENABLE = no
diff --git a/keyboards/ergodox/ez/keymaps/steno/keymap.c b/keyboards/ergodox/ez/keymaps/steno/keymap.c
new file mode 100644
index 00000000..3e983090
--- /dev/null
+++ b/keyboards/ergodox/ez/keymaps/steno/keymap.c
@@ -0,0 +1,324 @@
+#include "ergodox.h"
+#include "debug.h"
+#include "action_layer.h"
+#include "sendchar.h"
+#include "virtser.h"
+
+#define BASE 0 // default layer
+#define SYMB 1 // symbols
+#define MDIA 2 // media keys
+#define TXBOLT 3 // TxBolt Steno Virtual Serial
+#define TXBOLT2 4 // TxBolt Steno Virtual Serial Alternative Layout
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+/* Keymap 0: Basic layer
+ *
+ * ,--------------------------------------------------.           ,--------------------------------------------------.
+ * |   =    |   1  |   2  |   3  |   4  |   5  | LEFT |           | RIGHT|   6  |   7  |   8  |   9  |   0  |   -    |
+ * |--------+------+------+------+------+-------------|           |------+------+------+------+------+------+--------|
+ * | Del    |   Q  |   W  |   E  |   R  |   T  |  L1  |           |  TX  |   Y  |   U  |   I  |   O  |   P  |   \    |
+ * |--------+------+------+------+------+------|      |           | BOLT |------+------+------+------+------+--------|
+ * | BkSp   |   A  |   S  |   D  |   F  |   G  |------|           |------|   H  |   J  |   K  |   L  |; / L2|' / Cmd |
+ * |--------+------+------+------+------+------| Hyper|           | Meh  |------+------+------+------+------+--------|
+ * | LShift |Z/Ctrl|   X  |   C  |   V  |   B  |      |           |      |   N  |   M  |   ,  |   .  |//Ctrl| RShift |
+ * `--------+------+------+------+------+-------------'           `-------------+------+------+------+------+--------'
+ *   |Grv/L1|  '"  |AltShf| Left | Right|                                       |  Up  | Down |   [  |   ]  | ~L1  |
+ *   `----------------------------------'                                       `----------------------------------'
+ *                                        ,-------------.       ,-------------.
+ *                                        | App  | LGui |       | Alt  |Ctrl/Esc|
+ *                                 ,------|------|------|       |------+--------+------.
+ *                                 |      |      | Home |       | PgUp |        |      |
+ *                                 | Space|Backsp|------|       |------|  Tab   |Enter |
+ *                                 |      |ace   | End  |       | PgDn |        |      |
+ *                                 `--------------------'       `----------------------'
+ */
+// If it accepts an argument (i.e, is a function), it doesn't need KC_.
+// Otherwise, it needs KC_*
+[BASE] = KEYMAP(  // layer 0 : default
+        // left hand
+        KC_EQL,         KC_1,         KC_2,   KC_3,   KC_4,   KC_5,   KC_LEFT,
+        KC_DELT,        KC_Q,         KC_W,   KC_E,   KC_R,   KC_T,   TG(SYMB),
+        KC_BSPC,        KC_A,         KC_S,   KC_D,   KC_F,   KC_G,
+        KC_LSFT,        CTL_T(KC_Z),  KC_X,   KC_C,   KC_V,   KC_B,   ALL_T(KC_NO),
+        LT(SYMB,KC_GRV),KC_QUOT,      LALT(KC_LSFT),  KC_LEFT,KC_RGHT,
+                                              ALT_T(KC_APP),  KC_LGUI,
+                                                              KC_HOME,
+                                               KC_SPC,KC_BSPC,KC_END,
+        // right hand
+             KC_RGHT,     KC_6,   KC_7,   KC_8,   KC_9,   KC_0,             KC_MINS,
+             TG(TXBOLT),  KC_Y,   KC_U,   KC_I,   KC_O,   KC_P,             KC_BSLS,
+                          KC_H,   KC_J,   KC_K,   KC_L,   LT(MDIA, KC_SCLN),GUI_T(KC_QUOT),
+             MEH_T(KC_NO),KC_N,   KC_M,   KC_COMM,KC_DOT, CTL_T(KC_SLSH),   KC_RSFT,
+                                  KC_UP,  KC_DOWN,KC_LBRC,KC_RBRC,          KC_FN1,
+             KC_LALT,        CTL_T(KC_ESC),
+             KC_PGUP,
+             KC_PGDN,KC_TAB, KC_ENT
+    ),
+/* Keymap 1: Symbol Layer
+ *
+ * ,--------------------------------------------------.           ,--------------------------------------------------.
+ * |Version |  F1  |  F2  |  F3  |  F4  |  F5  |      |           |      |  F6  |  F7  |  F8  |  F9  |  F10 |   F11  |
+ * |--------+------+------+------+------+-------------|           |------+------+------+------+------+------+--------|
+ * |        |   !  |   @  |   {  |   }  |   |  |      |           |      |   Up |   7  |   8  |   9  |   *  |   F12  |
+ * |--------+------+------+------+------+------|      |           |      |------+------+------+------+------+--------|
+ * |        |   #  |   $  |   (  |   )  |   `  |------|           |------| Down |   4  |   5  |   6  |   +  |        |
+ * |--------+------+------+------+------+------|      |           |      |------+------+------+------+------+--------|
+ * |        |   %  |   ^  |   [  |   ]  |   ~  |      |           |      |   &  |   1  |   2  |   3  |   \  |        |
+ * `--------+------+------+------+------+-------------'           `-------------+------+------+------+------+--------'
+ *   |      |      |      |      |      |                                       |      |    . |   0  |   =  |      |
+ *   `----------------------------------'                                       `----------------------------------'
+ *                                        ,-------------.       ,-------------.
+ *                                        |      |      |       |      |      |
+ *                                 ,------|------|------|       |------+------+------.
+ *                                 |      |      |      |       |      |      |      |
+ *                                 |      |      |------|       |------|      |      |
+ *                                 |      |      |      |       |      |      |      |
+ *                                 `--------------------'       `--------------------'
+ */
+// SYMBOLS
+[SYMB] = KEYMAP(
+       // left hand
+       M(0),   KC_F1,  KC_F2,  KC_F3,  KC_F4,  KC_F5,  KC_TRNS,
+       KC_TRNS,KC_EXLM,KC_AT,  KC_LCBR,KC_RCBR,KC_PIPE,KC_TRNS,
+       KC_TRNS,KC_HASH,KC_DLR, KC_LPRN,KC_RPRN,KC_GRV,
+       KC_TRNS,KC_PERC,KC_CIRC,KC_LBRC,KC_RBRC,KC_TILD,KC_TRNS,
+       KC_TRNS,KC_TRNS,KC_TRNS,KC_TRNS,KC_TRNS,
+                                       KC_TRNS,KC_TRNS,
+                                               KC_TRNS,
+                               KC_TRNS,KC_TRNS,KC_TRNS,
+       // right hand
+       KC_TRNS, KC_F6,   KC_F7,  KC_F8,   KC_F9,   KC_F10,  KC_F11,
+       KC_TRNS, KC_UP,   KC_7,   KC_8,    KC_9,    KC_ASTR, KC_F12,
+                KC_DOWN, KC_4,   KC_5,    KC_6,    KC_PLUS, KC_TRNS,
+       KC_TRNS, KC_AMPR, KC_1,   KC_2,    KC_3,    KC_BSLS, KC_TRNS,
+                         KC_TRNS,KC_DOT,  KC_0,    KC_EQL,  KC_TRNS,
+       KC_TRNS, KC_TRNS,
+       KC_TRNS,
+       KC_TRNS, KC_TRNS, KC_TRNS
+),
+/* Keymap 2: Media and mouse keys
+ *
+ * ,--------------------------------------------------.           ,--------------------------------------------------.
+ * | RESET  |      |      |      |      |      |      |           |      |      |      |      |      |      |        |
+ * |--------+------+------+------+------+-------------|           |------+------+------+------+------+------+--------|
+ * |        |      |      | MsUp |      |      |      |           |      |      |      |      |      |      |        |
+ * |--------+------+------+------+------+------|      |           |      |------+------+------+------+------+--------|
+ * |        |      |MsLeft|MsDown|MsRght|      |------|           |------|      |      |      |      |      |  Play  |
+ * |--------+------+------+------+------+------|      |           |      |------+------+------+------+------+--------|
+ * |        |      |      |      |      |      |      |           |      |      |      | Prev | Next |      |        |
+ * `--------+------+------+------+------+-------------'           `-------------+------+------+------+------+--------'
+ *   |      |      |      | Lclk | Rclk |                                       |VolUp |VolDn | Mute |      |      |
+ *   `----------------------------------'                                       `----------------------------------'
+ *                                        ,-------------.       ,-------------.
+ *                                        |      |      |       |      |      |
+ *                                 ,------|------|------|       |------+------+------.
+ *                                 |      |      |      |       |      |      |Brwser|
+ *                                 |      |      |------|       |------|      |Back  |
+ *                                 |      |      |      |       |      |      |      |
+ *                                 `--------------------'       `--------------------'
+ */
+// MEDIA AND MOUSE
+[MDIA] = KEYMAP(
+       RESET,   KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+       KC_TRNS, KC_TRNS, KC_TRNS, KC_MS_U, KC_TRNS, KC_TRNS, KC_TRNS,
+       KC_TRNS, KC_TRNS, KC_MS_L, KC_MS_D, KC_MS_R, KC_TRNS,
+       KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+       KC_TRNS, KC_TRNS, KC_TRNS, KC_BTN1, KC_BTN2,
+                                           KC_TRNS, KC_TRNS,
+                                                    KC_TRNS,
+                                  KC_TRNS, KC_TRNS, KC_TRNS,
+    // right hand
+       KC_TRNS,  KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+       KC_TRNS,  KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+                 KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_MPLY,
+       KC_TRNS,  KC_TRNS, KC_TRNS, KC_MPRV, KC_MNXT, KC_TRNS, KC_TRNS,
+                          KC_VOLU, KC_VOLD, KC_MUTE, KC_TRNS, KC_TRNS,
+       KC_TRNS, KC_TRNS,
+       KC_TRNS,
+       KC_TRNS, KC_TRNS, KC_WBAK
+),
+// TxBolt Codes
+#define Sl 0b00000001
+#define Tl 0b00000010
+#define Kl 0b00000100
+#define Pl 0b00001000
+#define Wl 0b00010000
+#define Hl 0b00100000
+#define Rl 0b01000001
+#define Al 0b01000010
+#define Ol 0b01000100
+#define X  0b01001000
+#define Er 0b01010000
+#define Ur 0b01100000
+#define Fr 0b10000001
+#define Rr 0b10000010
+#define Pr 0b10000100
+#define Br 0b10001000
+#define Lr 0b10010000
+#define Gr 0b10100000
+#define Tr 0b11000001
+#define Sr 0b11000010
+#define Dr 0b11000100
+#define Zr 0b11001000
+#define NM 0b11010000
+#define GRPMASK 0b11000000
+#define GRP0 0b00000000
+#define GRP1 0b01000000
+#define GRP2 0b10000000
+#define GRP3 0b11000000
+/* Keymap 3: TxBolt (Serial)
+ *
+ * ,--------------------------------------------------.           ,--------------------------------------------------.
+ * | BKSPC  |      |      |      |      |      |      |           |      |      |      |      |      |      |        |
+ * |--------+------+------+------+------+-------------|           |------+------+------+------+------+------+--------|
+ * |        |   #  |   #  |   #  |   #  |   #  |      |           |      |   #  |   #  |   #  |   #  |   #  |   #    |
+ * |--------+------+------+------+------+------|      |           |      |------+------+------+------+------+--------|
+ * |        |   S  |   T  |   P  |   H  |   *  |------|           |------|   *  |   F  |   P  |   L  |   T  |   D    |
+ * |--------+------+------+------+------+------|      |           |      |------+------+------+------+------+--------|
+ * |        |   S  |   K  |   W  |   R  |   *  |      |           |      |   *  |   R  |   B  |   G  |   S  |   Z    |
+ * `--------+------+------+------+------+-------------'           `-------------+------+------+------+------+--------'
+ *   |      |      |      |      |      |                                       |      |      |      |      |      |
+ *   `----------------------------------'                                       `----------------------------------'
+ *                                        ,-------------.       ,-------------.
+ *                                        |      |      |       |      |      |
+ *                                 ,------|------|------|       |------+------+------.
+ *                                 |      |      |      |       |      |      |      |
+ *                                 |   A  |   O  |------|       |------|   E  |   U  |
+ *                                 |      |      |      |       |      |      |      |
+ *                                 `--------------------'       `--------------------'
+ */
+// TxBolt over Serial
+[TXBOLT] = KEYMAP(
+       KC_BSPC, KC_NO,   KC_NO,   KC_NO,   KC_NO,   KC_NO,   KC_NO,  
+       KC_NO,   M(NM),   M(NM),   M(NM),   M(NM),   M(NM),  KC_NO,  
+       KC_NO,   M(Sl),   M(Tl),   M(Pl),   M(Hl),   M(X),
+       KC_NO,   M(Sl),   M(Kl),   M(Wl),   M(Rl),   M(X),   KC_NO,
+       KC_NO,   KC_NO,   KC_NO,   KC_NO,   KC_NO,
+                                           KC_NO,   KC_NO,  
+                                                    KC_NO,  
+                                  M(Al),   M(Ol),   KC_NO,  
+    // right hand
+       KC_NO,    KC_NO,   KC_NO,   KC_NO,   KC_NO,   KC_NO,   KC_NO,  
+       KC_TRNS,  M(NM),   M(NM),   M(NM),   M(NM),   M(NM),   M(NM),
+                 M(X),    M(Fr),   M(Pr),   M(Lr),   M(Tr),   M(Dr),
+       KC_NO,    M(X),    M(Rr),   M(Br),   M(Gr),   M(Sr),   M(Zr),
+                          KC_NO,   KC_NO,   KC_NO,   KC_NO,   KC_NO,  
+       KC_NO,   KC_NO,  
+       KC_NO,  
+       KC_NO,   M(Er),   M(Ur)
+),
+/* Keymap 4: TxBolt (Serial) Alternative
+ *
+ * ,--------------------------------------------------.           ,--------------------------------------------------.
+ * |        |   #  |   #  |   #  |   #  |   #  |      |           |      |   #  |   #  |   #  |   #  |   #  |   #    |
+ * |--------+------+------+------+------+-------------|           |------+------+------+------+------+------+--------|
+ * |        |   S  |   T  |   P  |   H  |   *  |      |           |      |   *  |   F  |   P  |   L  |   T  |   D    |
+ * |--------+------+------+------+------+------|      |           |      |------+------+------+------+------+--------|
+ * |        |   S  |   K  |   W  |   R  |   *  |------|           |------|   *  |   R  |   B  |   G  |   S  |   Z    |
+ * |--------+------+------+------+------+------|      |           |      |------+------+------+------+------+--------|
+ * |        |      |      |      |      |      |      |           |      |      |      |      |      |      |        |
+ * `--------+------+------+------+------+-------------'           `-------------+------+------+------+------+--------'
+ *   |      |      |      |   A  |   O  |                                       |   E  |   U  |      |      |      |
+ *   `----------------------------------'                                       `----------------------------------'
+ *                                        ,-------------.       ,-------------.
+ *                                        |      |      |       |      |      |
+ *                                 ,------|------|------|       |------+------+------.
+ *                                 |      |      |      |       |      |      |      |
+ *                                 |      |      |------|       |------|      |      |
+ *                                 |      |      |      |       |      |      |      |
+ *                                 `--------------------'       `--------------------'
+ */
+// TxBolt over Serial
+[TXBOLT2] = KEYMAP(
+       KC_NO,   M(NM),   M(NM),   M(NM),   M(NM),   M(NM),  KC_NO,  
+       KC_NO,   M(Sl),   M(Tl),   M(Pl),   M(Hl),   M(X),   KC_NO,  
+       KC_NO,   M(Sl),   M(Kl),   M(Wl),   M(Rl),   M(X),
+       KC_NO,   KC_NO,   KC_NO,   KC_NO,   KC_NO,   KC_NO,   KC_NO,  
+       KC_NO,   KC_NO,   KC_NO,   M(Al),   M(Ol),
+                                           KC_NO,   KC_NO,  
+                                                    KC_NO,  
+                                  KC_NO,   KC_NO,   KC_NO,  
+    // right hand
+       KC_NO,    M(NM),   M(NM),   M(NM),   M(NM),   M(NM),   M(NM),
+       KC_TRNS,  M(X),    M(Fr),   M(Pr),   M(Lr),   M(Tr),   M(Dr),
+                 M(X),    M(Rr),   M(Br),   M(Gr),   M(Sr),   M(Zr),
+       KC_NO,    KC_NO,   KC_NO,   KC_NO,   KC_NO,   KC_NO,   KC_NO,  
+                          M(Er),   M(Ur),   KC_NO,   KC_NO,   KC_NO,  
+       KC_NO,   KC_NO,  
+       KC_NO,  
+       KC_NO,   KC_NO,   KC_NO
+),
+};
+
+const uint16_t PROGMEM fn_actions[] = {
+    [1] = ACTION_LAYER_TAP_TOGGLE(SYMB)                // FN1 - Momentary Layer 1 (Symbols)
+};
+
+uint8_t chord[4] = {0,0,0,0};
+uint8_t pressed_count = 0;
+
+void send_chord(void)
+{
+  for(uint8_t i = 0; i < 4; i++)
+  {
+    if(chord[i])
+      virtser_send(chord[i]);
+  }
+  virtser_send(0);
+}
+
+bool process_record_user(uint16_t keycode, keyrecord_t *record)
+{
+  // We need to track keypresses in all modes, in case the user
+  // changes mode whilst pressing other keys.
+  if (record->event.pressed)
+    pressed_count++;
+  else
+    pressed_count--;
+  return true;
+}
+
+const macro_t *action_get_macro(keyrecord_t *record, uint8_t id, uint8_t opt)
+{
+  // MACRODOWN only works in this function
+
+  if (record->event.pressed) {
+    uint8_t grp = (id & GRPMASK) >> 6;
+    chord[grp] |= id;
+  }
+  else {
+    if (pressed_count == 0) {
+      send_chord();
+      chord[0] = chord[1] = chord[2] = chord[3] = 0;
+    }
+  }
+  return MACRO_NONE;
+};
+
+// Runs just one time when the keyboard initializes.
+void matrix_init_user(void) {
+};
+
+// Runs constantly in the background, in a loop.
+void matrix_scan_user(void) {
+
+    uint8_t layer = biton32(layer_state);
+
+    ergodox_board_led_off();
+    ergodox_right_led_1_off();
+    ergodox_right_led_2_off();
+    ergodox_right_led_3_off();
+    switch (layer) {
+      // TODO: Make this relevant to the ErgoDox EZ.
+        case 1:
+            ergodox_right_led_1_on();
+            break;
+        case 2:
+            ergodox_right_led_2_on();
+            break;
+        default:
+            // none
+            break;
+    }
+
+};
diff --git a/keyboards/ergodox/ez/keymaps/steno/readme.md b/keyboards/ergodox/ez/keymaps/steno/readme.md
new file mode 100644
index 00000000..d67cde2a
--- /dev/null
+++ b/keyboards/ergodox/ez/keymaps/steno/readme.md
@@ -0,0 +1,92 @@
+# ErgoDox EZ Steno Configuration
+
+This layout has a layer that uses the TxBolt Stenograph protocol over a Virtual Serial port. It requires something like Plover in order to function.
+
+In Plover, you can select TX Bolt as the Stenotype Machine, and find the COM port that was assigned. In this way, your regular keyboard will still function normally, and you can switch back and forth between the Steno and Keyboard layers.
+
+<pre><code>
+/* Keymap 0: Basic layer
+ *
+ * ,--------------------------------------------------.           ,--------------------------------------------------.
+ * |   =    |   1  |   2  |   3  |   4  |   5  | LEFT |           | RIGHT|   6  |   7  |   8  |   9  |   0  |   -    |
+ * |--------+------+------+------+------+-------------|           |------+------+------+------+------+------+--------|
+ * | Del    |   Q  |   W  |   E  |   R  |   T  |  L1  |           |  TX  |   Y  |   U  |   I  |   O  |   P  |   \    |
+ * |--------+------+------+------+------+------|      |           | BOLT |------+------+------+------+------+--------|
+ * | BkSp   |   A  |   S  |   D  |   F  |   G  |------|           |------|   H  |   J  |   K  |   L  |; / L2|' / Cmd |
+ * |--------+------+------+------+------+------| Hyper|           | Meh  |------+------+------+------+------+--------|
+ * | LShift |Z/Ctrl|   X  |   C  |   V  |   B  |      |           |      |   N  |   M  |   ,  |   .  |//Ctrl| RShift |
+ * `--------+------+------+------+------+-------------'           `-------------+------+------+------+------+--------'
+ *   |Grv/L1|  '"  |AltShf| Left | Right|                                       |  Up  | Down |   [  |   ]  | ~L1  |
+ *   `----------------------------------'                                       `----------------------------------'
+ *                                        ,-------------.       ,-------------.
+ *                                        | App  | LGui |       | Alt  |Ctrl/Esc|
+ *                                 ,------|------|------|       |------+--------+------.
+ *                                 |      |      | Home |       | PgUp |        |      |
+ *                                 | Space|Backsp|------|       |------|  Tab   |Enter |
+ *                                 |      |ace   | End  |       | PgDn |        |      |
+ *                                 `--------------------'       `----------------------'
+ */
+/* Keymap 1: Symbol Layer
+ *
+ * ,--------------------------------------------------.           ,--------------------------------------------------.
+ * |Version |  F1  |  F2  |  F3  |  F4  |  F5  |      |           |      |  F6  |  F7  |  F8  |  F9  |  F10 |   F11  |
+ * |--------+------+------+------+------+-------------|           |------+------+------+------+------+------+--------|
+ * |        |   !  |   @  |   {  |   }  |   |  |      |           |      |   Up |   7  |   8  |   9  |   *  |   F12  |
+ * |--------+------+------+------+------+------|      |           |      |------+------+------+------+------+--------|
+ * |        |   #  |   $  |   (  |   )  |   `  |------|           |------| Down |   4  |   5  |   6  |   +  |        |
+ * |--------+------+------+------+------+------|      |           |      |------+------+------+------+------+--------|
+ * |        |   %  |   ^  |   [  |   ]  |   ~  |      |           |      |   &  |   1  |   2  |   3  |   \  |        |
+ * `--------+------+------+------+------+-------------'           `-------------+------+------+------+------+--------'
+ *   |      |      |      |      |      |                                       |      |    . |   0  |   =  |      |
+ *   `----------------------------------'                                       `----------------------------------'
+ *                                        ,-------------.       ,-------------.
+ *                                        |      |      |       |      |      |
+ *                                 ,------|------|------|       |------+------+------.
+ *                                 |      |      |      |       |      |      |      |
+ *                                 |      |      |------|       |------|      |      |
+ *                                 |      |      |      |       |      |      |      |
+ *                                 `--------------------'       `--------------------'
+ */
+/* Keymap 2: Media keys
+ *
+ * ,--------------------------------------------------.           ,--------------------------------------------------.
+ * | RESET  |      |      |      |      |      |      |           |      |      |      |      |      |      |        |
+ * |--------+------+------+------+------+-------------|           |------+------+------+------+------+------+--------|
+ * |        |      |      |      |      |      |      |           |      |      |      |      |      |      |        |
+ * |--------+------+------+------+------+------|      |           |      |------+------+------+------+------+--------|
+ * |        |      |      |      |      |      |------|           |------|      |      |      |      |      |  Play  |
+ * |--------+------+------+------+------+------|      |           |      |------+------+------+------+------+--------|
+ * |        |      |      |      |      |      |      |           |      |      |      | Prev | Next |      |        |
+ * `--------+------+------+------+------+-------------'           `-------------+------+------+------+------+--------'
+ *   |      |      |      |      |      |                                       |VolUp |VolDn | Mute |      |      |
+ *   `----------------------------------'                                       `----------------------------------'
+ *                                        ,-------------.       ,-------------.
+ *                                        |      |      |       |      |      |
+ *                                 ,------|------|------|       |------+------+------.
+ *                                 |      |      |      |       |      |      |Brwser|
+ *                                 |      |      |------|       |------|      |Back  |
+ *                                 |      |      |      |       |      |      |      |
+ *                                 `--------------------'       `--------------------'
+ */
+/* Keymap 3: TxBolt (Serial)
+ *
+ * ,--------------------------------------------------.           ,--------------------------------------------------.
+ * | BKSPC  |      |      |      |      |      |      |           |      |      |      |      |      |      |        |
+ * |--------+------+------+------+------+-------------|           |------+------+------+------+------+------+--------|
+ * |        |   #  |   #  |   #  |   #  |   #  |      |           |      |   #  |   #  |   #  |   #  |   #  |   #    |
+ * |--------+------+------+------+------+------|      |           |      |------+------+------+------+------+--------|
+ * |        |   S  |   T  |   P  |   H  |   *  |------|           |------|   *  |   F  |   P  |   L  |   T  |   D    |
+ * |--------+------+------+------+------+------|      |           |      |------+------+------+------+------+--------|
+ * |        |   S  |   K  |   W  |   R  |   *  |      |           |      |   *  |   R  |   B  |   G  |   S  |   Z    |
+ * `--------+------+------+------+------+-------------'           `-------------+------+------+------+------+--------'
+ *   |      |      |      |      |      |                                       |      |      |      |      |      |
+ *   `----------------------------------'                                       `----------------------------------'
+ *                                        ,-------------.       ,-------------.
+ *                                        |      |      |       |      |      |
+ *                                 ,------|------|------|       |------+------+------.
+ *                                 |      |      |      |       |      |      |      |
+ *                                 |   A  |   O  |------|       |------|   E  |   U  |
+ *                                 |      |      |      |       |      |      |      |
+ *                                 `--------------------'       `--------------------'
+ */
+</code></pre>
diff --git a/keyboards/ergodox/infinity/infinity.c b/keyboards/ergodox/infinity/infinity.c
index f89e046d..c5793385 100644
--- a/keyboards/ergodox/infinity/infinity.c
+++ b/keyboards/ergodox/infinity/infinity.c
@@ -130,3 +130,27 @@ void ergodox_right_led_3_off(void){
 
 void ergodox_right_led_off(uint8_t led){
 }
+
+#ifdef ONEHAND_ENABLE
+__attribute__ ((weak))
+const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+    {{0, 9}, {1, 9}, {2, 9}, {3, 9}, {4, 9}},
+    {{0, 10}, {1, 10}, {2, 10}, {3, 10}, {4, 10}},
+    {{0, 11}, {1, 11}, {2, 11}, {3, 11}, {4, 11}},
+    {{0, 12}, {1, 12}, {2, 12}, {3, 12}, {4, 12}},
+    {{0, 13}, {1, 13}, {2, 13}, {3, 13}, {4, 13}},
+    {{0, 14}, {1, 14}, {2, 14}, {3, 14}, {4, 14}},
+    {{0, 15}, {1, 15}, {2, 15}, {3, 15}, {4, 15}},
+    {{0, 16}, {1, 16}, {2, 16}, {3, 16}, {4, 16}},
+    {{0, 17}, {1, 17}, {2, 17}, {3, 17}, {4, 17}},
+    {{0, 0}, {1, 0}, {2, 0}, {3, 0}, {4, 0}},
+    {{0, 1}, {1, 1}, {2, 1}, {3, 1}, {4, 1}},
+    {{0, 2}, {1, 2}, {2, 2}, {3, 2}, {4, 2}},
+    {{0, 3}, {1, 3}, {2, 3}, {3, 3}, {4, 3}},
+    {{0, 4}, {1, 4}, {2, 4}, {3, 4}, {4, 4}},
+    {{0, 5}, {1, 5}, {2, 5}, {3, 5}, {4, 5}},
+    {{0, 6}, {1, 6}, {2, 6}, {3, 6}, {4, 6}},
+    {{0, 7}, {1, 7}, {2, 7}, {3, 7}, {4, 7}},
+    {{0, 8}, {1, 8}, {2, 8}, {3, 8}, {4, 8}},
+};
+#endif
diff --git a/keyboards/kitten_paw/Makefile b/keyboards/kitten_paw/Makefile
new file mode 100644
index 00000000..91229217
--- /dev/null
+++ b/keyboards/kitten_paw/Makefile
@@ -0,0 +1,77 @@
+
+
+# MCU name
+#MCU = at90usb1287
+MCU = atmega32u2
+
+# Processor frequency.
+#     This will define a symbol, F_CPU, in all source code files equal to the
+#     processor frequency in Hz. You can then use this symbol in your source code to
+#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
+#     automatically to create a 32-bit value in your source code.
+#
+#     This will be an integer division of F_USB below, as it is sourced by
+#     F_USB after it has run through any CPU prescalers. Note that this value
+#     does not *change* the processor frequency - it should merely be updated to
+#     reflect the processor speed set externally so that the code can use accurate
+#     software delays.
+F_CPU = 16000000
+
+
+#
+# LUFA specific
+#
+# Target architecture (see library "Board Types" documentation).
+ARCH = AVR8
+
+# Input clock frequency.
+#     This will define a symbol, F_USB, in all source code files equal to the
+#     input clock frequency (before any prescaling is performed) in Hz. This value may
+#     differ from F_CPU if prescaling is used on the latter, and is required as the
+#     raw input clock is fed directly to the PLL sections of the AVR for high speed
+#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
+#     at the end, this will be done automatically to create a 32-bit value in your
+#     source code.
+#
+#     If no clock division is performed on the input clock inside the AVR (via the
+#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
+F_USB = $(F_CPU)
+
+# Interrupt driven control endpoint task(+60)
+OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
+
+
+# Boot Section Size in *bytes*
+#   Teensy halfKay   512
+#   Teensy++ halfKay 1024
+#   Atmel DFU loader 4096
+#   LUFA bootloader  4096
+#   USBaspLoader     2048
+	OPT_DEFS += -DBOOTLOADER_SIZE=4096
+
+
+# Build Options
+#   change yes to no to disable
+#
+BOOTMAGIC_ENABLE ?= no      # Virtual DIP switch configuration(+1000)
+MOUSEKEY_ENABLE ?= yes       # Mouse keys(+4700)
+EXTRAKEY_ENABLE ?= yes       # Audio control and System control(+450)
+CONSOLE_ENABLE ?= yes        # Console for debug(+400)
+COMMAND_ENABLE ?= yes        # Commands for debug and configuration
+# Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
+SLEEP_LED_ENABLE ?= no       # Breathing sleep LED during USB suspend
+# if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE ?= no            # USB Nkey Rollover
+BACKLIGHT_ENABLE ?= no       # Enable keyboard backlight functionality on B7 by default
+MIDI_ENABLE ?= no            # MIDI controls
+UNICODE_ENABLE ?= no         # Unicode
+BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
+AUDIO_ENABLE ?= no           # Audio output on port C6
+
+CUSTOM_MATRIX = yes
+SRC += matrix.c led.c
+
+ifndef QUANTUM_DIR
+	include ../../Makefile
+endif
+
diff --git a/keyboards/kitten_paw/config.h b/keyboards/kitten_paw/config.h
new file mode 100644
index 00000000..d7089734
--- /dev/null
+++ b/keyboards/kitten_paw/config.h
@@ -0,0 +1,162 @@
+/*
+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      0x6050
+#define DEVICE_VER      0x0104
+#define MANUFACTURER    Costar
+#define PRODUCT         Majestouch
+
+/* key matrix size */
+#define MATRIX_ROWS 8
+#define MATRIX_COLS 18
+
+/*
+ * Keyboard Matrix Assignments
+ *
+ * Change this to how you wired your keyboard
+ * COLS: AVR pins used for columns, left to right
+ * ROWS: AVR pins used for rows, top to bottom
+ * DIODE_DIRECTION: COL2ROW = COL = Anode (+), ROW = Cathode (-, marked on diode)
+ *                  ROW2COL = ROW = Anode (+), COL = Cathode (-, marked on diode)
+ *
+*/
+//#define MATRIX_ROW_PINS { D0, D5 }
+//#define MATRIX_COL_PINS { F1, F0, B0 }
+//#define UNUSED_PINS
+
+/* COL2ROW or ROW2COL */
+#define DIODE_DIRECTION COL2ROW
+ 
+// #define BACKLIGHT_PIN B7
+// #define BACKLIGHT_BREATHING
+// #define BACKLIGHT_LEVELS 3
+
+
+/* Debounce reduces chatter (unintended double-presses) - set 0 if debouncing is not needed */
+#define DEBOUNCING_DELAY 5
+
+/* define if matrix has ghost (lacks anti-ghosting diodes) */
+//#define MATRIX_HAS_GHOST
+
+/* number of backlight levels */
+
+/* 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
+
+/*
+ * Force NKRO
+ *
+ * Force NKRO (nKey Rollover) to be enabled by default, regardless of the saved
+ * state in the bootmagic EEPROM settings. (Note that NKRO must be enabled in the
+ * makefile for this to work.)
+ *
+ * If forced on, NKRO can be disabled via magic key (default = LShift+RShift+N)
+ * until the next keyboard reset.
+ *
+ * NKRO may prevent your keystrokes from being detected in the BIOS, but it is
+ * fully operational during normal computer usage.
+ *
+ * For a less heavy-handed approach, enable NKRO via magic key (LShift+RShift+N)
+ * or via bootmagic (hold SPACE+N while plugging in the keyboard). Once set by
+ * bootmagic, NKRO mode will always be enabled until it is toggled again during a
+ * power-up.
+ *
+ */
+//#define FORCE_NKRO
+
+/*
+ * Magic Key Options
+ *
+ * Magic keys are hotkey commands that allow control over firmware functions of
+ * the keyboard. They are best used in combination with the HID Listen program,
+ * found here: https://www.pjrc.com/teensy/hid_listen.html
+ *
+ * The options below allow the magic key functionality to be changed. This is
+ * useful if your keyboard/keypad is missing keys and you want magic key support.
+ *
+ */
+
+/* key combination for magic key command */
+#define IS_COMMAND() ( \
+    keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
+)
+
+/* control how magic key switches layers */
+//#define MAGIC_KEY_SWITCH_LAYER_WITH_FKEYS  true
+//#define MAGIC_KEY_SWITCH_LAYER_WITH_NKEYS  true
+//#define MAGIC_KEY_SWITCH_LAYER_WITH_CUSTOM false
+
+/* override magic key keymap */
+//#define MAGIC_KEY_SWITCH_LAYER_WITH_FKEYS
+//#define MAGIC_KEY_SWITCH_LAYER_WITH_NKEYS
+//#define MAGIC_KEY_SWITCH_LAYER_WITH_CUSTOM
+//#define MAGIC_KEY_HELP1          H
+//#define MAGIC_KEY_HELP2          SLASH
+//#define MAGIC_KEY_DEBUG          D
+//#define MAGIC_KEY_DEBUG_MATRIX   X
+//#define MAGIC_KEY_DEBUG_KBD      K
+//#define MAGIC_KEY_DEBUG_MOUSE    M
+//#define MAGIC_KEY_VERSION        V
+//#define MAGIC_KEY_STATUS         S
+//#define MAGIC_KEY_CONSOLE        C
+//#define MAGIC_KEY_LAYER0_ALT1    ESC
+//#define MAGIC_KEY_LAYER0_ALT2    GRAVE
+//#define MAGIC_KEY_LAYER0         0
+//#define MAGIC_KEY_LAYER1         1
+//#define MAGIC_KEY_LAYER2         2
+//#define MAGIC_KEY_LAYER3         3
+//#define MAGIC_KEY_LAYER4         4
+//#define MAGIC_KEY_LAYER5         5
+//#define MAGIC_KEY_LAYER6         6
+//#define MAGIC_KEY_LAYER7         7
+//#define MAGIC_KEY_LAYER8         8
+//#define MAGIC_KEY_LAYER9         9
+//#define MAGIC_KEY_BOOTLOADER     PAUSE
+//#define MAGIC_KEY_LOCK           CAPS
+//#define MAGIC_KEY_EEPROM         E
+//#define MAGIC_KEY_NKRO           N
+//#define MAGIC_KEY_SLEEP_LED      Z
+
+/*
+ * Feature disable options
+ *  These options are also useful to firmware size reduction.
+ */
+
+/* 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/kitten_paw/keymaps/default/keymap.c b/keyboards/kitten_paw/keymaps/default/keymap.c
new file mode 100644
index 00000000..f6723574
--- /dev/null
+++ b/keyboards/kitten_paw/keymaps/default/keymap.c
@@ -0,0 +1,51 @@
+#include "kitten_paw.h"
+
+enum layers {
+    DEFAULT,
+};
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+  [DEFAULT] = KEYMAP(\
+       KC_ESC,  KC_F1,  KC_F2,  KC_F3,  KC_F4,  KC_F5,  KC_F6,  KC_F7,  KC_F8,  KC_F9, KC_F10, KC_F11, KC_F12,          KC_PSCR,KC_SLCK,KC_PAUS,                        \
+       KC_GRV,   KC_1,   KC_2,   KC_3,   KC_4,   KC_5,   KC_6,   KC_7,   KC_8,   KC_9,   KC_0,KC_MINS, KC_EQL,KC_BSPC,   KC_INS,KC_HOME,KC_PGUP,  KC_NLCK,KC_PSLS,KC_PAST,KC_PMNS, \
+       KC_TAB,   KC_Q,   KC_W,   KC_E,   KC_R,   KC_T,   KC_Y,   KC_U,   KC_I,   KC_O,   KC_P,KC_LBRC,KC_RBRC,KC_BSLS,   KC_DEL, KC_END,KC_PGDN,    KC_P7,  KC_P8,  KC_P9,KC_PPLS, \
+      KC_CAPS,   KC_A,   KC_S,   KC_D,   KC_F,   KC_G,   KC_H,   KC_J,   KC_K,   KC_L,KC_SCLN,KC_QUOT,         KC_ENT,                              KC_P4,  KC_P5,  KC_P6,      \
+      KC_LSFT,KC_NUBS,   KC_Z,   KC_X,   KC_C,   KC_V,   KC_B,   KC_N,   KC_M,KC_COMM, KC_DOT,KC_SLSH,        KC_RSFT,            KC_UP,            KC_P1,  KC_P2,  KC_P3,KC_PENT, \
+      KC_LCTL,KC_LGUI,KC_LALT,                 KC_SPC,                                KC_RALT,KC_RGUI,KC_MENU,KC_RCTL,  KC_LEFT,KC_DOWN,KC_RGHT,    KC_P0,KC_PDOT)
+};
+
+const uint16_t PROGMEM fn_actions[] = {
+
+};
+
+const macro_t *action_get_macro(keyrecord_t *record, uint8_t id, uint8_t opt)
+{
+  // MACRODOWN only works in this function
+      switch(id) {
+        case 0:
+          if (record->event.pressed) {
+            register_code(KC_RSFT);
+          } else {
+            unregister_code(KC_RSFT);
+          }
+        break;
+      }
+    return MACRO_NONE;
+};
+
+
+void matrix_init_user(void) {
+
+}
+
+void matrix_scan_user(void) {
+
+}
+
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+  return true;
+}
+
+void led_set_user(uint8_t usb_led) {
+
+}
\ No newline at end of file
diff --git a/keyboards/kitten_paw/kitten_paw.c b/keyboards/kitten_paw/kitten_paw.c
new file mode 100644
index 00000000..8713baf4
--- /dev/null
+++ b/keyboards/kitten_paw/kitten_paw.c
@@ -0,0 +1,30 @@
+#include "kitten_paw.h"
+
+void matrix_init_kb(void) {
+	// put your keyboard start-up code here
+	// runs once when the firmware starts up
+
+    matrix_init_quantum();
+	matrix_init_user();
+}
+
+void matrix_scan_kb(void) {
+	// put your looping keyboard code here
+	// runs every cycle (a lot)
+
+    matrix_scan_quantum();
+    matrix_scan_user();
+}
+
+bool process_record_kb(uint16_t keycode, keyrecord_t *record) {
+	// put your per-action keyboard code here
+	// runs for every action, just before processing by the firmware
+
+	return process_record_user(keycode, record);
+}
+
+void led_set_kb(uint8_t usb_led) {
+	// put your keyboard LED indicator (ex: Caps Lock LED) toggling code here
+
+	led_set_user(usb_led);
+}
diff --git a/keyboards/kitten_paw/kitten_paw.h b/keyboards/kitten_paw/kitten_paw.h
new file mode 100644
index 00000000..a6c1d27d
--- /dev/null
+++ b/keyboards/kitten_paw/kitten_paw.h
@@ -0,0 +1,47 @@
+#ifndef KITTEN_PAW_H
+#define KITTEN_PAW_H
+
+#include "quantum.h"
+
+// This a shortcut to help you visually see your layout.
+// The first section contains all of the arguements
+// The second converts the arguments into a two-dimensional array
+/*
+  Matrix col/row mapping
+  
+  ,----.    ,-------------------. ,-------------------. ,-------------------. ,--------------.
+  | J6 |    | I4 | H4 | H2 | H6 | | A7 | E6 | D2 | D4 | | B4 | B7 | B6 | B0 | | C7 | C5 | A5 |
+  `----'    `-------------------' `-------------------' `-------------------' `--------------'
+  ,-------------------------------------------------------------------------. ,--------------. ,-------------------.
+  | J4 | J7 | I7 | H7 | G7 | G4 | F4 | F7 | E7 | D7 | R7 | R4 | E4 |     B2 | | L4 | O4 | Q4 | | K1 | L1 | Q1 | Q0 |
+  |-------------------------------------------------------------------------| |--------------| |-------------------|
+  | J2   | J5 | I5 | H5 | G5 | G2 | F2 | F5 | E5 | D5 | R5 | R2 | E2 |   B3 | | K4 | O7 | Q7 | | K5 | L5 | Q5 | O5 |
+  |-------------------------------------------------------------------------| '--------------' |--------------     |
+  | O5    | J3 | I3 | H3 | G3 | G6 | F6 | F3 | E3 | D3 | R3 | R6 |       B1 |                  | K2 | L2 | Q2 |    |
+  |-------------------------------------------------------------------------|      ,----.      |-------------------|
+  | N2      | J1 | I1 | H1 | G1 | G0 | F0 | F1 | E1 | D1 | R0 |          N3 |      | O6 |      | K3 | L3 | Q3 | O3 |
+  |-------------------------------------------------------------------------| ,--------------. |--------------     |
+  | A4 | P2 | C6 |                  K6                  | C0 | M3 | D0 | A1 | | O0 | K0 | L0 | | L6      | Q6 |    |
+  `-------------------------------------------------------------------------' `--------------' `-------------------'
+*/
+
+#define KEYMAP( \
+  KJ6,      KI4, KH4, KH2, KH6, KA7, KE6, KD2, KD4, KB4, KB7, KB6, KB0,   KC7, KC5, KA5,                       \
+  KJ4, KJ7, KI7, KH7, KG7, KG4, KF4, KF7, KE7, KD7, KR7, KR4, KE4, KB2,   KL4, KO4, KQ4,   KK1, KL1, KQ1, KQ0, \
+  KJ2, KJ5, KI5, KH5, KG5, KG2, KF2, KF5, KE5, KD5, KR5, KR2, KE2, KB3,   KK4, KO7, KQ7,   KK5, KL5, KQ5, KO5, \
+  KI2, KJ3, KI3, KH3, KG3, KG6, KF6, KF3, KE3, KD3, KR3, KR6,      KB1,                    KK2, KL2, KQ2,      \
+  KN2, KI6, KJ1, KI1, KH1, KG1, KG0, KF0, KF1, KE1, KD1, KR0,      KN3,        KO6,        KK3, KL3, KQ3, KO3, \
+  KA4, KP2, KC6,                KK6,                KC0, KM3, KD0, KA1,   KO0, KK0, KL0,   KL6,      KQ6       \
+) \
+{ \
+    {KC_NO,  KB0,  KC0,  KD0,KC_NO,  KF0,  KG0,KC_NO,KC_NO,KC_NO,  KK0,  KL0,KC_NO,KC_NO,  KO0,KC_NO,  KQ0,  KR0}, \
+    {  KA1,  KB1,KC_NO,  KD1,  KE1,  KF1,  KG1,  KH1,  KI1,  KJ1,  KK1,  KL1,KC_NO,KC_NO,KC_NO,KC_NO,  KQ1,KC_NO}, \
+    {KC_NO,  KB2,KC_NO,  KD2,  KE2,  KF2,  KG2,  KH2,  KI2,  KJ2,  KK2,  KL2,KC_NO,  KN2,KC_NO,  KP2,  KQ2,  KR2}, \
+    {KC_NO,  KB3,KC_NO,  KD3,  KE3,  KF3,  KG3,  KH3,  KI3,  KJ3,  KK3,  KL3,  KM3,  KN3,  KO3,KC_NO,  KQ3,  KR3}, \
+    {  KA4,  KB4,KC_NO,  KD4,  KE4,  KF4,  KG4,  KH4,  KI4,  KJ4,  KK4,  KL4,KC_NO,KC_NO,  KO4,KC_NO,  KQ4,  KR4}, \
+    {  KA5,KC_NO,  KC5,  KD5,  KE5,  KF5,  KG5,  KH5,  KI5,  KJ5,  KK5,  KL5,KC_NO,KC_NO,  KO5,KC_NO,  KQ5,  KR5}, \
+    {KC_NO,  KB6,  KC6,KC_NO,  KE6,  KF6,  KG6,  KH6,  KI6,  KJ6,  KK6,  KL6,KC_NO,KC_NO,  KO6,KC_NO,  KQ6,  KR6}, \
+    {  KA7,  KB7,  KC7,  KD7,  KE7,  KF7,  KG7,  KH7,  KI7,  KJ7,KC_NO,KC_NO,KC_NO,KC_NO,  KO7,KC_NO,  KQ7,  KR7} \
+}
+
+#endif
diff --git a/keyboards/kitten_paw/led.c b/keyboards/kitten_paw/led.c
new file mode 100644
index 00000000..a1bf057c
--- /dev/null
+++ b/keyboards/kitten_paw/led.c
@@ -0,0 +1,47 @@
+/*
+  Copyright 2014 Ralf Schmitt <ralf@bunkertor.net>
+
+  This program is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 2 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <avr/io.h>
+#include "stdint.h"
+#include "led.h"
+
+/* LED pin configuration
+ *
+ * Scroll Lock  PC5
+ * Caps Lock    PC6
+ * Num Lock     PB7
+ *
+ */
+void led_set(uint8_t usb_led) {
+  DDRB |= (1<<7);
+  DDRC |= (1<<5) | (1<<6);
+  
+  if (usb_led & (1<<USB_LED_CAPS_LOCK))
+    PORTC &= ~(1<<6);
+  else
+    PORTC |=  (1<<6);
+  
+  if (usb_led & (1<<USB_LED_NUM_LOCK))
+    PORTB &= ~(1<<7);
+  else
+    PORTB |=  (1<<7);
+  
+  if (usb_led & (1<<USB_LED_SCROLL_LOCK))
+    PORTC &= ~(1<<5);
+  else
+    PORTC |=  (1<<5);
+}
diff --git a/keyboards/kitten_paw/matrix.c b/keyboards/kitten_paw/matrix.c
new file mode 100644
index 00000000..46875293
--- /dev/null
+++ b/keyboards/kitten_paw/matrix.c
@@ -0,0 +1,164 @@
+/*
+  Copyright 2014 Ralf Schmitt <ralf@bunkertor.net>
+
+  This program is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 2 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <avr/io.h>
+#include <util/delay.h>
+#include "print.h"
+#include "debug.h"
+#include "util.h"
+#include "matrix.h"
+
+#ifndef DEBOUNCING_DELAY
+#   define DEBOUNCING_DELAY 5
+#endif
+static uint8_t debouncing = DEBOUNCING_DELAY;
+
+static matrix_row_t matrix[MATRIX_ROWS];
+static matrix_row_t matrix_debouncing[MATRIX_ROWS];
+
+static uint8_t read_rows(void);
+static void select_col(uint8_t col);
+
+inline uint8_t matrix_rows(void) {
+  return MATRIX_ROWS;
+}
+
+inline uint8_t matrix_cols(void) {
+  return MATRIX_COLS;
+}
+
+/* Column pin configuration
+ *
+ * col: 0    1    2    3    4    5    6    7
+ * pin: PC7  PD5  PD3  PD1  PC2  PD6  PD4  PD2
+ *
+ * Rrr pin configuration 
+ *
+ * These rrrs uses one 74HC154 4 to 16 bit demultiplexer (low
+ * active), together with 2 rrrs driven directly from the micro
+ * controller, to control the 18 rrrs. The rrrs are driven from
+ * pins B6,5,4,3,2,1,0.
+ */
+void matrix_init(void) {
+  DDRC  &= ~0b10000100;  // Row input pins
+  DDRD  &= ~0b01111110;
+  PORTC |=  0b10000100;
+  PORTD |=  0b01111110;
+
+  DDRB  |=  0b01111111;  // Column output pins
+
+  for (uint8_t i=0; i < MATRIX_ROWS; i++)  {
+    matrix[i] = 0;
+    matrix_debouncing[i] = 0;
+  }
+}
+
+uint8_t matrix_scan(void) {
+  for (uint8_t col = 0; col < MATRIX_COLS; col++) {
+    select_col(col);
+    _delay_us(3);
+    uint8_t rows = read_rows();
+    for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
+      bool prev_bit = matrix_debouncing[row] & ((matrix_row_t)1<<col);
+      bool curr_bit = rows & (1<<row);
+      if (prev_bit != curr_bit) {
+        matrix_debouncing[row] ^= ((matrix_row_t)1<<col);
+        debouncing = DEBOUNCING_DELAY;
+      }
+    }
+  }
+  
+  if (debouncing) {
+    if (--debouncing) {
+      _delay_ms(1);
+    }
+    else {
+      for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
+        matrix[i] = matrix_debouncing[i];
+      }
+    }
+  }
+  
+  return 1;
+}
+
+bool matrix_is_modified(void) {
+  if (debouncing)
+    return false;
+  else
+    return true;
+}
+
+inline bool matrix_is_on(uint8_t row, uint8_t col) {
+  return (matrix[row] & ((matrix_row_t)1<<col));
+}
+
+inline matrix_row_t matrix_get_row(uint8_t row) {
+  return matrix[row];
+}
+
+void matrix_print(void) {
+  print("\nr/c 0123456789ABCDEF\n");
+  for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
+    xprintf("%02X: %032lb\n", row, bitrev32(matrix_get_row(row)));
+  }
+}
+
+uint8_t matrix_key_count(void) {
+  uint8_t count = 0;
+  for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
+    count += bitpop32(matrix[i]);
+  }
+  return count;
+}
+
+static uint8_t read_rows(void) {
+  return
+    (PINC&(1<<7) ? 0 : (1<<0)) |
+    (PIND&(1<<5) ? 0 : (1<<1)) |
+    (PIND&(1<<3) ? 0 : (1<<2)) |
+    (PIND&(1<<1) ? 0 : (1<<3)) |
+    (PINC&(1<<2) ? 0 : (1<<4)) |
+    (PIND&(1<<2) ? 0 : (1<<5)) |
+    (PIND&(1<<4) ? 0 : (1<<6)) |
+    (PIND&(1<<6) ? 0 : (1<<7));
+}
+
+static void select_col(uint8_t col) {
+  switch (col) {
+  case  0: PORTB = (PORTB & ~0b01111111) | 0b01100100; break;
+  case  1: PORTB = (PORTB & ~0b01111111) | 0b01101100; break;
+  case  2: PORTB = (PORTB & ~0b01111111) | 0b01100010; break;
+  case  3: PORTB = (PORTB & ~0b01111111) | 0b01111010; break;
+  case  4: PORTB = (PORTB & ~0b01111111) | 0b01100110; break;
+  case  5: PORTB = (PORTB & ~0b01111111) | 0b01110110; break;
+  case  6: PORTB = (PORTB & ~0b01111111) | 0b01101110; break;
+  case  7: PORTB = (PORTB & ~0b01111111) | 0b01111110; break;
+  case  8: PORTB = (PORTB & ~0b01111111) | 0b01000001; break;
+  case  9: PORTB = (PORTB & ~0b01111111) | 0b00100001; break;
+  case 10: PORTB = (PORTB & ~0b01111111) | 0b01101010; break;
+  case 11: PORTB = (PORTB & ~0b01111111) | 0b01110010; break;
+  case 12: PORTB = (PORTB & ~0b01111111) | 0b01111100; break;
+  case 13: PORTB = (PORTB & ~0b01111111) | 0b01110100; break;
+  case 14: PORTB = (PORTB & ~0b01111111) | 0b01111000; break;
+  case 15: PORTB = (PORTB & ~0b01111111) | 0b01110000; break;
+  case 16: PORTB = (PORTB & ~0b01111111) | 0b01100000; break;
+  case 17: PORTB = (PORTB & ~0b01111111) | 0b01101000; break;
+  }
+}
diff --git a/keyboards/kitten_paw/readme.md b/keyboards/kitten_paw/readme.md
new file mode 100644
index 00000000..a6ef2a06
--- /dev/null
+++ b/keyboards/kitten_paw/readme.md
@@ -0,0 +1,32 @@
+kitten_paw keyboard firmware
+======================
+This is the firmware for the 2016 revision of the Kitten Paw controller by Bathroom Epiphanies.
+Most of the boilerplate code is the work of [BathroomEpiphanies](https://github.com/BathroomEpiphanies).
+
+NKRO doesn't work at the moment, I don't know if I will take the time to find out how to fix this, so far 6KRO is enough for me.
+
+## Quantum MK Firmware
+
+For the full Quantum feature list, see [the parent readme.md](/doc/readme.md).
+
+## Building
+
+Download or clone the whole firmware and navigate to the keyboards/kitten_paw folder. Once your dev env is setup, you'll be able to type `make` to generate your .hex - you can then use the Teensy Loader to program your .hex file. 
+
+Depending on which keymap you would like to use, you will have to compile slightly differently.
+
+### Default
+
+To build with the default keymap, simply run `make`.
+
+### Other Keymaps
+
+Several version of keymap are available in advance but you are recommended to define your favorite layout yourself. To define your own keymap create a folder with the name of your keymap in the keymaps folder, and see keymap documentation (you can find in top readme.md) and existant keymap files.
+
+To build the firmware binary hex file with a keymap just do `make` with `keymap` option like:
+
+```
+$ make keymap=[default|jack|<name>]
+```
+
+Keymaps follow the format **__keymap.c__** and are stored in folders in the `keymaps` folder, eg `keymaps/my_keymap/`
diff --git a/keyboards/planck/keymaps/experimental/Makefile b/keyboards/planck/keymaps/experimental/Makefile
index 877c4aed..3a8250a9 100644
--- a/keyboards/planck/keymaps/experimental/Makefile
+++ b/keyboards/planck/keymaps/experimental/Makefile
@@ -16,6 +16,7 @@ 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 = yes        # 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
diff --git a/keyboards/planck/keymaps/experimental/keymap.c b/keyboards/planck/keymaps/experimental/keymap.c
index 2c127009..569dbcc8 100644
--- a/keyboards/planck/keymaps/experimental/keymap.c
+++ b/keyboards/planck/keymaps/experimental/keymap.c
@@ -70,7 +70,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
   {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 },
-  {KC_LEAD, KC_LCTL, KC_LALT, KC_LGUI, LOWER,   KC_SPC,  KC_SPC,  RAISE,   KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT}
+  {KC_LEAD, KC_LCTL, KC_LALT, KC_LGUI, LOWER,   KC_FN0,  KC_FN0,  RAISE,   KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT}
 },
 
 /* Colemak
@@ -88,7 +88,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
   {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 },
-  {KC_LEAD, KC_LCTL, KC_LALT, KC_LGUI, LOWER,   KC_SPC,  KC_SPC,  RAISE,   KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT}
+  {KC_LEAD, KC_LCTL, KC_LALT, KC_LGUI, LOWER,   KC_FN0,  KC_FN0,  RAISE,   KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT}
 },
 
 /* Dvorak
@@ -106,7 +106,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
   {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 },
-  {KC_LEAD, KC_LCTL, KC_LALT, KC_LGUI, LOWER,   KC_SPC,  KC_SPC,  RAISE,   KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT}
+  {KC_LEAD, KC_LCTL, KC_LALT, KC_LGUI, LOWER,   KC_FN0,  KC_FN0,  RAISE,   KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT}
 },
 
 /* Lower
@@ -186,7 +186,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
 };
 
 const uint16_t PROGMEM fn_actions[] = {
-
+  ACTION_SWAP_HANDS_TAP_KEY(KC_SPC),
 };
 
 #ifdef AUDIO_ENABLE
diff --git a/keyboards/planck/planck.c b/keyboards/planck/planck.c
index 8d70bb4e..645b450d 100644
--- a/keyboards/planck/planck.c
+++ b/keyboards/planck/planck.c
@@ -1,5 +1,15 @@
 #include "planck.h"
 
+#ifdef ONEHAND_ENABLE
+__attribute__ ((weak))
+const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+  {{11, 0}, {10, 0}, {9, 0}, {8, 0}, {7, 0}, {6, 0}, {5, 0}, {4, 0}, {3, 0}, {2, 0}, {1, 0}, {0, 0}},
+  {{11, 1}, {10, 1}, {9, 1}, {8, 1}, {7, 1}, {6, 1}, {5, 1}, {4, 1}, {3, 1}, {2, 1}, {1, 1}, {0, 1}},
+  {{11, 2}, {10, 2}, {9, 2}, {8, 2}, {7, 2}, {6, 2}, {5, 2}, {4, 2}, {3, 2}, {2, 2}, {1, 2}, {0, 2}},
+  {{11, 3}, {10, 3}, {9, 3}, {8, 3}, {7, 3}, {6, 3}, {5, 3}, {4, 3}, {3, 3}, {2, 3}, {1, 3}, {0, 3}},
+};
+#endif
+
 void matrix_init_kb(void) {
 	// Turn status LED on
 	DDRE |= (1<<6);
diff --git a/keyboards/preonic/preonic.c b/keyboards/preonic/preonic.c
index 889c3fc8..d9c119b8 100644
--- a/keyboards/preonic/preonic.c
+++ b/keyboards/preonic/preonic.c
@@ -1,5 +1,16 @@
 #include "preonic.h"
 
+#ifdef ONEHAND_ENABLE
+__attribute__ ((weak))
+const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+  {{11, 0}, {10, 0}, {9, 0}, {8, 0}, {7, 0}, {6, 0}, {5, 0}, {4, 0}, {3, 0}, {2, 0}, {1, 0}, {0, 0}},
+  {{11, 1}, {10, 1}, {9, 1}, {8, 1}, {7, 1}, {6, 1}, {5, 1}, {4, 1}, {3, 1}, {2, 1}, {1, 1}, {0, 1}},
+  {{11, 2}, {10, 2}, {9, 2}, {8, 2}, {7, 2}, {6, 2}, {5, 2}, {4, 2}, {3, 2}, {2, 2}, {1, 2}, {0, 2}},
+  {{11, 3}, {10, 3}, {9, 3}, {8, 3}, {7, 3}, {6, 3}, {5, 3}, {4, 3}, {3, 3}, {2, 3}, {1, 3}, {0, 3}},
+  {{11, 4}, {10, 4}, {9, 4}, {8, 4}, {7, 4}, {6, 4}, {5, 4}, {4, 4}, {3, 4}, {2, 4}, {1, 4}, {0, 4}},
+};
+#endif
+
 void matrix_init_kb(void) {
 
     // Turn status LED on
diff --git a/keyboards/readme.md b/keyboards/readme.md
index f6c90b1f..4f179621 100644
--- a/keyboards/readme.md
+++ b/keyboards/readme.md
@@ -39,6 +39,7 @@ These keyboards are part of the QMK repository, but their manufacturers are not
 * [hhkb](/keyboards/hhkb) &mdash; The Happy Hacking keyboard can be hacked with a custom controller to run QMK.
 * [jd45](/keyboards/jd45) &mdash; Another Geekhack community project, designed by jdcarpe.
 * [kc60](/keyboards/kc60) &mdash; A programmable Chinese-made keyboard, lost in the mists of time.
+* [kitten_paw](/keyboards/kitten_paw) &mdash; A replacement controller (2016 revision) for the Filco Majestouch by [Bathroom Epiphanies](https://github.com/BathroomEpiphanies)
 * [phantom](/keyboards/phantom) &mdash; A tenkeyless kit by Teel, also from Geekhack.
 * [retro_refit](/keyboards/retro_refit) &mdash; Another creation by IBNobody.
 * [satan](/keyboards/satan) &mdash; A GH60 variant.
diff --git a/keyboards/tv44/tv44.h b/keyboards/tv44/tv44.h
index 4c30174a..65c0b459 100644
--- a/keyboards/tv44/tv44.h
+++ b/keyboards/tv44/tv44.h
@@ -11,7 +11,7 @@
     K00, K01, K02, K03, K04, K05, K06, K07, K08, K09, K0A, K0B, \
     K10, K11, K12, K13, K14, K15, K16, K17, K18, K19, K1A, K1B, \
     K20, K21, K22, K23, K24, K25, K26, K27, K28, K29, K2A, K2B, \
-    K30, K31, K32, K33,           K37, K38,      K39,      K3B  \
+    K30, K31, K32, K33,           K37, K38,      K39, K3A, K3B  \
 ) \
 { \
     { K00,   K01,   K02,   K03,  K04,   K05,   K06,   K07,   K08,   K09,   K0A,   K0B }, \
diff --git a/quantum/process_keycode/process_unicode.c b/quantum/process_keycode/process_unicode.c
index 72c809c3..a1be8d2f 100644
--- a/quantum/process_keycode/process_unicode.c
+++ b/quantum/process_keycode/process_unicode.c
@@ -18,6 +18,7 @@ void set_unicode_input_mode(uint8_t os_target)
   input_mode = os_target;
 }
 
+__attribute__((weak))
 void unicode_input_start (void) {
   switch(input_mode) {
   case UC_OSX:
@@ -40,6 +41,7 @@ void unicode_input_start (void) {
   wait_ms(UNICODE_TYPE_DELAY);
 }
 
+__attribute__((weak))
 void unicode_input_finish (void) {
   switch(input_mode) {
   case UC_OSX:
diff --git a/tmk_core/common.mk b/tmk_core/common.mk
index aa05b949..429c5714 100644
--- a/tmk_core/common.mk
+++ b/tmk_core/common.mk
@@ -85,6 +85,10 @@ ifeq ($(strip $(BLUETOOTH_ENABLE)), yes)
     OPT_DEFS += -DBLUETOOTH_ENABLE
 endif
 
+ifeq ($(strip $(ONEHAND_ENABLE)), yes)
+    OPT_DEFS += -DONEHAND_ENABLE
+endif
+
 ifeq ($(strip $(KEYMAP_SECTION_ENABLE)), yes)
     OPT_DEFS += -DKEYMAP_SECTION_ENABLE
 
diff --git a/tmk_core/common/action.c b/tmk_core/common/action.c
index be6dea2b..08ef22eb 100644
--- a/tmk_core/common/action.c
+++ b/tmk_core/common/action.c
@@ -41,6 +41,12 @@ void action_exec(keyevent_t event)
         dprint("EVENT: "); debug_event(event); dprintln();
     }
 
+#ifdef ONEHAND_ENABLE
+    if (!IS_NOEVENT(event)) {
+        process_hand_swap(&event);
+    }
+#endif
+
     keyrecord_t record = { .event = event };
 
 #ifndef NO_ACTION_TAPPING
@@ -53,6 +59,26 @@ void action_exec(keyevent_t event)
 #endif
 }
 
+#ifdef ONEHAND_ENABLE
+bool swap_hands = false;
+
+void process_hand_swap(keyevent_t *event) {
+    static swap_state_row_t swap_state[MATRIX_ROWS];
+
+    keypos_t pos = event->key;
+    swap_state_row_t col_bit = (swap_state_row_t)1<<pos.col;
+    bool do_swap = event->pressed ? swap_hands :
+                                    swap_state[pos.row] & (col_bit);
+
+    if (do_swap) {
+        event->key = hand_swap_config[pos.row][pos.col];
+        swap_state[pos.row] |= col_bit;
+    } else {
+        swap_state[pos.row] &= ~(col_bit);
+    }
+}
+#endif
+
 #if !defined(NO_ACTION_LAYER) && defined(PREVENT_STUCK_MODIFIERS)
 bool disable_action_cache = false;
 
@@ -440,6 +466,54 @@ void process_action(keyrecord_t *record, action_t action)
 #endif
         case ACT_COMMAND:
             break;
+#ifdef ONEHAND_ENABLE
+        case ACT_SWAP_HANDS:
+            switch (action.swap.code) {
+                case OP_SH_TOGGLE:
+                    if (event.pressed) {
+                        swap_hands = !swap_hands;
+                    }
+                    break;
+                case OP_SH_ON_OFF:
+                    swap_hands = event.pressed;
+                    break;
+                case OP_SH_OFF_ON:
+                    swap_hands = !event.pressed;
+                    break;
+                case OP_SH_ON:
+                    if (!event.pressed) {
+                        swap_hands = true;
+                    }
+                    break;
+                case OP_SH_OFF:
+                    if (!event.pressed) {
+                        swap_hands = false;
+                    }
+                    break;
+    #ifndef NO_ACTION_TAPPING
+                case OP_SH_TAP_TOGGLE:
+                    /* tap toggle */
+                    if (tap_count > 0) {
+                        if (!event.pressed) {
+                            swap_hands = !swap_hands;
+                        }
+                    } else {
+                        swap_hands = event.pressed;
+                    }
+                    break;
+                default:
+                    if (tap_count > 0) {
+                        if (event.pressed) {
+                            register_code(action.swap.code);
+                        } else {
+                            unregister_code(action.swap.code);
+                        }
+                    } else {
+                        swap_hands = event.pressed;
+                    }
+    #endif
+            }
+#endif
 #ifndef NO_ACTION_FUNCTION
         case ACT_FUNCTION:
             action_function(record, action.func.id, action.func.opt);
@@ -652,6 +726,13 @@ bool is_tap_key(keypos_t key)
                     return true;
             }
             return false;
+        case ACT_SWAP_HANDS:
+            switch (action.swap.code) {
+                case 0x00 ... 0xdf:
+                case OP_SH_TAP_TOGGLE:
+                    return true;
+            }
+            return false;
         case ACT_MACRO:
         case ACT_FUNCTION:
             if (action.func.opt & FUNC_TAP) { return true; }
@@ -692,6 +773,7 @@ void debug_action(action_t action)
         case ACT_MACRO:             dprint("ACT_MACRO");             break;
         case ACT_COMMAND:           dprint("ACT_COMMAND");           break;
         case ACT_FUNCTION:          dprint("ACT_FUNCTION");          break;
+        case ACT_SWAP_HANDS:        dprint("ACT_SWAP_HANDS");        break;
         default:                    dprint("UNKNOWN");               break;
     }
     dprintf("[%X:%02X]", action.kind.param>>8, action.kind.param&0xff);
diff --git a/tmk_core/common/action.h b/tmk_core/common/action.h
index e8aa12a7..b9bdfe64 100644
--- a/tmk_core/common/action.h
+++ b/tmk_core/common/action.h
@@ -65,6 +65,24 @@ bool process_record_quantum(keyrecord_t *record);
 #if !defined(NO_ACTION_LAYER) && defined(PREVENT_STUCK_MODIFIERS)
 extern bool disable_action_cache;
 #endif
+
+/* Code for handling one-handed key modifiers. */
+#ifdef ONEHAND_ENABLE
+extern bool swap_hands;
+extern const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS];
+#if (MATRIX_COLS <= 8)
+typedef  uint8_t    swap_state_row_t;
+#elif (MATRIX_COLS <= 16)
+typedef  uint16_t   swap_state_row_t;
+#elif (MATRIX_COLS <= 32)
+typedef  uint32_t   swap_state_row_t;
+#else
+#error "MATRIX_COLS: invalid value"
+#endif
+
+void process_hand_swap(keyevent_t *record);
+#endif
+
 void process_record_nocache(keyrecord_t *record);
 void process_record(keyrecord_t *record);
 void process_action(keyrecord_t *record, action_t action);
diff --git a/tmk_core/common/action_code.h b/tmk_core/common/action_code.h
index ca729aae..33da35f3 100644
--- a/tmk_core/common/action_code.h
+++ b/tmk_core/common/action_code.h
@@ -108,6 +108,8 @@ enum action_kind_id {
     /* Other Keys */
     ACT_USAGE           = 0b0100,
     ACT_MOUSEKEY        = 0b0101,
+    /* One-hand Support */
+    ACT_SWAP_HANDS      = 0b0110,
     /* Layer Actions */
     ACT_LAYER           = 0b1000,
     ACT_LAYER_TAP       = 0b1010, /* Layer  0-15 */
@@ -178,6 +180,11 @@ typedef union {
         uint8_t  opt    :4;
         uint8_t  kind   :4;
     } func;
+    struct action_swap {
+        uint8_t  code   :8;
+        uint8_t  opt   :4;
+        uint8_t  kind   :4;
+    } swap;
 } action_t;
 
 
@@ -295,6 +302,7 @@ enum backlight_opt {
     BACKLIGHT_STEP     = 3,
     BACKLIGHT_LEVEL    = 4,
 };
+
 /* Macro */
 #define ACTION_MACRO(id)                ACTION(ACT_MACRO, (id))
 #define ACTION_MACRO_TAP(id)            ACTION(ACT_MACRO, FUNC_TAP<<8 | (id))
@@ -306,7 +314,7 @@ enum backlight_opt {
 #define ACTION_BACKLIGHT_STEP()         ACTION(ACT_BACKLIGHT, BACKLIGHT_STEP << 8)
 #define ACTION_BACKLIGHT_LEVEL(level)   ACTION(ACT_BACKLIGHT, BACKLIGHT_LEVEL << 8 | (level))
 /* Command */
-#define ACTION_COMMAND(id, opt)         ACTION(ACT_COMMAND,  (opt)<<8 | (addr))
+#define ACTION_COMMAND(id, opt)         ACTION(ACT_COMMAND,  (opt)<<8 | (id))
 /* Function */
 enum function_opts {
     FUNC_TAP = 0x8,     /* indciates function is tappable */
@@ -314,5 +322,23 @@ enum function_opts {
 #define ACTION_FUNCTION(id)             ACTION(ACT_FUNCTION, (id))
 #define ACTION_FUNCTION_TAP(id)         ACTION(ACT_FUNCTION, FUNC_TAP<<8 | (id))
 #define ACTION_FUNCTION_OPT(id, opt)    ACTION(ACT_FUNCTION, (opt)<<8 | (id))
+/* OneHand Support */
+enum swap_hands_pram_tap_op {
+    OP_SH_TOGGLE = 0xF0,
+    OP_SH_TAP_TOGGLE,
+    OP_SH_ON_OFF,
+    OP_SH_OFF_ON,
+    OP_SH_OFF,
+    OP_SH_ON,
+};
+
+#define ACTION_SWAP_HANDS()             ACTION_SWAP_HANDS_ON_OFF()
+#define ACTION_SWAP_HANDS_TOGGLE()      ACTION(ACT_SWAP_HANDS, OP_SH_TOGGLE)
+#define ACTION_SWAP_HANDS_TAP_TOGGLE()  ACTION(ACT_SWAP_HANDS, OP_SH_TAP_TOGGLE)
+#define ACTION_SWAP_HANDS_TAP_KEY(key)  ACTION(ACT_SWAP_HANDS, key)
+#define ACTION_SWAP_HANDS_ON_OFF()      ACTION(ACT_SWAP_HANDS, OP_SH_ON_OFF)
+#define ACTION_SWAP_HANDS_OFF_ON()      ACTION(ACT_SWAP_HANDS, OP_SH_OFF_ON)
+#define ACTION_SWAP_HANDS_ON()          ACTION(ACT_SWAP_HANDS, OP_SH_ON)
+#define ACTION_SWAP_HANDS_OFF()         ACTION(ACT_SWAP_HANDS, OP_SH_OFF)
 
 #endif /* ACTION_CODE_H */
diff --git a/tmk_core/common/virtser.h b/tmk_core/common/virtser.h
new file mode 100644
index 00000000..74891b6a
--- /dev/null
+++ b/tmk_core/common/virtser.h
@@ -0,0 +1,10 @@
+#ifndef _VIRTSER_H_
+#define _VIRTSER_H_
+
+/* Define this function in your code to process incoming bytes */
+void virtser_recv(const uint8_t ch);
+
+/* Call this to send a character over the Virtual Serial Device */
+void virtser_send(const uint8_t byte);
+
+#endif
diff --git a/tmk_core/protocol/lufa.mk b/tmk_core/protocol/lufa.mk
index 0eeace44..5b1e3d19 100644
--- a/tmk_core/protocol/lufa.mk
+++ b/tmk_core/protocol/lufa.mk
@@ -26,6 +26,10 @@ ifeq ($(strip $(BLUETOOTH_ENABLE)), yes)
 	$(TMK_DIR)/protocol/serial_uart.c
 endif
 
+ifeq ($(strip $(VIRTSER_ENABLE)), yes)
+	LUFA_SRC += $(LUFA_ROOT_PATH)/Drivers/USB/Class/Device/CDCClassDevice.c
+endif
+
 SRC += $(LUFA_SRC)
 
 # Search Path
diff --git a/tmk_core/protocol/lufa/descriptor.c b/tmk_core/protocol/lufa/descriptor.c
index 539a58d6..6f2407f5 100644
--- a/tmk_core/protocol/lufa/descriptor.c
+++ b/tmk_core/protocol/lufa/descriptor.c
@@ -231,9 +231,15 @@ const USB_Descriptor_Device_t PROGMEM DeviceDescriptor =
     .Header                 = {.Size = sizeof(USB_Descriptor_Device_t), .Type = DTYPE_Device},
 
     .USBSpecification       = VERSION_BCD(1,1,0),
+#if VIRTSER_ENABLE
+    .Class                  = USB_CSCP_IADDeviceClass,
+    .SubClass               = USB_CSCP_IADDeviceSubclass,
+    .Protocol               = USB_CSCP_IADDeviceProtocol,
+#else
     .Class                  = USB_CSCP_NoDeviceClass,
     .SubClass               = USB_CSCP_NoDeviceSubclass,
     .Protocol               = USB_CSCP_NoDeviceProtocol,
+#endif
 
     .Endpoint0Size          = FIXED_CONTROL_ENDPOINT_SIZE,
 
@@ -643,8 +649,112 @@ const USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 
             .TotalEmbeddedJacks       = 0x01,
             .AssociatedJackID         = {0x03}
-        }
+        },
 #endif
+
+#ifdef VIRTSER_ENABLE
+    .CDC_Interface_Association =
+            {
+                    .Header                 = {.Size = sizeof(USB_Descriptor_Interface_Association_t), .Type = DTYPE_InterfaceAssociation},
+
+                    .FirstInterfaceIndex    = CCI_INTERFACE,
+                    .TotalInterfaces        = 2,
+
+                    .Class                  = CDC_CSCP_CDCClass,
+                    .SubClass               = CDC_CSCP_ACMSubclass,
+                    .Protocol               = CDC_CSCP_ATCommandProtocol,
+
+                    .IADStrIndex            = NO_DESCRIPTOR,
+            },
+
+    .CDC_CCI_Interface =
+            {
+                    .Header                 = {.Size = sizeof(USB_Descriptor_Interface_t), .Type = DTYPE_Interface},
+
+                    .InterfaceNumber        = CCI_INTERFACE,
+                    .AlternateSetting       = 0,
+
+                    .TotalEndpoints         = 1,
+
+                    .Class                  = CDC_CSCP_CDCClass,
+                    .SubClass               = CDC_CSCP_ACMSubclass,
+                    .Protocol               = CDC_CSCP_ATCommandProtocol,
+
+                    .InterfaceStrIndex      = NO_DESCRIPTOR
+            },
+
+    .CDC_Functional_Header =
+            {
+                    .Header                 = {.Size = sizeof(USB_CDC_Descriptor_FunctionalHeader_t), .Type = DTYPE_CSInterface},
+                    .Subtype                = 0x00,
+
+                    .CDCSpecification       = VERSION_BCD(1,1,0),
+            },
+
+    .CDC_Functional_ACM =
+            {
+                    .Header                 = {.Size = sizeof(USB_CDC_Descriptor_FunctionalACM_t), .Type = DTYPE_CSInterface},
+                    .Subtype                = 0x02,
+
+                    .Capabilities           = 0x02,
+            },
+
+    .CDC_Functional_Union =
+            {
+                    .Header                 = {.Size = sizeof(USB_CDC_Descriptor_FunctionalUnion_t), .Type = DTYPE_CSInterface},
+                    .Subtype                = 0x06,
+
+                    .MasterInterfaceNumber  = CCI_INTERFACE,
+                    .SlaveInterfaceNumber   = CDI_INTERFACE,
+            },
+
+    .CDC_NotificationEndpoint =
+            {
+                    .Header                 = {.Size = sizeof(USB_Descriptor_Endpoint_t), .Type = DTYPE_Endpoint},
+
+                    .EndpointAddress        = CDC_NOTIFICATION_EPADDR,
+                    .Attributes             = (EP_TYPE_INTERRUPT | ENDPOINT_ATTR_NO_SYNC | ENDPOINT_USAGE_DATA),
+                    .EndpointSize           = CDC_NOTIFICATION_EPSIZE,
+                    .PollingIntervalMS      = 0xFF
+            },
+
+    .CDC_DCI_Interface =
+            {
+                    .Header                 = {.Size = sizeof(USB_Descriptor_Interface_t), .Type = DTYPE_Interface},
+
+                    .InterfaceNumber        = CDI_INTERFACE,
+                    .AlternateSetting       = 0,
+
+                    .TotalEndpoints         = 2,
+
+                    .Class                  = CDC_CSCP_CDCDataClass,
+                    .SubClass               = CDC_CSCP_NoDataSubclass,
+                    .Protocol               = CDC_CSCP_NoDataProtocol,
+
+                    .InterfaceStrIndex      = NO_DESCRIPTOR
+            },
+
+    .CDC_DataOutEndpoint =
+            {
+                    .Header                 = {.Size = sizeof(USB_Descriptor_Endpoint_t), .Type = DTYPE_Endpoint},
+
+                    .EndpointAddress        = CDC_OUT_EPADDR,
+                    .Attributes             = (EP_TYPE_BULK | ENDPOINT_ATTR_NO_SYNC | ENDPOINT_USAGE_DATA),
+                    .EndpointSize           = CDC_EPSIZE,
+                    .PollingIntervalMS      = 0x05
+            },
+
+    .CDC_DataInEndpoint =
+            {
+                    .Header                 = {.Size = sizeof(USB_Descriptor_Endpoint_t), .Type = DTYPE_Endpoint},
+
+                    .EndpointAddress        = CDC_IN_EPADDR,
+                    .Attributes             = (EP_TYPE_BULK | ENDPOINT_ATTR_NO_SYNC | ENDPOINT_USAGE_DATA),
+                    .EndpointSize           = CDC_EPSIZE,
+                    .PollingIntervalMS      = 0x05
+            },
+#endif
+
 };
 
 
diff --git a/tmk_core/protocol/lufa/descriptor.h b/tmk_core/protocol/lufa/descriptor.h
index 4fd81a0e..316650a7 100644
--- a/tmk_core/protocol/lufa/descriptor.h
+++ b/tmk_core/protocol/lufa/descriptor.h
@@ -104,6 +104,21 @@ typedef struct
       USB_MIDI_Descriptor_Jack_Endpoint_t       MIDI_Out_Jack_Endpoint_SPC;
 #endif
 
+#ifdef VIRTSER_ENABLE
+        USB_Descriptor_Interface_Association_t   CDC_Interface_Association;
+
+	// CDC Control Interface
+	USB_Descriptor_Interface_t               CDC_CCI_Interface;
+	USB_CDC_Descriptor_FunctionalHeader_t    CDC_Functional_Header;
+	USB_CDC_Descriptor_FunctionalACM_t       CDC_Functional_ACM;
+	USB_CDC_Descriptor_FunctionalUnion_t     CDC_Functional_Union;
+	USB_Descriptor_Endpoint_t                CDC_NotificationEndpoint;
+
+	// CDC Data Interface
+	USB_Descriptor_Interface_t               CDC_DCI_Interface;
+	USB_Descriptor_Endpoint_t                CDC_DataOutEndpoint;
+	USB_Descriptor_Endpoint_t                CDC_DataInEndpoint;
+#endif
 } USB_Descriptor_Configuration_t;
 
 
@@ -141,8 +156,15 @@ typedef struct
 #   define AS_INTERFACE           NKRO_INTERFACE
 #endif
 
+#ifdef VIRTSER_ENABLE
+#   define CCI_INTERFACE         (AS_INTERFACE + 1)
+#   define CDI_INTERFACE         (AS_INTERFACE + 2)
+#else
+#   define CDI_INTERFACE         AS_INTERFACE
+#endif
+
 /* nubmer of interfaces */
-#define TOTAL_INTERFACES            AS_INTERFACE + 1
+#define TOTAL_INTERFACES            (CDI_INTERFACE + 1)
 
 
 // Endopoint number and size
@@ -180,11 +202,24 @@ typedef struct
 #   define MIDI_STREAM_OUT_EPNUM    (NKRO_IN_EPNUM + 2)
 #   define MIDI_STREAM_IN_EPADDR    (ENDPOINT_DIR_IN | MIDI_STREAM_IN_EPNUM)
 #   define MIDI_STREAM_OUT_EPADDR   (ENDPOINT_DIR_OUT | MIDI_STREAM_OUT_EPNUM)
+#else
+#   define MIDI_STREAM_OUT_EPNUM     NKRO_IN_EPNUM
+#endif
+
+#ifdef VIRTSER_ENABLE
+#   define CDC_NOTIFICATION_EPNUM   (MIDI_STREAM_OUT_EPNUM + 1)
+#   define CDC_IN_EPNUM		    (MIDI_STREAM_OUT_EPNUM + 2)
+#   define CDC_OUT_EPNUM		    (MIDI_STREAM_OUT_EPNUM + 3)
+#   define CDC_NOTIFICATION_EPADDR        (ENDPOINT_DIR_IN | CDC_NOTIFICATION_EPNUM)
+#   define CDC_IN_EPADDR                  (ENDPOINT_DIR_IN | CDC_IN_EPNUM)
+#   define CDC_OUT_EPADDR                  (ENDPOINT_DIR_OUT | CDC_OUT_EPNUM)
+#else
+#   define CDC_OUT_EPNUM	MIDI_STREAM_OUT_EPNUM
 #endif
 
 
-#if defined(__AVR_ATmega32U2__) && MIDI_STREAM_OUT_EPADDR > 4
-# error "Endpoints are not available enough to support all functions. Remove some in Makefile.(MOUSEKEY, EXTRAKEY, CONSOLE, NKRO, MIDI)"
+#if defined(__AVR_ATmega32U2__) && CDC_OUT_EPNUM > 4
+# error "Endpoints are not available enough to support all functions. Remove some in Makefile.(MOUSEKEY, EXTRAKEY, CONSOLE, NKRO, MIDI, SERIAL)"
 #endif
 
 #define KEYBOARD_EPSIZE             8
@@ -193,6 +228,8 @@ typedef struct
 #define CONSOLE_EPSIZE              32
 #define NKRO_EPSIZE                 16
 #define MIDI_STREAM_EPSIZE          64
+#define CDC_NOTIFICATION_EPSIZE     8
+#define CDC_EPSIZE                  16
 
 
 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
diff --git a/tmk_core/protocol/lufa/lufa.c b/tmk_core/protocol/lufa/lufa.c
index 9ca55dbc..9b201374 100644
--- a/tmk_core/protocol/lufa/lufa.c
+++ b/tmk_core/protocol/lufa/lufa.c
@@ -60,6 +60,10 @@
     #include "bluetooth.h"
 #endif
 
+#ifdef VIRTSER_ENABLE
+    #include "virtser.h"
+#endif
+
 uint8_t keyboard_idle = 0;
 /* 0: Boot Protocol, 1: Report Protocol(default) */
 uint8_t keyboard_protocol = 1;
@@ -127,6 +131,34 @@ USB_ClassInfo_MIDI_Device_t USB_MIDI_Interface =
 #define SYS_COMMON_3 0x30
 #endif
 
+#ifdef VIRTSER_ENABLE
+USB_ClassInfo_CDC_Device_t cdc_device =
+{
+  .Config =
+  {
+    .ControlInterfaceNumber = CCI_INTERFACE,
+    .DataINEndpoint         =
+    {
+      .Address		= CDC_IN_EPADDR,
+      .Size		= CDC_EPSIZE,
+      .Banks		= 1,
+    },
+    .DataOUTEndpoint	    =
+    {
+      .Address		= CDC_OUT_EPADDR,
+      .Size		= CDC_EPSIZE,
+      .Banks		= 1,
+    },
+    .NotificationEndpoint   =
+    {
+      .Address		= CDC_NOTIFICATION_EPADDR,
+      .Size		= CDC_NOTIFICATION_EPSIZE,
+      .Banks		= 1,
+    },
+  },
+};
+#endif
+
 
 /*******************************************************************************
  * Console
@@ -311,6 +343,12 @@ void EVENT_USB_Device_ConfigurationChanged(void)
     ConfigSuccess &= Endpoint_ConfigureEndpoint(MIDI_STREAM_IN_EPADDR, EP_TYPE_BULK, MIDI_STREAM_EPSIZE, ENDPOINT_BANK_SINGLE);
     ConfigSuccess &= Endpoint_ConfigureEndpoint(MIDI_STREAM_OUT_EPADDR, EP_TYPE_BULK, MIDI_STREAM_EPSIZE, ENDPOINT_BANK_SINGLE);
 #endif
+
+#ifdef VIRTSER_ENABLE
+    ConfigSuccess &= Endpoint_ConfigureEndpoint(CDC_NOTIFICATION_EPADDR, EP_TYPE_INTERRUPT, CDC_NOTIFICATION_EPSIZE, ENDPOINT_BANK_SINGLE);
+    ConfigSuccess &= Endpoint_ConfigureEndpoint(CDC_OUT_EPADDR, EP_TYPE_BULK, CDC_EPSIZE, ENDPOINT_BANK_SINGLE);
+    ConfigSuccess &= Endpoint_ConfigureEndpoint(CDC_IN_EPADDR, EP_TYPE_BULK, CDC_EPSIZE, ENDPOINT_BANK_SINGLE);
+#endif
 }
 
 /*
@@ -432,10 +470,15 @@ void EVENT_USB_Device_ControlRequest(void)
 
             break;
     }
+
+#ifdef VIRTSER_ENABLE
+    CDC_Device_ProcessControlRequest(&cdc_device);
+#endif
 }
 
 /*******************************************************************************
  * Host driver
+p
  ******************************************************************************/
 static uint8_t keyboard_leds(void)
 {
@@ -827,6 +870,61 @@ void MIDI_Task(void)
 
 #endif
 
+/*******************************************************************************
+ * VIRTUAL SERIAL
+ ******************************************************************************/
+
+#ifdef VIRTSER_ENABLE
+void virtser_init(void)
+{
+  cdc_device.State.ControlLineStates.DeviceToHost = CDC_CONTROL_LINE_IN_DSR ;
+  CDC_Device_SendControlLineStateChange(&cdc_device);
+}
+
+void virtser_recv(uint8_t c) __attribute__ ((weak));
+void virtser_recv(uint8_t c)
+{
+  // Ignore by default
+}
+
+void virtser_task(void)
+{
+  uint16_t count = CDC_Device_BytesReceived(&cdc_device);
+  uint8_t ch;
+  if (count)
+  {
+    ch = CDC_Device_ReceiveByte(&cdc_device);
+    virtser_recv(ch);
+  }
+}
+void virtser_send(const uint8_t byte)
+{
+  uint8_t timeout = 255;
+  uint8_t ep = Endpoint_GetCurrentEndpoint();
+
+  if (cdc_device.State.ControlLineStates.HostToDevice & CDC_CONTROL_LINE_OUT_DTR)
+  {
+    /* IN packet */
+    Endpoint_SelectEndpoint(cdc_device.Config.DataINEndpoint.Address);
+
+    if (!Endpoint_IsEnabled() || !Endpoint_IsConfigured()) {
+        Endpoint_SelectEndpoint(ep);
+        return;
+    }
+
+    while (timeout-- && !Endpoint_IsReadWriteAllowed()) _delay_us(40);
+
+    Endpoint_Write_8(byte);
+    CDC_Device_Flush(&cdc_device);
+
+    if (Endpoint_IsINReady()) {
+      Endpoint_ClearIN();
+    }
+
+    Endpoint_SelectEndpoint(ep);
+  }
+}
+#endif
 
 /*******************************************************************************
  * main
@@ -918,6 +1016,10 @@ int main(void)
     sleep_led_init();
 #endif
 
+#ifdef VIRTSER_ENABLE
+    virtser_init();
+#endif
+
     print("Keyboard start.\n");
     while (1) {
         #ifndef BLUETOOTH_ENABLE
@@ -936,6 +1038,11 @@ int main(void)
 #endif
         keyboard_task();
 
+#ifdef VIRTSER_ENABLE
+        virtser_task();
+        CDC_Device_USBTask(&cdc_device);
+#endif
+
 #if !defined(INTERRUPT_CONTROL_ENDPOINT)
         USB_USBTask();
 #endif