[Keyboard] add Symmetric70 keyboard prototype (#10780)

* proto_symmetric70 作成中

74hc157 無しで 片手動作は、右と左でそれぞれうごいた。

* add 74HC157 support

* add keymaps/default_mac

* update proto_symmetric70/keymaps/default_mac/readme.md

* update 74HC157 support

* add keyboards/handwired/proto_symmetric70/matrix.c.patch

* update keyboards/handwired/proto_symmetric70/readme.md

* rename proto_symmetric70 to symmetric70_proto

* Update keyboards/handwired/symmetric70_proto/config.h

Co-authored-by: Drashna Jaelre <drashna@live.com>

* Update keyboards/handwired/symmetric70_proto/symmetric70_proto.c

Co-authored-by: Drashna Jaelre <drashna@live.com>

* Update keyboards/handwired/symmetric70_proto/readme.md

Co-authored-by: Ryan <fauxpark@gmail.com>

* update readme.md

* update keyboards/handwired/symmetric70_proto/config.h

* remove keyboards/handwired/symmetric70_proto/matrix.c.patch

* Update keyboards/handwired/symmetric70_proto/matrix.c

Co-authored-by: Drashna Jaelre <drashna@live.com>

* Update keyboards/handwired/symmetric70_proto/matrix.c

Co-authored-by: Drashna Jaelre <drashna@live.com>

* use KC_NO, _______

Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: Ryan <fauxpark@gmail.com>

11 files changed, 702 insertions, 0 deletions

diff --git a/keyboards/handwired/symmetric70_proto/config.h b/keyboards/handwired/symmetric70_proto/config.h
new file mode 100644
index 0000000000..2cdce5802c
--- /dev/null
+++ b/keyboards/handwired/symmetric70_proto/config.h
@@ -0,0 +1,150 @@
+/*
+Copyright 2020 mtei
+
+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   0x2BE5
+#define DEVICE_VER   0x0001
+#define MANUFACTURER mtei
+#define PRODUCT      Symmetric70 prototype
+
+/* key matrix size */
+#define MATRIX_ROWS 5
+#define MATRIX_COLS 16
+
+/*
+ * 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 { D4, C6, D7, E6, B4 }
+#define MATRIX_COL_PINS { F4,F4,F5,F5, F6,F6,F7,F7,  B6,B6,B2,B2, B3,B3,B1,B1 }
+#define UNUSED_PINS
+
+#define MATRIX_MUL_SEL  {  0, 1, 0, 1,  0, 1, 0, 1,   1, 0, 1, 0,  1, 0, 1, 0 }
+/* use 74HC157: quadruple 2-line to 1-line data selectors / multiplexers */
+#define MATRIX_MUL_SELECT  B5 /* 74HC157 pin1:~A/B */
+
+/* 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 SOFT_SERIAL_PIN D0  // or D1, D2, D3, E6
+
+//#define BACKLIGHT_PIN B7
+//#define BACKLIGHT_LEVELS 3
+//#define BACKLIGHT_BREATHING
+
+//#define RGB_DI_PIN E2
+//#ifdef RGB_DI_PIN
+//#    define RGBLED_NUM 16
+//#    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 useful 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
+
+/*
+ * 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
+
+/* disable these deprecated features by default */
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
+
+/* Bootmagic Lite key configuration */
+//#define BOOTMAGIC_LITE_ROW 0
+//#define BOOTMAGIC_LITE_COLUMN 0
diff --git a/keyboards/handwired/symmetric70_proto/info.json b/keyboards/handwired/symmetric70_proto/info.json
new file mode 100644
index 0000000000..abb0976a3f
--- /dev/null
+++ b/keyboards/handwired/symmetric70_proto/info.json
@@ -0,0 +1,87 @@
+{
+    "keyboard_name": "symmetric70_proto",
+    "url": "",
+    "maintainer": "mtei",
+    "width": 16,
+    "height": 5,
+    "layouts": {
+        "LAYOUT": {
+            "layout": [
+		{"label":"L00", "x":0, "y":0, "w":1.25},
+		{"label":"L01", "x":1.25, "y":0},
+		{"label":"L02", "x":2.25, "y":0},
+		{"label":"L03", "x":3.25, "y":0},
+		{"label":"L04", "x":4.25, "y":0},
+		{"label":"L05", "x":5.25, "y":0},
+		{"label":"L06", "x":6.25, "y":0},
+		{"label":"R06", "x":8.75, "y":0},
+		{"label":"R05", "x":9.75, "y":0},
+		{"label":"R04", "x":10.75, "y":0},
+		{"label":"R03", "x":11.75, "y":0},
+		{"label":"R02", "x":12.75, "y":0},
+		{"label":"R01", "x":13.75, "y":0},
+		{"label":"R00", "x":14.75, "y":0, "w":1.25},
+
+		{"label":"L10", "x":0, "y":1, "w":1.5},
+		{"label":"L11", "x":1.5, "y":1},
+		{"label":"L12", "x":2.5, "y":1},
+		{"label":"L13", "x":3.5, "y":1},
+		{"label":"L14", "x":4.5, "y":1},
+		{"label":"L15", "x":5.5, "y":1},
+		{"label":"L16", "x":6.5, "y":1},
+		{"label":"R16", "x":8.5, "y":1},
+		{"label":"R15", "x":9.5, "y":1},
+		{"label":"R14", "x":10.5, "y":1},
+		{"label":"R13", "x":11.5, "y":1},
+		{"label":"R12", "x":12.5, "y":1},
+		{"label":"R11", "x":13.5, "y":1},
+		{"label":"R10", "x":14.5, "y":1, "w":1.5},
+
+		{"label":"L20", "x":0, "y":2, "w":1.25},
+		{"label":"L21", "x":1.25, "y":2},
+		{"label":"L22", "x":2.25, "y":2},
+		{"label":"L23", "x":3.25, "y":2},
+		{"label":"L24", "x":4.25, "y":2},
+		{"label":"L25", "x":5.25, "y":2},
+		{"label":"L26", "x":6.25, "y":2},
+		{"label":"R26", "x":8.75, "y":2},
+		{"label":"R25", "x":9.75, "y":2},
+		{"label":"R24", "x":10.75, "y":2},
+		{"label":"R23", "x":11.75, "y":2},
+		{"label":"R22", "x":12.75, "y":2},
+		{"label":"R21", "x":13.75, "y":2},
+		{"label":"R20", "x":14.75, "y":2, "w":1.25},
+
+		{"label":"L30", "x":0, "y":3},
+		{"label":"L31", "x":1, "y":3},
+		{"label":"L32", "x":2, "y":3},
+		{"label":"L33", "x":3, "y":3},
+		{"label":"L34", "x":4, "y":3},
+		{"label":"L35", "x":5, "y":3},
+		{"label":"L36", "x":6, "y":3},
+		{"label":"L37", "x":7, "y":3},
+		{"label":"R37", "x":8, "y":3},
+		{"label":"R36", "x":9, "y":3},
+		{"label":"R35", "x":10, "y":3},
+		{"label":"R34", "x":11, "y":3},
+		{"label":"R33", "x":12, "y":3},
+		{"label":"R32", "x":13, "y":3},
+		{"label":"R31", "x":14, "y":3},
+		{"label":"R30", "x":15, "y":3},
+
+		{"label":"L40", "x":0, "y":4, "w":1.75},
+		{"label":"L42", "x":1.75, "y":4, "w":1.25},
+		{"label":"L43", "x":3, "y":4, "w":1.25},
+		{"label":"L44", "x":4.25, "y":4},
+		{"label":"L45", "x":5.25, "y":4, "w":1.25},
+		{"label":"L47", "x":6.5, "y":4, "w":1.5},
+		{"label":"R47", "x":8, "y":4, "w":1.5},
+		{"label":"R45", "x":9.5, "y":4, "w":1.25},
+		{"label":"R44", "x":10.75, "y":4},
+		{"label":"R43", "x":11.75, "y":4, "w":1.25},
+		{"label":"R42", "x":13, "y":4, "w":1.25},
+		{"label":"R40", "x":14.25, "y":4, "w":1.75}
+            ]
+        }
+    }
+}
diff --git a/keyboards/handwired/symmetric70_proto/keymaps/default/keymap.c b/keyboards/handwired/symmetric70_proto/keymaps/default/keymap.c
new file mode 100644
index 0000000000..d396907146
--- /dev/null
+++ b/keyboards/handwired/symmetric70_proto/keymaps/default/keymap.c
@@ -0,0 +1,54 @@
+/* Copyright 2020 mtei
+ *
+ * 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
+
+// Defines names for use in layer keycodes and the keymap
+enum layer_names {
+    _BASE,
+    _FN
+};
+
+#define KC_FUNC MO(_FN)
+
+// clang-format off
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    /* Base */
+    [_BASE] = LAYOUT(
+     //_ESC_1_2_3_4_5_NO              _NO_6_7_8_9_0_BSPC
+     //_TAB_Q_W_E_R_T_MINS            _EQL_Y_U_I_O_P_BSLS
+     //_LCTL_A_S_D_F_G_LBRC           _RBRC_H_J_K_L_SCLN_RCTL
+     //_LSFT_Z_X_C_V_B_GRV_NO         _NO_QUOT_N_M_COMM_DOT_SLSH_RSFT
+     //_FUNC_CAPS_LALT_LGUI_SPC_BSPC  _ENT_SPC_RGUI_RALT_APP_FUNC
+      KC_ESC,  KC_1, KC_2, KC_3, KC_4, KC_5, KC_NO,                 KC_NO,   KC_6, KC_7, KC_8,    KC_9,   KC_0,    KC_BSPC,
+       KC_TAB,  KC_Q, KC_W, KC_E, KC_R, KC_T, KC_MINS,             KC_EQL,  KC_Y, KC_U, KC_I,    KC_O,   KC_P,    KC_BSLS,
+      KC_LCTL, KC_A, KC_S, KC_D, KC_F, KC_G, KC_LBRC,               KC_RBRC, KC_H, KC_J, KC_K,    KC_L,   KC_SCLN, KC_RCTL,
+     KC_LSFT, KC_Z, KC_X, KC_C, KC_V, KC_B, KC_GRV, KC_NO,   KC_NO,  KC_QUOT, KC_N, KC_M, KC_COMM, KC_DOT, KC_SLSH, KC_RSFT,
+     KC_FUNC,    KC_CAPS, KC_LALT, KC_LGUI, KC_SPC, KC_BSPC, KC_ENT,   KC_SPC,  KC_RGUI, KC_RALT,  KC_APP,          KC_FUNC
+    ),
+    [_FN] = LAYOUT(
+     //_NO_F1_F2_F3_F4_F5_NO                   _NO_F6_F7_F8_F9_F10_F11
+     //_NO_NO_PAUS_SLCK_NO_NO_NO               _NO_NO_NO_SLCK_PAUS_NO_F12
+     //_TRNS_HOME_NO_UP_NO_PGUP_INS            _INS_PGUP_NO_UP_NO_HOME_TRNS
+     //_TRNS_END_LEFT_DOWN_RGHT_PGDN_DEL_TRNS  _TRNS_DEL_PGDN_LEFT_DOWN_RGHT_END_TRNS
+     //_TRNS_PSCR_TRNS_TRNS_NO_NO              _NO_NO_TRNS_TRNS_PSCR_TRNS
+       KC_NO, KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_NO,               KC_NO,  KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,
+       KC_NO, KC_NO,   KC_PAUS, KC_SLCK, KC_NO,   KC_NO,   KC_NO,               KC_NO,  KC_NO,   KC_NO,   KC_SLCK, KC_PAUS, KC_NO,   KC_F12,
+     _______, KC_HOME, KC_NO,   KC_UP,   KC_NO,   KC_PGUP, KC_INS,              KC_INS, KC_PGUP, KC_NO,   KC_UP,   KC_NO,   KC_HOME, _______,
+     _______, KC_END,  KC_LEFT, KC_DOWN, KC_RGHT, KC_PGDN, KC_DEL, KC_NO,KC_NO, KC_DEL, KC_PGDN, KC_LEFT, KC_DOWN, KC_RGHT, KC_END,  _______,
+     _______,          KC_PSCR, _______, _______, KC_NO,           KC_NO,KC_NO,         KC_NO,   _______, _______, KC_PSCR,          _______
+    )
+};
diff --git a/keyboards/handwired/symmetric70_proto/keymaps/default/readme.md b/keyboards/handwired/symmetric70_proto/keymaps/default/readme.md
new file mode 100644
index 0000000000..f9bb5bf675
--- /dev/null
+++ b/keyboards/handwired/symmetric70_proto/keymaps/default/readme.md
@@ -0,0 +1,9 @@
+# The default keymap for symmetric70_proto
+
+```
+  ESC   1  2  3  4  5              6  7  8  9  0   BS
+  TAB    Q  W  E  R  T  -      =  Y  U  I  O  P  \
+  CTL   A  S  D  F  G  [        ]  H  J  K  L  ;   CTL
+  SFT  Z  X  C  V  B  `          '  N  M  ,  .  /  SFT
+  FUNC CAPS ALT GUI SPC BS   ENT SPC GUI RALT APP FUNC
+```
diff --git a/keyboards/handwired/symmetric70_proto/keymaps/default_mac/keymap.c b/keyboards/handwired/symmetric70_proto/keymaps/default_mac/keymap.c
new file mode 100644
index 0000000000..30f42e70ab
--- /dev/null
+++ b/keyboards/handwired/symmetric70_proto/keymaps/default_mac/keymap.c
@@ -0,0 +1,54 @@
+/* Copyright 2020 mtei
+ *
+ * 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
+
+// Defines names for use in layer keycodes and the keymap
+enum layer_names {
+    _BASE,
+    _FN
+};
+
+#define KC_FUNC MO(_FN)
+
+// clang-format off
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    /* Base */
+    [_BASE] = LAYOUT(
+     //_ESC_1_2_3_4_5_NO              _NO_6_7_8_9_0_BSPC
+     //_TAB_Q_W_E_R_T_MINS            _EQL_Y_U_I_O_P_BSLS
+     //_LCTL_A_S_D_F_G_LBRC           _RBRC_H_J_K_L_SCLN_RCTL
+     //_LSFT_Z_X_C_V_B_GRV_NO         _NO_QUOT_N_M_COMM_DOT_SLSH_RSFT
+     //_FUNC_CAPS_LALT_LGUI_SPC_BSPC  _ENT_SPC_RGUI_RALT_APP_FUNC
+      KC_ESC,  KC_1, KC_2, KC_3, KC_4, KC_5, KC_NO,                    KC_NO,   KC_6, KC_7, KC_8,    KC_9,   KC_0,    KC_BSPC,
+       KC_TAB,  KC_Q, KC_W, KC_E, KC_R, KC_T, KC_MINS,                KC_EQL,  KC_Y, KC_U, KC_I,    KC_O,   KC_P,    KC_BSLS,
+      KC_LCTL, KC_A, KC_S, KC_D, KC_F, KC_G, KC_LBRC,                  KC_RBRC, KC_H, KC_J, KC_K,    KC_L,   KC_SCLN, KC_RCTL,
+     KC_LSFT, KC_Z, KC_X, KC_C, KC_V, KC_B, KC_GRV, KC_LANG2, KC_LANG1, KC_QUOT, KC_N, KC_M, KC_COMM, KC_DOT, KC_SLSH, KC_RSFT,
+     KC_FUNC,    KC_CAPS, KC_LALT, KC_LGUI, KC_SPC, KC_BSPC,   KC_ENT,   KC_SPC,  KC_RGUI, KC_RALT,  KC_APP,          KC_FUNC
+    ),
+    [_FN] = LAYOUT(
+     //_NO_F1_F2_F3_F4_F5_NO                   _NO_F6_F7_F8_F9_F10_F11
+     //_NO_NO_PAUS_SLCK_NO_NO_NO               _NO_NO_NO_SLCK_PAUS_NO_F12
+     //_TRNS_HOME_NO_UP_NO_PGUP_INS            _INS_PGUP_NO_UP_NO_HOME_TRNS
+     //_TRNS_END_LEFT_DOWN_RGHT_PGDN_DEL_TRNS  _TRNS_DEL_PGDN_LEFT_DOWN_RGHT_END_TRNS
+     //_TRNS_PSCR_TRNS_TRNS_NO_NO              _NO_NO_TRNS_TRNS_PSCR_TRNS
+       KC_NO, KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_NO,               KC_NO,  KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,
+       KC_NO, KC_NO,   KC_PAUS, KC_SLCK, KC_NO,   KC_NO,   KC_NO,               KC_NO,  KC_NO,   KC_NO,   KC_SLCK, KC_PAUS, KC_NO,   KC_F12,
+     _______, KC_HOME, KC_NO,   KC_UP,   KC_NO,   KC_PGUP, KC_INS,              KC_INS, KC_PGUP, KC_NO,   KC_UP,   KC_NO,   KC_HOME, _______,
+     _______, KC_END,  KC_LEFT, KC_DOWN, KC_RGHT, KC_PGDN, KC_DEL, KC_NO,KC_NO, KC_DEL, KC_PGDN, KC_LEFT, KC_DOWN, KC_RGHT, KC_END,  _______,
+     _______,          KC_PSCR, _______, _______, KC_NO,           KC_NO,KC_NO,         KC_NO,   _______, _______, KC_PSCR,          _______
+    )
+};
diff --git a/keyboards/handwired/symmetric70_proto/keymaps/default_mac/readme.md b/keyboards/handwired/symmetric70_proto/keymaps/default_mac/readme.md
new file mode 100644
index 0000000000..c533e32832
--- /dev/null
+++ b/keyboards/handwired/symmetric70_proto/keymaps/default_mac/readme.md
@@ -0,0 +1,9 @@
+# The default_mac keymap for symmetric70_proto
+
+```
+  ESC   1  2  3  4  5                  6  7  8  9  0   BS
+  TAB    Q  W  E  R  T  -          =  Y  U  I  O  P    \
+  CTL   A  S  D  F  G  [            ]  H  J  K  L  ;   CTL
+  SFT  Z  X  C  V  B  ` LANG2 LANG1  '  N  M  ,  .  /  SFT
+  FUNC CAPS ALT GUI SPC BS      ENT SPC GUI RALT APP FUNC
+```
diff --git a/keyboards/handwired/symmetric70_proto/matrix.c b/keyboards/handwired/symmetric70_proto/matrix.c
new file mode 100644
index 0000000000..c016120737
--- /dev/null
+++ b/keyboards/handwired/symmetric70_proto/matrix.c
@@ -0,0 +1,226 @@
+/*
+Copyright 2012-2018 Jun Wako, Jack Humbert, Yiancar
+
+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 "util.h"
+#include "matrix.h"
+#include "debounce.h"
+#include "quantum.h"
+
+#ifdef DIRECT_PINS
+static pin_t direct_pins[MATRIX_ROWS][MATRIX_COLS] = DIRECT_PINS;
+#elif (DIODE_DIRECTION == ROW2COL) || (DIODE_DIRECTION == COL2ROW)
+static const pin_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
+static const pin_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
+#  ifdef MATRIX_MUL_SELECT
+static const pin_t col_sel[MATRIX_COLS] = MATRIX_MUL_SEL;
+#    ifndef MATRIX_MUL_SELECT_DELAY
+#      define MATRIX_MUL_SELECT_DELAY 1
+#    endif
+#  endif
+#endif
+
+/* matrix state(1:on, 0:off) */
+extern matrix_row_t raw_matrix[MATRIX_ROWS];  // raw values
+extern matrix_row_t matrix[MATRIX_ROWS];      // debounced values
+
+// matrix code
+
+#ifdef DIRECT_PINS
+
+static void init_pins(void) {
+    for (int row = 0; row < MATRIX_ROWS; row++) {
+        for (int col = 0; col < MATRIX_COLS; col++) {
+            pin_t pin = direct_pins[row][col];
+            if (pin != NO_PIN) {
+                setPinInputHigh(pin);
+            }
+        }
+    }
+}
+
+static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) {
+    // Start with a clear matrix row
+    matrix_row_t current_row_value = 0;
+
+    for (uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
+        pin_t pin = direct_pins[current_row][col_index];
+        if (pin != NO_PIN) {
+            current_row_value |= readPin(pin) ? 0 : (MATRIX_ROW_SHIFTER << col_index);
+        }
+    }
+
+    // If the row has changed, store the row and return the changed flag.
+    if (current_matrix[current_row] != current_row_value) {
+        current_matrix[current_row] = current_row_value;
+        return true;
+    }
+    return false;
+}
+
+#elif defined(DIODE_DIRECTION)
+#    if (DIODE_DIRECTION == COL2ROW)
+
+static void select_row(uint8_t row) {
+    setPinOutput(row_pins[row]);
+    writePinLow(row_pins[row]);
+}
+
+static void unselect_row(uint8_t row) { setPinInputHigh(row_pins[row]); }
+
+static void unselect_rows(void) {
+    for (uint8_t x = 0; x < MATRIX_ROWS; x++) {
+        setPinInputHigh(row_pins[x]);
+    }
+}
+
+static void init_pins(void) {
+#ifdef MATRIX_MUL_SELECT
+    setPinOutput(MATRIX_MUL_SELECT);
+    writePinLow(MATRIX_MUL_SELECT);
+#endif
+    unselect_rows();
+    for (uint8_t x = 0; x < MATRIX_COLS; x++) {
+        setPinInputHigh(col_pins[x]);
+    }
+}
+
+static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) {
+    // Start with a clear matrix row
+    matrix_row_t current_row_value = 0;
+
+    // Select row and wait for row selecton to stabilize
+    select_row(current_row);
+    matrix_io_delay();
+
+    // For each col...
+    for (uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
+        // Select the col pin to read (active low)
+#ifdef MATRIX_MUL_SELECT
+        writePin(MATRIX_MUL_SELECT,col_sel[col_index]);
+        __builtin_avr_delay_cycles(MATRIX_MUL_SELECT_DELAY);
+#endif
+        uint8_t pin_state = readPin(col_pins[col_index]);
+
+        // Populate the matrix row with the state of the col pin
+        current_row_value |= pin_state ? 0 : (MATRIX_ROW_SHIFTER << col_index);
+    }
+
+    // Unselect row
+    unselect_row(current_row);
+
+    // If the row has changed, store the row and return the changed flag.
+    if (current_matrix[current_row] != current_row_value) {
+        current_matrix[current_row] = current_row_value;
+        return true;
+    }
+    return false;
+}
+
+#    elif (DIODE_DIRECTION == ROW2COL)
+
+static void select_col(uint8_t col) {
+    setPinOutput(col_pins[col]);
+    writePinLow(col_pins[col]);
+}
+
+static void unselect_col(uint8_t col) { setPinInputHigh(col_pins[col]); }
+
+static void unselect_cols(void) {
+    for (uint8_t x = 0; x < MATRIX_COLS; x++) {
+        setPinInputHigh(col_pins[x]);
+    }
+}
+
+static void init_pins(void) {
+    unselect_cols();
+    for (uint8_t x = 0; x < MATRIX_ROWS; x++) {
+        setPinInputHigh(row_pins[x]);
+    }
+}
+
+static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col) {
+    bool matrix_changed = false;
+
+    // Select col and wait for col selecton to stabilize
+    select_col(current_col);
+    matrix_io_delay();
+
+    // For each row...
+    for (uint8_t row_index = 0; row_index < MATRIX_ROWS; row_index++) {
+        // Store last value of row prior to reading
+        matrix_row_t last_row_value    = current_matrix[row_index];
+        matrix_row_t current_row_value = last_row_value;
+
+        // Check row pin state
+        if (readPin(row_pins[row_index]) == 0) {
+            // Pin LO, set col bit
+            current_row_value |= (MATRIX_ROW_SHIFTER << current_col);
+        } else {
+            // Pin HI, clear col bit
+            current_row_value &= ~(MATRIX_ROW_SHIFTER << current_col);
+        }
+
+        // Determine if the matrix changed state
+        if ((last_row_value != current_row_value)) {
+            matrix_changed |= true;
+            current_matrix[row_index] = current_row_value;
+        }
+    }
+
+    // Unselect col
+    unselect_col(current_col);
+
+    return matrix_changed;
+}
+
+#    else
+#        error DIODE_DIRECTION must be one of COL2ROW or ROW2COL!
+#    endif
+#else
+#    error DIODE_DIRECTION is not defined!
+#endif
+
+void matrix_init_custom(void) {
+    // initialize key pins
+    init_pins();
+
+    // initialize matrix state: all keys off
+    for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
+        raw_matrix[i] = 0;
+        matrix[i]     = 0;
+    }
+
+}
+
+bool matrix_scan_custom(matrix_row_t current_matrix[]) {
+    bool changed = false;
+
+#if defined(DIRECT_PINS) || (DIODE_DIRECTION == COL2ROW)
+    // Set row, read cols
+    for (uint8_t current_row = 0; current_row < MATRIX_ROWS; current_row++) {
+        changed |= read_cols_on_row(current_matrix, current_row);
+    }
+#elif (DIODE_DIRECTION == ROW2COL)
+    // Set col, read rows
+    for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) {
+        changed |= read_rows_on_col(current_matrix, current_col);
+    }
+#endif
+
+    return changed;
+}
diff --git a/keyboards/handwired/symmetric70_proto/readme.md b/keyboards/handwired/symmetric70_proto/readme.md
new file mode 100644
index 0000000000..01c2889c27
--- /dev/null
+++ b/keyboards/handwired/symmetric70_proto/readme.md
@@ -0,0 +1,20 @@
+# symmetric70_proto
+
+![symmetric70_proto](https://i.imgur.com/Br4pH9ol.jpg)
+![74HC157_schematic](https://i.imgur.com/8IU8Jgcl.jpg)
+
+A compact 70keys keyboard (prototype) designed by mtei
+
+* Keyboard Maintainer: [mtei](https://github.com/mtei)
+* Hardware Supported: Pro Micro (ATmega32U4) & 74HC157
+* Hardware Availability: This is just prototype
+
+Make example for this keyboard (after setting up your build environment):
+
+    make symmetric70_proto:default
+
+Flashing example for this keyboard:
+
+    make symmetric70_proto:default:flash
+
+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/handwired/symmetric70_proto/rules.mk b/keyboards/handwired/symmetric70_proto/rules.mk
new file mode 100644
index 0000000000..494dc6fbaf
--- /dev/null
+++ b/keyboards/handwired/symmetric70_proto/rules.mk
@@ -0,0 +1,27 @@
+# MCU name
+MCU = atmega32u4
+
+# Bootloader selection
+BOOTLOADER = caterina
+
+# Build Options
+#   change yes to no to disable
+#
+BOOTMAGIC_ENABLE = lite     # Virtual DIP switch configuration
+MOUSEKEY_ENABLE = no        # Mouse keys
+EXTRAKEY_ENABLE = no        # 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 = no        # Enable keyboard RGB underglow
+BLUETOOTH_ENABLE = no       # Enable Bluetooth
+AUDIO_ENABLE = no           # Audio output
+
+CUSTOM_MATRIX = lite
+SRC += matrix.c
+
+## CONSOLE_ENABLE = yes # matrix dump
diff --git a/keyboards/handwired/symmetric70_proto/symmetric70_proto.c b/keyboards/handwired/symmetric70_proto/symmetric70_proto.c
new file mode 100644
index 0000000000..daab4f0993
--- /dev/null
+++ b/keyboards/handwired/symmetric70_proto/symmetric70_proto.c
@@ -0,0 +1,25 @@
+/* Copyright 2020 mtei
+ *
+ * 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 "symmetric70_proto.h"
+
+__attribute__((weak)) void keyboard_post_init_user(void) {
+  // Customise these values to desired behaviour
+  debug_enable=true;
+  debug_matrix=true;
+  //debug_keyboard=true;
+  //debug_mouse=true;
+}
diff --git a/keyboards/handwired/symmetric70_proto/symmetric70_proto.h b/keyboards/handwired/symmetric70_proto/symmetric70_proto.h
new file mode 100644
index 0000000000..4a8539b50c
--- /dev/null
+++ b/keyboards/handwired/symmetric70_proto/symmetric70_proto.h
@@ -0,0 +1,41 @@
+/* Copyright 2020 mtei
+ *
+ * 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 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( \
+     L00, L01, L02, L03, L04, L05, L06,            R06, R05, R04, R03, R02, R01, R00, \
+      L10, L11, L12, L13, L14, L15, L16,          R16, R15, R14, R13, R12, R11, R10, \
+     L20, L21, L22, L23, L24, L25, L26,            R26, R25, R24, R23, R22, R21, R20, \
+    L30, L31, L32, L33, L34, L35, L36, L37,    R37, R36, R35, R34, R33, R32, R31, R30, \
+    L40,      L42, L43, L44, L45,      L47,    R47,      R45, R44, R43, R42,      R40  \
+) { \
+    { L00, L01,   L02, L03, L04, L05, L06,   KC_NO,   KC_NO, R06, R05, R04, R03, R02, R01,   R00 }, \
+    { L10, L11,   L12, L13, L14, L15, L16,   KC_NO,   KC_NO, R16, R15, R14, R13, R12, R11,   R10 }, \
+    { L20, L21,   L22, L23, L24, L25, L26,   KC_NO,   KC_NO, R26, R25, R24, R23, R22, R21,   R20 }, \
+    { L30, L31,   L32, L33, L34, L35, L36,   L37,     R37,   R36, R35, R34, R33, R32, R31,   R30 }, \
+    { L40, KC_NO, L42, L43, L44, L45, KC_NO, L47,     R47, KC_NO, R45, R44, R43, R42, KC_NO, R40 }  \
+}