rebound rev4, consolodated switch matrix from 5x12 to 7x8 (#9314)

8 files changed, 513 insertions, 0 deletions

diff --git a/keyboards/montsinger/rebound/rebound.h b/keyboards/montsinger/rebound/rebound.h
index 848316a366..6bddfb2c3a 100644
--- a/keyboards/montsinger/rebound/rebound.h
+++ b/keyboards/montsinger/rebound/rebound.h
@@ -24,4 +24,6 @@
     #include "rev2.h"
 #elif defined(KEYBOARD_montsinger_rebound_rev3)
     #include "rev3.h"
+#elif defined(KEYBOARD_montsinger_rebound_rev4)
+    #include "rev4.h"
 #endif
diff --git a/keyboards/montsinger/rebound/rev4/config.h b/keyboards/montsinger/rebound/rev4/config.h
new file mode 100644
index 0000000000..c4fc053ea9
--- /dev/null
+++ b/keyboards/montsinger/rebound/rev4/config.h
@@ -0,0 +1,65 @@
+/*
+Copyright 2020 Ross Montsinger
+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 0xFEED
+#define PRODUCT_ID 0x552F
+#define DEVICE_VER 0x0002
+#define MANUFACTURER Montsinger
+#define PRODUCT Rebound
+#define DESCRIPTION "A conjoined Let's Split"
+
+/* key matrix size */
+
+#define MATRIX_ROWS 8
+#define MATRIX_COLS 7
+
+/*
+ * 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 { D1, D0, D4, C6, F7, F6, F5, F4 }
+#define MATRIX_COL_PINS { D7, E6, B4, B5, B2, B3, B1 }
+#define UNUSED_PINS { B6 }
+
+#define ENCODERS_PAD_A { D2 }
+#define ENCODERS_PAD_B { D3 }
+
+/* COL2ROW, ROW2COL*/
+#define DIODE_DIRECTION ROW2COL
+
+/* Debounce reduces chatter (unintended double-presses) - set 0 if debouncing is not needed */
+#define DEBOUNCE 5
+
+/* Mechanical locking support. Use KC_LCAP, KC_LNUM or KC_LSCR instead in keymap */
+#define LOCKING_SUPPORT_ENABLE
+/* Locking resynchronize hack */
+#define LOCKING_RESYNC_ENABLE
+
+/* Bootmagic Lite key configuration */
+// #define BOOTMAGIC_LITE_ROW 0
+// #define BOOTMAGIC_LITE_COLUMN 0
diff --git a/keyboards/montsinger/rebound/rev4/info.json b/keyboards/montsinger/rebound/rev4/info.json
new file mode 100644
index 0000000000..23893b6c68
--- /dev/null
+++ b/keyboards/montsinger/rebound/rev4/info.json
@@ -0,0 +1,128 @@
+{
+    "keyboard":"montsinger/rebound/rev4",
+    "url": "https://montsinger.net",
+    "maintainer": "rossman360",
+    "width": 13,
+    "height": 4,
+    "layouts": {
+        "LAYOUT_all": {
+            "layout": [
+                {"x":0, "y":0},
+                {"x":1, "y":0},
+                {"x":2, "y":0},
+                {"x":3, "y":0},
+                {"x":4, "y":0},
+                {"x":5, "y":0},
+
+                {"x":7, "y":0},
+                {"x":8, "y":0},
+                {"x":9, "y":0},
+                {"x":10, "y":0},
+                {"x":11, "y":0},
+                {"x":12, "y":0},
+
+                {"x":0, "y":1},
+                {"x":1, "y":1},
+                {"x":2, "y":1},
+                {"x":3, "y":1},
+                {"x":4, "y":1},
+                {"x":5, "y":1},
+                {"x":6, "y":1},
+                {"x":7, "y":1},
+                {"x":8, "y":1},
+                {"x":9, "y":1},
+                {"x":10, "y":1},
+                {"x":11, "y":1},
+                {"x":12, "y":1},
+
+                {"x":0, "y":2},
+                {"x":1, "y":2},
+                {"x":2, "y":2},
+                {"x":3, "y":2},
+                {"x":4, "y":2},
+                {"x":5, "y":2},
+                {"x":6, "y":2},
+                {"x":7, "y":2},
+                {"x":8, "y":2},
+                {"x":9, "y":2},
+                {"x":10, "y":2},
+                {"x":11, "y":2},
+                {"x":12, "y":2},
+
+                {"x":0, "y":3},
+                {"x":1, "y":3},
+                {"x":2, "y":3},
+                {"x":3, "y":3},
+                {"x":4, "y":3},
+                {"x":5, "y":3},
+                {"x":6, "y":3},
+                {"x":7, "y":3},
+                {"x":8, "y":3},
+                {"x":9, "y":3},
+                {"x":10, "y":3},
+                {"x":11, "y":3},
+                {"x":12, "y":3}
+            ]
+        },
+        "LAYOUT_ortho_4x12": {
+            "layout": [
+
+                {"x":0, "y":0},
+                {"x":1, "y":0},
+                {"x":2, "y":0},
+                {"x":3, "y":0},
+                {"x":4, "y":0},
+                {"x":5, "y":0},
+
+                {"x":7, "y":0},
+                {"x":8, "y":0},
+                {"x":9, "y":0},
+                {"x":10, "y":0},
+                {"x":11, "y":0},
+                {"x":12, "y":0},
+
+                {"x":0, "y":1},
+                {"x":1, "y":1},
+                {"x":2, "y":1},
+                {"x":3, "y":1},
+                {"x":4, "y":1},
+                {"x":5, "y":1},
+
+                {"x":7, "y":1},
+                {"x":8, "y":1},
+                {"x":9, "y":1},
+                {"x":10, "y":1},
+                {"x":11, "y":1},
+                {"x":12, "y":1},
+
+                {"x":0, "y":2},
+                {"x":1, "y":2},
+                {"x":2, "y":2},
+                {"x":3, "y":2},
+                {"x":4, "y":2},
+                {"x":5, "y":2},
+
+                {"x":7, "y":2},
+                {"x":8, "y":2},
+                {"x":9, "y":2},
+                {"x":10, "y":2},
+                {"x":11, "y":2},
+                {"x":12, "y":2},
+
+                {"x":0, "y":3},
+                {"x":1, "y":3},
+                {"x":2, "y":3},
+                {"x":3, "y":3},
+                {"x":4, "y":3},
+                {"x":5, "y":3},
+
+                {"x":7, "y":3},
+                {"x":8, "y":3},
+                {"x":9, "y":3},
+                {"x":10, "y":3},
+                {"x":11, "y":3},
+                {"x":12, "y":3}
+            ]
+        }
+    }
+}
diff --git a/keyboards/montsinger/rebound/rev4/keymaps/default/keymap.c b/keyboards/montsinger/rebound/rev4/keymaps/default/keymap.c
new file mode 100644
index 0000000000..be038b1f53
--- /dev/null
+++ b/keyboards/montsinger/rebound/rev4/keymaps/default/keymap.c
@@ -0,0 +1,102 @@
+#include QMK_KEYBOARD_H
+
+// Each layer gets a name for readability, which is then used in the keymap matrix below.
+// The underscores don't mean anything - you can have a layer called STUFF or any other name.
+// Layer names don't all need to be of the same length, obviously, and you can also skip them
+// entirely and just use numbers.
+
+enum layer_names {
+  _QWERTY,
+  _COLEMAK,
+  _DVORAK,
+  _LOWER,
+  _RAISE,
+  _ADJUST
+};
+
+enum custom_keycodes {
+  QWERTY = SAFE_RANGE,
+  COLEMAK,
+  DVORAK
+};
+
+#define LOWER  MO(_LOWER)
+#define RAISE  MO(_RAISE)
+#define ADJUST MO(_ADJUST)
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+[_QWERTY] = LAYOUT_all(
+   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_PGUP, 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_PGDN, KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_ENT ,
+   ADJUST,  KC_LCTL, KC_LALT, KC_LGUI, LOWER,   KC_SPC, KC_ENT,  KC_SPC,  RAISE,   KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT
+),
+
+[_COLEMAK] = LAYOUT_all(
+  KC_TAB,  KC_Q,    KC_W,    KC_F,    KC_P,    KC_G,             KC_J,    KC_L,    KC_U,    KC_Y,    KC_SCLN, KC_BSPC,
+  KC_ESC,  KC_A,    KC_R,    KC_S,    KC_T,    KC_D,   _______,  KC_H,    KC_N,    KC_E,    KC_I,    KC_O,    KC_QUOT,
+  KC_LSFT, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,   _______,  KC_K,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_ENT ,
+  ADJUST,  KC_LCTL, KC_LALT, KC_LGUI, LOWER,   KC_SPC, _______,  KC_SPC,  RAISE,   KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT
+),
+
+[_DVORAK] = LAYOUT_all(
+  KC_TAB,  KC_QUOT, KC_COMM, KC_DOT,  KC_P,    KC_Y,             KC_F,    KC_G,    KC_C,    KC_R,    KC_L,    KC_BSPC,
+  KC_ESC,  KC_A,    KC_O,    KC_E,    KC_U,    KC_I,   _______,  KC_D,    KC_H,    KC_T,    KC_N,    KC_S,    KC_SLSH,
+  KC_LSFT, KC_SCLN, KC_Q,    KC_J,    KC_K,    KC_X,   _______,  KC_B,    KC_M,    KC_W,    KC_V,    KC_Z,    KC_ENT ,
+  ADJUST,  KC_LCTL, KC_LALT, KC_LGUI, LOWER,   KC_SPC, _______,  KC_SPC,  RAISE,   KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT
+),
+
+[_LOWER] = LAYOUT_all(
+  KC_TILD, KC_EXLM, KC_AT,   KC_HASH, KC_DLR,  KC_PERC,          KC_CIRC, KC_AMPR, KC_ASTR, KC_LPRN, KC_RPRN, KC_DEL,
+  KC_DEL,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   _______, KC_F6,   KC_UNDS, KC_PLUS, KC_LCBR, KC_RCBR, KC_PIPE,
+  _______, KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  _______, KC_F12,S(KC_NUHS),S(KC_NUBS),_______, _______, _______,
+  _______, _______, _______, _______, _______, _______, _______, _______, _______, KC_MNXT, KC_VOLD, KC_VOLU, KC_MPLY
+),
+
+[_RAISE] = LAYOUT_all(
+  KC_GRV,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,             KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_DEL,
+  KC_DEL,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   _______, KC_F6,   KC_MINS, KC_EQL,  KC_LBRC, KC_RBRC, KC_BSLS,
+  _______, KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  _______, KC_F12,  KC_NUHS, KC_NUBS, _______, _______, _______,
+  _______, _______, _______, _______, _______, _______, _______, _______, _______, KC_MNXT, KC_VOLD, KC_VOLU, KC_MPLY
+),
+
+[_ADJUST] =  LAYOUT_all(
+  _______, RESET,   _______, _______, _______, _______,          _______, _______, _______, _______, _______, KC_DEL,
+  _______, _______, _______, AU_ON,   AU_OFF,  AG_NORM, _______, AG_SWAP, QWERTY,  COLEMAK, DVORAK,  _______, _______,
+  _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
+  _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______
+)
+};
+
+layer_state_t layer_state_set_user(layer_state_t state) {
+    return update_tri_layer_state(state, _LOWER, _RAISE, _ADJUST);
+}
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+    switch (keycode) {
+        case QWERTY:
+            if (record->event.pressed) {
+                set_single_persistent_default_layer(_QWERTY);
+             }
+             break;
+        case COLEMAK:
+            if (record->event.pressed) {
+                set_single_persistent_default_layer(_COLEMAK);
+            }
+            break;
+        case DVORAK:
+            if (record->event.pressed) {
+                set_single_persistent_default_layer(_DVORAK);
+            }
+            break;
+    }
+    return true;
+}
+
+void encoder_update_user(uint8_t index, bool clockwise) {
+    if (clockwise) {
+      tap_code16(S(KC_VOLD));
+    } else {
+      tap_code16(KC_VOLU);
+    }
+}
diff --git a/keyboards/montsinger/rebound/rev4/keymaps/rossman360/keymap.c b/keyboards/montsinger/rebound/rev4/keymaps/rossman360/keymap.c
new file mode 100644
index 0000000000..a0c3ab6395
--- /dev/null
+++ b/keyboards/montsinger/rebound/rev4/keymaps/rossman360/keymap.c
@@ -0,0 +1,120 @@
+#include QMK_KEYBOARD_H
+#include "rossman360.h"
+
+#define PGMOD LT(_NUM, KC_PGDN)
+#define TABMOD LT(_FN1, KC_TAB)
+#define SPCMOD LT(_FN1, KC_SPACE)
+#define ENTMOD LT(_FN2, KC_ENTER)
+#define ESCMOD LT(_NUM, KC_ESC)
+#define RSMOD LT(_FN1, KC_RSHIFT)
+#
+
+enum layer_names {
+  _BASE,
+  _DEL,
+  _FN1,
+  _FN2,
+  _NUM,
+};
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+[_BASE] = LAYOUT_all(
+    KC_ESC  , KC_Q   , KC_W   , KC_E   , KC_R   , KC_T   ,          KC_Y   , KC_U   , KC_I   , KC_O   , KC_P   , NTAB  ,
+    JUMPBACK, KC_A   , KC_S   , KC_D   , KC_F   , KC_G   ,MO(_DEL), KC_H   , KC_J   , KC_K   , KC_L   , KC_SCLN, KC_QUOT,
+    KC_LSFT , KC_Z   , KC_X   , KC_C   , KC_V   , KC_B   , LM(_FN1, MOD_LALT), KC_N   , KC_M   , KC_COMM, KC_DOT , KC_SLSH, KC_MINS,
+    CMDBSP  , ALTDEL , KC_NO  , CTRLSP , TABMOD , PGMOD  , QUIT   , ENTMOD , SPCMOD , MO(_DEL),KC_NO  , KC_BSPC, KC_DEL
+  ),
+
+[_FN1] = LAYOUT_all(
+    _______, TAB1   , TAB2   , TAB3   , TAB4   , _______,          _______, UNDO   , _______, _______, _______, CTAB   ,
+    KC_CAPS, _______, _______, _______, _______, _______, _______, KC_HOME, KC_LEFT, KC_UP  , KC_RIGHT,KC_END , KC_NO  ,
+    _______, _______, XPANDR , _______, PMERGE , _______, _______, _______, PMERGE , KC_DOWN, _______, _______, EMDASH ,
+    WREFRESH,_______, _______, _______, LWORD  , RWORD  , _______, KC_NO  , _______, KC_NO  , _______, _______, _______
+  ),
+
+[_FN2] = LAYOUT_all(
+    _______, SPEAK1 , SPEAK2 , SPEAK3 , SPEAK4 , _______,          _______, _______, _______, _______, _______, _______,
+    _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
+    _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
+    _______, _______, _______, _______, PARADOWN, CSPEAK, _______, _______, KC_NO  , KC_NO  , _______, _______, _______
+  ),
+
+[_DEL] = LAYOUT_all(
+    RESET,   _______, _______, _______, _______, _______,          _______, UNDO   , _______, _______, _______, CTAB   ,
+    REMCAPS, _______, _______, _______, _______, _______, _______, _______, KC_LEFT, KC_UP  ,KC_RIGHT, _______, _______,
+    _______, _______, _______, _______, _______, _______, _______, _______, _______, KC_DOWN, _______, _______, _______,
+    _______, _______, _______, BLINE  , KC_BSPC, BWORD  , _______, KC_NO  , KC_NO  , _______, _______, _______, _______
+  ),
+
+[_NUM] = LAYOUT_all(
+    KC_GRV , KC_1   , KC_7   , KC_8   , KC_9   , KC_5   ,          KC_6   , KC_7   , KC_8   , KC_9   , KC_MINS, KC_EQL,
+    KC_CAPS, _______, KC_4   , KC_5   , KC_6   , KC_BSPC, KC_LBRC, KC_MINS, KC_4   , KC_5   , KC_6   , KC_COLN, _______,
+    KC_COMM, KC_DOT , KC_1   , KC_2   , KC_3   ,KC_ENTER, KC_RBRC, KC_RBRC, KC_1   , KC_2   , KC_3   , KC_BSLS, _______,
+    _______, _______, _______, _______, KC_0   , _______, _______, KC_NO  , KC_NO  , KC_0   , _______, _______, _______
+  )
+};
+
+void encoder_update_user(uint8_t index, bool clockwise) {
+   switch(get_highest_layer(layer_state)){
+case _BASE:
+    if (clockwise) {
+      tap_code16(KC_VOLD);
+    } else {
+      tap_code16(KC_VOLU);
+    }
+   break;
+case _DEL:
+    if (clockwise) {
+      tap_code16(KC_F11);
+    } else {
+      tap_code16(KC_F3);
+    }
+   break;
+
+ case _FN1:
+    if (clockwise) {
+      tap_code16(S(KC_TAB));
+    } else {
+      tap_code16(KC_TAB);
+    }
+   break;
+}
+}
+
+#ifdef OLED_DRIVER_ENABLE
+void oled_task_user(void) {
+    // Host Keyboard Layer Status
+    oled_write_P(PSTR(""), false);
+
+    switch (get_highest_layer(layer_state)) {
+        case _BASE:
+            oled_write_P(PSTR("Rebound\n"), false);
+            oled_write_P(PSTR("Rev3.1\n"), false);
+	    break;
+        case _FN1:
+            oled_write_P(PSTR("Fn\n"), false);
+            break;
+        case _FN2:
+            oled_write_P(PSTR("Para\n"), false);
+            break;
+            case _NUM:
+            oled_write_P(PSTR("Num\n"), false);
+            break;
+            case _DEL:
+            oled_write_P(PSTR("Del\n"), false);
+            break;
+        default:
+            // Or use the write_ln shortcut over adding '\n' to the end of your string
+            oled_write_ln_P(PSTR("Undefined"), false);
+}
+
+    // Host Keyboard LED Status
+    led_t led_state = host_keyboard_led_state();
+    oled_write_P(led_state.num_lock ? PSTR("NUM ") : PSTR("    "), false);
+    oled_write_P(led_state.caps_lock ? PSTR("CAPS") : PSTR("    "), false);
+    oled_write_P(led_state.scroll_lock ? PSTR("SCR ") : PSTR("    "), false);
+
+}
+
+#endif
diff --git a/keyboards/montsinger/rebound/rev4/keymaps/rossman360/rules.mk b/keyboards/montsinger/rebound/rev4/keymaps/rossman360/rules.mk
new file mode 100644
index 0000000000..fa835793e7
--- /dev/null
+++ b/keyboards/montsinger/rebound/rev4/keymaps/rossman360/rules.mk
@@ -0,0 +1,4 @@
+MOUSEKEY_ENABLE = no
+CONSOLE_ENABLE = no
+COMMAND_ENABLE = no
+OLED_DRIVER_ENABLE = no
diff --git a/keyboards/montsinger/rebound/rev4/rev4.h b/keyboards/montsinger/rebound/rev4/rev4.h
new file mode 100644
index 0000000000..923f7d1a24
--- /dev/null
+++ b/keyboards/montsinger/rebound/rev4/rev4.h
@@ -0,0 +1,59 @@
+/* Copyright 2020 Ross Montsinger
+ *
+ * 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 is a shortcut to help you visually see your layout.
+ * The first section contains all of the arguments representing the
+ * 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_ortho_4x12( \
+    K00, K70, K01, K71, K02, K72, K04, K84, K05, K75, K06, K76, \
+    K10, K60, K11, K61, K12, K62, K14, K74, K15, K65, K16, K66, \
+    K20, K50, K21, K51, K22, K52, K24, K64, K25, K55, K26, K56,\
+    K30, K40, K31, K41, K32, K42, K34, K54, K35, K45, K36, K46\
+    ) { \
+  { K00, K01, K02, K04, K05, K06, K07}, \
+  { K10, K11, K12, K14, K15, K16, K17 }, \
+  { K20, K21, K22, K24, K25, K26, K27 }, \
+  { K30, K31, K32, K34, K35, K36, K37 }, \
+  { K40, K41, K42, K44, K45, K46, K47 }, \
+  { K50, K51, K52, K54, K55, K56, K57 }, \
+  { K60, K61, K62, K64, K65, K66, K67 }, \
+  { K70, K71, K72, K74, K75, K76, K77 } \
+}
+
+#define LAYOUT_all( \
+    K00, K70, K01, K71, K02, K72,      K04, K74, K05, K75, K06, K76, \
+    K10, K60, K11, K61, K12, K62, K13, K14, K64, K15, K65, K16, K66, \
+    K20, K50, K21, K51, K22, K52, K23, K24, K54, K25, K55, K26, K56,\
+    K30, K40, K31, K41, K32, K42, K33, K34, K44, K35, K45, K36, K46\
+    ) { \
+  { K00, K01, K02, KC_NO, K04, K05, K06}, \
+  { K10, K11, K12, K13, K14, K15, K16}, \
+  { K20, K21, K22, K23, K24, K25, K26}, \
+  { K30, K31, K32, K33, K34, K35, K36}, \
+  { K40, K41, K42, KC_NO, K44, K45, K46}, \
+  { K50, K51, K52, KC_NO, K54, K55, K56}, \
+  { K60, K61, K62, KC_NO, K64, K65, K66}, \
+  { K70, K71, K72, KC_NO, K74, K75, K76} \
+}
+
diff --git a/keyboards/montsinger/rebound/rev4/rules.mk b/keyboards/montsinger/rebound/rev4/rules.mk
new file mode 100644
index 0000000000..0759709231
--- /dev/null
+++ b/keyboards/montsinger/rebound/rev4/rules.mk
@@ -0,0 +1,33 @@
+# 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
+
+BOOTMAGIC_ENABLE = lite     # Virtual DIP switch configuration
+MOUSEKEY_ENABLE = yes       # Mouse keys
+EXTRAKEY_ENABLE = yes       # Audio control and System control
+CONSOLE_ENABLE = yes        # Console for debug
+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
+RGBLIGHT_ENABLE = no        # Enable keyboard RGB underglow
+MIDI_ENABLE = no            # MIDI support
+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
+ENCODER_ENABLE = yes
+
+LAYOUTS = ortho_4x12
+LAYOUTS_HAS_RGB = no
+