[Keyboard] Doppelganger (#7682)

* Initial commit

* Update info.json

* Update doppelganger.c

* Update keyboards/doppelganger/readme.md

* Update keyboards/doppelganger/readme.md

* Update keyboards/doppelganger/readme.md

* Update keyboards/doppelganger/rules.mk

* Update keyboards/doppelganger/rules.mk

* Update keyboards/doppelganger/rules.mk

* Update keyboards/doppelganger/rules.mk

* More fixes my g:)

* Update keyboards/doppelganger/rules.mk

* Update keyboards/doppelganger/rules.mk

* More prettying

* Update rules.mk

* Minor spacing

* Init pins

* Update rules.mk

* Update keyboards/doppelganger/info.json

8 files changed, 409 insertions, 0 deletions

diff --git a/keyboards/doppelganger/config.h b/keyboards/doppelganger/config.h
new file mode 100644
index 0000000000..c19fa51790
--- /dev/null
+++ b/keyboards/doppelganger/config.h
@@ -0,0 +1,229 @@
+/*
+Copyright 2019 Yiancar-Designs
+
+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/>.
+*/
+
+#pragma once
+
+#include "config_common.h"
+
+/* USB Device descriptor parameter */
+#define VENDOR_ID       0x8968
+#define PRODUCT_ID      0x4447
+#define DEVICE_VER      0x0001
+#define MANUFACTURER    Yiancar-Designs
+#define PRODUCT         Doppelganger
+#define DESCRIPTION     A custom split keyboard
+
+/* key matrix size */
+#define MATRIX_ROWS 10
+#define MATRIX_COLS 9
+
+/*
+ * 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 SPLIT_HAND_PIN D4
+
+#define MATRIX_ROW_PINS { E6, F1, C7, F7, F6 }
+#define MATRIX_COL_PINS { F4, F0, B7, B3, B2, B1, D5, D3, D2 }
+#define UNUSED_PINS
+
+#define MATRIX_ROW_PINS_RIGHT { D7, D6, D4, E6, B5 }
+#define MATRIX_COL_PINS_RIGHT { F1, F0, F4, F5, F6, F7, C7, C6, B6 }
+
+/* COL2ROW, ROW2COL*/
+#define DIODE_DIRECTION COL2ROW
+
+/*
+ * Split Keyboard specific options, make sure you have 'SPLIT_KEYBOARD = yes' in your rules.mk, and define SOFT_SERIAL_PIN.
+ */
+// #define USE_I2C
+#define SOFT_SERIAL_PIN D1 // or D1, D2, D3, E6
+
+// #define BACKLIGHT_PIN B7
+// #define BACKLIGHT_BREATHING
+// #define BACKLIGHT_LEVELS 3
+
+#define RGB_DI_PIN B4
+// #ifdef RGB_DI_PIN
+#define RGBLED_NUM 2
+#define RGBLIGHT_SPLIT
+#define RGBLED_SPLIT { 1, 1 }
+//   #define RGBLIGHT_HUE_STEP 8
+//   #define RGBLIGHT_SAT_STEP 8
+//   #define RGBLIGHT_VAL_STEP 8
+//   #define RGBLIGHT_LIMIT_VAL 255 /* The maximum brightness level */
+//   #define RGBLIGHT_SLEEP  /* If defined, the RGB lighting will be switched off when the host goes to sleep */
+// /*== all animations enable ==*/
+//   #define RGBLIGHT_ANIMATIONS
+// /*== or choose animations ==*/
+//   #define RGBLIGHT_EFFECT_BREATHING
+//   #define RGBLIGHT_EFFECT_RAINBOW_MOOD
+//   #define RGBLIGHT_EFFECT_RAINBOW_SWIRL
+//   #define RGBLIGHT_EFFECT_SNAKE
+//   #define RGBLIGHT_EFFECT_KNIGHT
+//   #define RGBLIGHT_EFFECT_CHRISTMAS
+//   #define RGBLIGHT_EFFECT_STATIC_GRADIENT
+//   #define RGBLIGHT_EFFECT_RGB_TEST
+//   #define RGBLIGHT_EFFECT_ALTERNATING
+// /*== customize breathing effect ==*/
+//   /*==== (DEFAULT) use fixed table instead of exp() and sin() ====*/
+//   #define RGBLIGHT_BREATHE_TABLE_SIZE 256      // 256(default) or 128 or 64
+//   /*==== use exp() and sin() ====*/
+//   #define RGBLIGHT_EFFECT_BREATHE_CENTER 1.85  // 1 to 2.7
+//   #define RGBLIGHT_EFFECT_BREATHE_MAX    255   // 0 to 255
+// #endif
+
+/* Debounce reduces chatter (unintended double-presses) - set 0 if debouncing is not needed */
+#define DEBOUNCE 5
+
+/* define if matrix has ghost (lacks anti-ghosting diodes) */
+//#define MATRIX_HAS_GHOST
+
+/* 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
+
+/* If defined, GRAVE_ESC will always act as ESC when CTRL is held.
+ * This is userful for the Windows task manager shortcut (ctrl+shift+esc).
+ */
+// #define GRAVE_ESC_CTRL_OVERRIDE
+
+/*
+ * 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 */
+/* defined by default; to change, uncomment and set to the combination you want */
+// #define IS_COMMAND() (get_mods() == MOD_MASK_SHIFT)
+
+/* 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_HELP           H
+//#define MAGIC_KEY_HELP_ALT       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         0
+//#define MAGIC_KEY_LAYER0_ALT     GRAVE
+//#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     B
+//#define MAGIC_KEY_BOOTLOADER_ALT ESC
+//#define MAGIC_KEY_LOCK           CAPS
+//#define MAGIC_KEY_EEPROM         E
+//#define MAGIC_KEY_EEPROM_CLEAR   BSPACE
+//#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
+
+/*
+ * MIDI options
+ */
+
+/* Prevent use of disabled MIDI features in the keymap */
+//#define MIDI_ENABLE_STRICT 1
+
+/* enable basic MIDI features:
+   - MIDI notes can be sent when in Music mode is on
+*/
+//#define MIDI_BASIC
+
+/* enable advanced MIDI features:
+   - MIDI notes can be added to the keymap
+   - Octave shift and transpose
+   - Virtual sustain, portamento, and modulation wheel
+   - etc.
+*/
+//#define MIDI_ADVANCED
+
+/* override number of MIDI tone keycodes (each octave adds 12 keycodes and allocates 12 bytes) */
+//#define MIDI_TONE_KEYCODE_OCTAVES 1
+
+/* Bootmagic Lite key configuration */
+#define BOOTMAGIC_LITE_ROW 0
+#define BOOTMAGIC_LITE_COLUMN 2
diff --git a/keyboards/doppelganger/doppelganger.c b/keyboards/doppelganger/doppelganger.c
new file mode 100644
index 0000000000..04d19480da
--- /dev/null
+++ b/keyboards/doppelganger/doppelganger.c
@@ -0,0 +1,39 @@
+/* Copyright 2019 Yiancar-Designs
+ *
+ * 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 "doppelganger.h"
+
+void keyboard_pre_init_kb (void) {
+  setPinOutput(C6);
+  setPinOutput(B0);
+}
+
+bool led_update_kb(led_t led_state) {
+  bool res = led_update_user(led_state);
+  if(res) {
+    // writePin sets the pin high for 1 and low for 0.
+    // In this example the pins are inverted, setting
+    // it low/0 turns it on, and high/1 turns the LED off.
+    // This behavior depends on whether the LED is between the pin
+    // and VCC or the pin and GND.
+    writePin(C6, !led_state.caps_lock);
+  }
+  return res;
+}
+
+__attribute__((weak)) layer_state_t layer_state_set_user(layer_state_t state) {
+  writePin(B0, !(state & (1UL << 1)));
+  return state;
+}
diff --git a/keyboards/doppelganger/doppelganger.h b/keyboards/doppelganger/doppelganger.h
new file mode 100644
index 0000000000..c065c28c46
--- /dev/null
+++ b/keyboards/doppelganger/doppelganger.h
@@ -0,0 +1,46 @@
+/* Copyright 2019 Yiancar-Designs
+ *
+ * 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/>.
+ */
+#pragma once
+
+#include "quantum.h"
+
+/* This a shortcut to help you visually see your layout.
+ *
+ * The first section contains all of the arguments representing the physical
+ * layout of the board and position of the keys.
+ *
+ * The second converts the arguments into a two-dimensional array which
+ * represents the switch matrix.
+ */
+#define LAYOUT( \
+          L01,    L02,  L03,  L04,  L05,  L06,  L07,  L08,      R00,  R01,  R02,  R03,  R04,  R05,  R06,  R07, \
+    L10,  L11,    L12,  L13,  L14,  L15,  L16,  L17,            R10,  R11,  R12,  R13,  R14,  R15,  R16,  R17,    R18, \
+    L20,  L21,    L22,  L23,  L24,  L25,  L26,  L27,            R20,  R21,  R22,  R23,  R24,  R25,  R26,  R27,    R28, \
+    L30,  L31,    L32,  L33,  L34,  L35,  L36,  L37,  L38,            R31,  R32,  R33,  R34,  R35,  R36,  R37,    R38, \
+    L40,  L41,    L42,  L43,  L44,     L45,     L46,                  R42,        R43,  R44,  R45,  R46,  R47,  R48 \
+) \
+{ \
+    { KC_NO, L01,   L02, L03, L04, L05, L06,   L07,   L08 }, \
+    {   L10, L11,   L12, L13, L14, L15, L16,   L17, KC_NO }, \
+    {   L20, L21,   L22, L23, L24, L25, L26,   L27, KC_NO }, \
+    {   L30, L31,   L32, L33, L34, L35, L36,   L37,   L38 }, \
+    {   L40, L41,   L42, L43, L44, L45, L46, KC_NO, KC_NO }, \
+    {   R00, R01,   R02, R03, R04, R05, R06,   R07, KC_NO }, \
+    {   R10, R11,   R12, R13, R14, R15, R16,   R17,   R18 }, \
+    {   R20, R21,   R22, R23, R24, R25, R26,   R27,   R28 }, \
+    { KC_NO, R31,   R32, R33, R34, R35, R36,   R37,   R38 }, \
+    { KC_NO, KC_NO, R42, R43, R44, R45, R46,   R47,   R48 }, \
+}
diff --git a/keyboards/doppelganger/info.json b/keyboards/doppelganger/info.json
new file mode 100644
index 0000000000..4de98961a4
--- /dev/null
+++ b/keyboards/doppelganger/info.json
@@ -0,0 +1,12 @@
+{
+    "keyboard_name": "Doppelganger", 
+    "url": "", 
+    "maintainer": "yiancar", 
+    "width": 20, 
+    "height": 5.25, 
+    "layouts": {
+        "LAYOUT": {
+            "layout": [{"label":"F1", "x":1, "y":0}, {"label":"Esc", "x":2.5, "y":0}, {"label":"1", "x":3.5, "y":0}, {"label":"2", "x":4.5, "y":0}, {"label":"3", "x":5.5, "y":0}, {"label":"4", "x":6.5, "y":0}, {"label":"5", "x":7.5, "y":0}, {"label":"6", "x":8.5, "y":0}, {"label":"7", "x":10.5, "y":0}, {"label":"8", "x":11.5, "y":0}, {"label":"9", "x":12.5, "y":0}, {"label":"0", "x":13.5, "y":0}, {"label":"_", "x":14.5, "y":0}, {"label":"+", "x":15.5, "y":0}, {"x":16.5, "y":0}, {"x":17.5, "y":0}, {"label":"F2", "x":0, "y":1}, {"label":"F3", "x":1, "y":1}, {"label":"Tab", "x":2.5, "y":1, "w":1.5}, {"label":"Q", "x":4, "y":1}, {"label":"W", "x":5, "y":1}, {"label":"E", "x":6, "y":1}, {"label":"R", "x":7, "y":1}, {"label":"T", "x":8, "y":1}, {"label":"Y", "x":10, "y":1}, {"label":"U", "x":11, "y":1}, {"label":"I", "x":12, "y":1}, {"label":"O", "x":13, "y":1}, {"label":"P", "x":14, "y":1}, {"label":"{", "x":15, "y":1}, {"label":"}", "x":16, "y":1}, {"label":"|", "x":17, "y":1, "w":1.5}, {"label":"Pg Up", "x":19, "y":1}, {"label":"F4", "x":0, "y":2}, {"label":"F5", "x":1, "y":2}, {"label":"Caps Lock", "x":2.5, "y":2, "w":1.75}, {"label":"A", "x":4.25, "y":2}, {"label":"S", "x":5.25, "y":2}, {"label":"D", "x":6.25, "y":2}, {"label":"F", "x":7.25, "y":2}, {"label":"G", "x":8.25, "y":2}, {"label":"H", "x":10.25, "y":2}, {"label":"J", "x":11.25, "y":2}, {"label":"K", "x":12.25, "y":2}, {"label":"L", "x":13.25, "y":2}, {"label":":", "x":14.25, "y":2}, {"label":"\"", "x":15.25, "y":2}, {"label":"~", "x":16.25, "y":2}, {"label":"Enter", "x":17.25, "y":2, "w":1.25}, {"label":"Pg Dn", "x":19, "y":2}, {"label":"F6", "x":0, "y":3}, {"label":"F7", "x":1, "y":3}, {"label":"Shift", "x":2.5, "y":3, "w":1.25}, {"label":"|", "x":3.75, "y":3}, {"label":"Z", "x":4.75, "y":3}, {"label":"X", "x":5.75, "y":3}, {"label":"C", "x":6.75, "y":3}, {"label":"V", "x":7.75, "y":3}, {"label":"B", "x":8.75, "y":3}, {"label":"N", "x":10.75, "y":3}, {"label":"M", "x":11.75, "y":3}, {"label":"<", "x":12.75, "y":3}, {"label":">", "x":13.75, "y":3}, {"label":"?", "x":14.75, "y":3}, {"label":"Shift", "x":15.75, "y":3, "w":1.75}, {"label":"Up", "x":17.75, "y":3.25}, {"label":"Fn", "x":19, "y":3}, {"label":"F8", "x":0, "y":4}, {"label":"F9", "x":1, "y":4}, {"label":"Ctrl", "x":2.5, "y":4, "w":1.25}, {"label":"Win", "x":3.75, "y":4}, {"label":"Alt", "x":4.75, "y":4, "w":1.25}, {"x":6, "y":4, "w":2.25}, {"x":8.25, "y":4}, {"x":10.25, "y":4, "w":2.75}, {"label":"Alt", "x":13, "y":4, "w":1.25}, {"x":14.25, "y":4}, {"label":"Win", "x":15.25, "y":4, "w":1.25}, {"label":"Left", "x":16.75, "y":4.25}, {"label":"Down", "x":17.75, "y":4.25}, {"label":"Right", "x":18.75, "y":4.25}]
+        }
+    }
+}
diff --git a/keyboards/doppelganger/keymaps/default/keymap.c b/keyboards/doppelganger/keymaps/default/keymap.c
new file mode 100644
index 0000000000..dedbd23940
--- /dev/null
+++ b/keyboards/doppelganger/keymaps/default/keymap.c
@@ -0,0 +1,33 @@
+/* Copyright 2019 Yiancar-Designs
+ *
+ * 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 QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+  [0] = LAYOUT( /* Base */
+            KC_F1,  KC_GESC,  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_DEL,
+    KC_F2,  KC_F3,  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_F4,  KC_F5,  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_NUHS, KC_ENT,             KC_PGUP,
+    KC_F6,  KC_F7,  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_PGDN,
+    KC_F8,  KC_F9,  KC_LCTL,  KC_LGUI,  KC_LALT,         KC_SPC,       MO(1),          KC_SPC,          KC_RALT,  KC_RGUI,  KC_RCTL, KC_LEFT,  KC_DOWN,  KC_RGHT
+  ),
+  [1] = LAYOUT( /* FN1 */
+              RGB_TOG,  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,
+    RGB_MOD,  RGB_RMOD, 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,
+    RGB_HUI,  RGB_HUD,  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,
+    RGB_SAI,  RGB_SAD,  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,
+    RGB_VAI,  RGB_VAD,  KC_TRNS,  KC_TRNS,  KC_TRNS,         KC_TRNS,     KC_TRNS,          KC_TRNS,                        KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS
+  ),
+};
diff --git a/keyboards/doppelganger/keymaps/default/readme.md b/keyboards/doppelganger/keymaps/default/readme.md
new file mode 100644
index 0000000000..9e9824f4d4
--- /dev/null
+++ b/keyboards/doppelganger/keymaps/default/readme.md
@@ -0,0 +1 @@
+# The default keymap for doppelganger
diff --git a/keyboards/doppelganger/readme.md b/keyboards/doppelganger/readme.md
new file mode 100644
index 0000000000..52a12942c2
--- /dev/null
+++ b/keyboards/doppelganger/readme.md
@@ -0,0 +1,15 @@
+# Doppelganger
+
+![doppelganger](https://i.imgur.com/5eALJBf.png)
+
+A Split keyboard co-designed with Cable Car designs 
+
+* Keyboard Maintainer: [Yiancar-Designs](https://github.com/yiancar)
+* Hardware Supported: The specific set of pcbs which use 2 ATMEGA-32u4
+* Hardware Availability: Contact Noahf#2971 on discord!
+
+Make example for this keyboard (after setting up your build environment):
+
+    make doppelganger:default
+
+See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).
diff --git a/keyboards/doppelganger/rules.mk b/keyboards/doppelganger/rules.mk
new file mode 100644
index 0000000000..9e1bd63ab0
--- /dev/null
+++ b/keyboards/doppelganger/rules.mk
@@ -0,0 +1,34 @@
+# MCU name
+MCU = atmega32u4
+
+# Bootloader selection
+#   Teensy       halfkay
+#   Pro Micro    caterina
+#   Atmel DFU    atmel-dfu
+#   LUFA DFU     lufa-dfu
+#   QMK DFU      qmk-dfu
+#   ATmega32A    bootloadHID
+#   ATmega328P   USBasp
+BOOTLOADER = atmel-dfu
+
+# Build Options
+#   change yes to no to disable
+#
+BOOTMAGIC_ENABLE = lite      # Virtual DIP switch configuration
+MOUSEKEY_ENABLE = yes       # Mouse keys
+EXTRAKEY_ENABLE = yes       # Audio control and System control
+CONSOLE_ENABLE = no        # Console for debug
+COMMAND_ENABLE = no        # 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
+RGBLIGHT_ENABLE = yes        # Enable keyboard RGB underglow
+MIDI_ENABLE = no            # MIDI support
+UNICODE_ENABLE = no         # Unicode
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
+AUDIO_ENABLE = no           # Audio output on port C6
+FAUXCLICKY_ENABLE = no      # Use buzzer to emulate clicky switches
+HD44780_ENABLE = no         # Enable support for HD44780 based LCDs
+SPLIT_KEYBOARD = yes