[Keyboard] Add Helix rev3 (#10297)

* add Helix Type-R keyboard

* add default 4Rows keymaps

* cleanup 4row keymaps

* update about SPLIT_HAND_MATRIX_GRID and DIP_SWITCH_MATRIX_GRID

* change how to toggle mac/win

* update "Hardware Availability"

* add a section of "How to build"

* update "Hardware Supported"

* add dip-sw sections

* comment updated in function `encoder_update_user`

* revert how to toggle mac/win

* remove 4Rows variant build options

* rename helix_type_r to helix_5r

* add helix type-R 4Rows edition

* small modifications in keymap.c

* small modifications according to renaming

* change project root directory

* continuous work on ee2c39f1f9bffd97a2deb8f430746933a8d8684c

* cleanup unused files

* update info.json files

* cleanup 5rows' keymaps

* rename and update readme.md

* update config.h

* update helix's readme.md and rules.mk

* update keymaps' overviews

* split into each keyboard

* optimize firmware size for via keymaps

* fix LAYOUT to LAYOUT4 in 4rows/rev3.h

* remove LAYOUT_kc lines from both keymaps

* rename tyep-r to rev3

* enable to SPLIT_HAND_MATRIX_GRID_LOW_IS_RIGHT

* remove image from readme

* clean up for PR

* delete unnecessary comments

* change keyboard directory

* rename LAYOUT4 to LAYOUT for rev3_4rows

* Update keyboards/helix/rev3_4rows/keymaps/default/keymap.c

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

* Update keyboards/helix/rev3_4rows/keymaps/default/keymap.c

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

* Update keyboards/helix/rev3_4rows/keymaps/default/keymap.c

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

* Update keyboards/helix/rev3_4rows/keymaps/default/keymap.c

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

* Update keyboards/helix/rev3_4rows/keymaps/via/keymap.c

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

* Update keyboards/helix/rev3_4rows/keymaps/via/keymap.c

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

* Update keyboards/helix/rev3_4rows/keymaps/via/keymap.c

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

* Update keyboards/helix/rev3_4rows/rules.mk

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

* Update keyboards/helix/rev3_5rows/keymaps/default/keymap.c

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

* Update keyboards/helix/rev3_5rows/keymaps/default/keymap.c

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

* Update keyboards/helix/rev3_5rows/keymaps/via/keymap.c

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

* Update keyboards/helix/rev3_5rows/keymaps/via/keymap.c

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

* Update keyboards/helix/rev3_5rows/keymaps/via/keymap.c

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

* Update keyboards/helix/rev3_5rows/rules.mk

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

* Cleanup ADJUST Layer code for VIA

* change SEND_STRING to tap_code

* update readme

* moved the oled code from the keymap to the keyboard

* moved the dip switch code from the keymap to the keyboard

* change layout name for info.json

* Update keyboards/helix/rev3_4rows/rev3_4rows.c

Co-authored-by: Takeshi ISHII <2170248+mtei@users.noreply.github.com>

* Update keyboards/helix/rev3_4rows/rev3_4rows.c

Co-authored-by: Takeshi ISHII <2170248+mtei@users.noreply.github.com>

* Update keyboards/helix/rev3_4rows/rev3_4rows.h

Co-authored-by: Takeshi ISHII <2170248+mtei@users.noreply.github.com>

* Update keyboards/helix/rev3_5rows/rev3_5rows.c

Co-authored-by: Takeshi ISHII <2170248+mtei@users.noreply.github.com>

* Update keyboards/helix/rev3_5rows/rev3_5rows.c

Co-authored-by: Takeshi ISHII <2170248+mtei@users.noreply.github.com>

* Update keyboards/helix/rev3_5rows/keymaps/default/keymap.c

Co-authored-by: Takeshi ISHII <2170248+mtei@users.noreply.github.com>

* Update keyboards/helix/rev3_5rows/keymaps/via/keymap.c

Co-authored-by: Takeshi ISHII <2170248+mtei@users.noreply.github.com>

* Update keyboards/helix/rev3_5rows/keymaps/via/keymap.c

Co-authored-by: Takeshi ISHII <2170248+mtei@users.noreply.github.com>

* Update keyboards/helix/rev3_5rows/oled_display.c

Co-authored-by: Takeshi ISHII <2170248+mtei@users.noreply.github.com>

* Update keyboards/helix/rev3_5rows/keymaps/default/keymap.c

Co-authored-by: Takeshi ISHII <2170248+mtei@users.noreply.github.com>

* Update keyboards/helix/rev3_5rows/rev3_5rows.h

Co-authored-by: Takeshi ISHII <2170248+mtei@users.noreply.github.com>

* Update keyboards/helix/rev3_4rows/keymaps/default/keymap.c

Co-authored-by: Takeshi ISHII <2170248+mtei@users.noreply.github.com>

* Update keyboards/helix/rev3_4rows/keymaps/default/keymap.c

Co-authored-by: Takeshi ISHII <2170248+mtei@users.noreply.github.com>

* Update keyboards/helix/rev3_4rows/keymaps/via/keymap.c

Co-authored-by: Takeshi ISHII <2170248+mtei@users.noreply.github.com>

* Update keyboards/helix/rev3_4rows/keymaps/via/keymap.c

Co-authored-by: Takeshi ISHII <2170248+mtei@users.noreply.github.com>

* Update keyboards/helix/rev3_4rows/oled_display.c

Co-authored-by: Takeshi ISHII <2170248+mtei@users.noreply.github.com>

* Update keyboards/helix/rev3_4rows/oled_display.c

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

* Update keyboards/helix/rev3_5rows/config.h

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

* Update keyboards/helix/rev3_5rows/info.json

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

* Update keyboards/helix/rev3_4rows/oled_display.c

Co-authored-by: Takeshi ISHII <2170248+mtei@users.noreply.github.com>

* Update keyboards/helix/rev3_5rows/oled_display.c

Co-authored-by: Takeshi ISHII <2170248+mtei@users.noreply.github.com>

* Update keyboards/helix/rules.mk

Co-authored-by: Joel Challis <git@zvecr.com>

* Update keyboards/helix/rev3_4rows/config.h

Co-authored-by: Takeshi ISHII <2170248+mtei@users.noreply.github.com>

* Update keyboards/helix/rev3_4rows/oled_display.c

Co-authored-by: Takeshi ISHII <2170248+mtei@users.noreply.github.com>

* deleted key_count in info.json

Co-authored-by: keyaki-namiki <28521374+keyaki-namiki@users.noreply.github.com>
Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: Takeshi ISHII <2170248+mtei@users.noreply.github.com>
Co-authored-by: Joel Challis <git@zvecr.com>

7 files changed, 544 insertions, 0 deletions

diff --git a/keyboards/helix/rev3_4rows/keymaps/default/config.h b/keyboards/helix/rev3_4rows/keymaps/default/config.h
new file mode 100644
index 0000000000..ba446182d2
--- /dev/null
+++ b/keyboards/helix/rev3_4rows/keymaps/default/config.h
@@ -0,0 +1,19 @@
+/* Copyright 2020 yushakobo
+ *
+ * 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
+
+// place overrides here
diff --git a/keyboards/helix/rev3_4rows/keymaps/default/keymap.c b/keyboards/helix/rev3_4rows/keymaps/default/keymap.c
new file mode 100644
index 0000000000..a9a2c4acca
--- /dev/null
+++ b/keyboards/helix/rev3_4rows/keymaps/default/keymap.c
@@ -0,0 +1,193 @@
+/* Copyright 2020 yushakobo
+ *
+ * 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 {
+  _QWERTY = 0,
+  _LOWER,
+  _RAISE,
+  _ADJUST
+};
+
+// Defines the keycodes used by our macros in process_record_user
+enum custom_keycodes {
+  EISU = SAFE_RANGE,
+  KANA,
+  ADJUST,
+  RGBRST
+};
+
+#define LOWER MO(_LOWER)
+#define RAISE MO(_RAISE)
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+  /* Qwerty
+   * ,-----------------------------------------.             ,-----------------------------------------.
+   * | Tab  |   Q  |   W  |   E  |   R  |   T  |             |   Y  |   U  |   I  |   O  |   P  | Bksp |
+   * |------+------+------+------+------+------|             |------+------+------+------+------+------|
+   * | Ctrl |   A  |   S  |   D  |   F  |   G  |             |   H  |   J  |   K  |   L  |   ;  |  '   |
+   * |------+------+------+------+------+------|             |------+------+------+------+------+------|
+   * | Shift|   Z  |   X  |   C  |   V  |   B  |             |   N  |   M  |   ,  |   .  |   /  |Enter |
+   * |------+------+------+------+------+------+-------------+------+------+------+------+------+------|
+   * |Adjust| Esc  | Alt  | GUI  | EISU |Lower |Space |Space |Raise | KANA | Left | Down |  Up  |Right |
+   * `-------------------------------------------------------------------------------------------------'
+   */
+  [_QWERTY] = LAYOUT( \
+      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_LCTL, KC_A,    KC_S,    KC_D,    KC_F,    KC_G,                      KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT, \
+      KC_LSFT, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,                      KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_ENT , \
+      ADJUST,  KC_ESC,  KC_LALT, KC_LGUI, EISU,    LOWER,   KC_SPC,  KC_SPC,  RAISE,   KANA,    KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT \
+      ),
+
+  /* Lower
+   * ,-----------------------------------------.             ,-----------------------------------------.
+   * |   ~  |   !  |   @  |   #  |   $  |   %  |             |   ^  |   &  |   *  |   (  |   )  |      |
+   * |------+------+------+------+------+------|             |------+------+------+------+------+------|
+   * |      |  F1  |  F2  |  F3  |  F4  |  F5  |             |  F6  |   _  |   +  |   {  |   }  |  |   |
+   * |------+------+------+------+------+------|             |------+------+------+------+------+------|
+   * | CAPS |  F7  |  F8  |  F9  |  F10 |  F11 |             |  F12 |      |      | Home | End  |      |
+   * |------+------+------+------+------+------+-------------+------+------+------+------+------+------|
+   * |      |      |      |      |      |      |      |      |      |      | Next | Vol- | Vol+ | Play |
+   * `-------------------------------------------------------------------------------------------------'
+   */
+  [_LOWER] = LAYOUT( \
+      KC_TILD, KC_EXLM, KC_AT,   KC_HASH, KC_DLR,  KC_PERC,                   KC_CIRC, KC_AMPR, KC_ASTR, KC_LPRN, KC_RPRN, _______, \
+      _______, KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,                     KC_F6,   KC_UNDS, KC_PLUS, KC_LCBR, KC_RCBR, KC_PIPE, \
+      KC_CAPS, KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,                    KC_F12,  _______, _______, KC_HOME, KC_END,  _______, \
+      _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, KC_MNXT, KC_VOLD, KC_VOLU, KC_MPLY \
+      ),
+
+  /* Raise
+   * ,-----------------------------------------.             ,-----------------------------------------.
+   * |   `  |   1  |   2  |   3  |   4  |   5  |             |   6  |   7  |   8  |   9  |   0  | Del  |
+   * |------+------+------+------+------+------|             |------+------+------+------+------+------|
+   * |      |  F1  |  F2  |  F3  |  F4  |  F5  |             |  F6  |   -  |   =  |   [  |   ]  |  \   |
+   * |------+------+------+------+------+------|             |------+------+------+------+------+------|
+   * | CAPS |  F7  |  F8  |  F9  |  F10 |  F11 |             |  F12 |      |      |PageDn|PageUp|      |
+   * |------+------+------+------+------+------+-------------+------+------+------+------+------+------|
+   * |      |      |      |      |      |      |      |      |      |      | Next | Vol- | Vol+ | Play |
+   * `-------------------------------------------------------------------------------------------------'
+   */
+  [_RAISE] = LAYOUT( \
+      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_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,                     KC_F6,   KC_MINS, KC_EQL,  KC_LBRC, KC_RBRC, KC_BSLS, \
+      KC_CAPS, KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,                    KC_F12,  _______, _______, KC_PGDN, KC_PGUP, _______, \
+      _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, KC_MNXT, KC_VOLD, KC_VOLU, KC_MPLY \
+      ),
+
+  /* Adjust (Lower + Raise)
+   * ,-----------------------------------------.             ,-----------------------------------------.
+   * |  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |             |  F7  |  F8  |  F9  |  F10 |  F11 |  F12 |
+   * |------+------+------+------+------+------|             |------+------+------+------+------+------|
+   * |      | Reset|RGBRST|EEPRST|      |      |             |      |      |      |      |      |  Del |
+   * |------+------+------+------+------+------|             |------+------+------+------+------+------|
+   * |      |      |      |      |      | Mac  |             | Win  |      |RGB ON| HUE+ | SAT+ | VAL+ |
+   * |------+------+------+------+------+------+------+------+------+------+------+------+------+------|
+   * |      |      |      |      |      |      |      |      |      |      | MODE | HUE- | SAT- | VAL- |
+   * `-------------------------------------------------------------------------------------------------'
+   */
+  [_ADJUST] =  LAYOUT( \
+      KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,                     KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12, \
+      _______, RESET,   RGBRST,  EEP_RST, _______, _______,                   _______, _______, _______, _______, _______, KC_DEL, \
+      _______, _______, _______, _______, _______, AG_NORM,                   AG_SWAP, _______, RGB_TOG, RGB_HUI, RGB_SAI, RGB_VAI, \
+      _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, RGB_MOD, RGB_HUD, RGB_SAD, RGB_VAD \
+      )
+
+};
+
+void encoder_update_user(uint8_t index, bool clockwise) {
+    if (index == 0) { /* Left side encoder */
+        if (clockwise) {
+            tap_code(KC_PGDN);
+        } else {
+            tap_code(KC_PGUP);
+        }
+    } else if (index == 1) { /* Right side encoder */
+        if (clockwise) {
+            tap_code(KC_DOWN);
+        } else {
+            tap_code(KC_UP);
+        }
+    }
+}
+
+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 EISU:
+      if (record->event.pressed) {
+        if (is_mac_mode()) {
+          register_code(KC_LANG2);
+        }else{
+          tap_code16(LALT(KC_GRAVE));
+        }
+      } else {
+        unregister_code(KC_LANG2);
+      }
+      return false;
+      break;
+    case KANA:
+      if (record->event.pressed) {
+        if (is_mac_mode()) {
+          register_code(KC_LANG1);
+        }else{
+          tap_code16(LALT(KC_GRAVE));
+        }
+      } else {
+        unregister_code(KC_LANG1);
+      }
+      return false;
+      break;
+    case ADJUST:
+      if (record->event.pressed) {
+        layer_on(_LOWER);
+        layer_on(_RAISE);
+      } else {
+        layer_off(_LOWER);
+        layer_off(_RAISE);
+      }
+      break;
+    case RGBRST:
+      #ifdef RGBLIGHT_ENABLE
+        if (record->event.pressed) {
+          eeconfig_update_rgblight_default();
+          rgblight_enable();
+        }
+      #endif
+      break;
+  }
+  return true;
+}
+
+/*
+void matrix_init_user(void) {
+
+}
+
+void matrix_scan_user(void) {
+
+}
+
+bool led_update_user(led_t led_state) {
+    return true;
+}
+*/
diff --git a/keyboards/helix/rev3_4rows/keymaps/default/readme.md b/keyboards/helix/rev3_4rows/keymaps/default/readme.md
new file mode 100644
index 0000000000..e747096851
--- /dev/null
+++ b/keyboards/helix/rev3_4rows/keymaps/default/readme.md
@@ -0,0 +1,66 @@
+# The default keymap for Helix rev3 4rows
+
+### Qwerty Layer (Base)
+```
+,-----------------------------------------.             ,-----------------------------------------.
+| Tab  |   Q  |   W  |   E  |   R  |   T  |             |   Y  |   U  |   I  |   O  |   P  | Bksp |
+|------+------+------+------+------+------|             |------+------+------+------+------+------|
+| Ctrl |   A  |   S  |   D  |   F  |   G  |             |   H  |   J  |   K  |   L  |   ;  |  '   |
+|------+------+------+------+------+------|             |------+------+------+------+------+------|
+| Shift|   Z  |   X  |   C  |   V  |   B  |             |   N  |   M  |   ,  |   .  |   /  |Enter |
+|------+------+------+------+------+------+-------------+------+------+------+------+------+------|
+|Adjust| Esc  | Alt  | GUI  | EISU |Lower |Space |Space |Raise | KANA | Left | Down |  Up  |Right |
+`-------------------------------------------------------------------------------------------------'
+```
+### Lower Layer
+```
+,-----------------------------------------.             ,-----------------------------------------.
+|   ~  |   !  |   @  |   #  |   $  |   %  |             |   ^  |   &  |   *  |   (  |   )  |      |
+|------+------+------+------+------+------|             |------+------+------+------+------+------|
+|      |  F1  |  F2  |  F3  |  F4  |  F5  |             |  F6  |   _  |   +  |   {  |   }  |  |   |
+|------+------+------+------+------+------|             |------+------+------+------+------+------|
+| CAPS |  F7  |  F8  |  F9  |  F10 |  F11 |             |  F12 |      |      | Home | End  |      |
+|------+------+------+------+------+------+-------------+------+------+------+------+------+------|
+|      |      |      |      |      |      |      |      |      |      | Next | Vol- | Vol+ | Play |
+`-------------------------------------------------------------------------------------------------'
+```
+### Raise Layer
+```
+,-----------------------------------------.             ,-----------------------------------------.
+|   `  |   1  |   2  |   3  |   4  |   5  |             |   6  |   7  |   8  |   9  |   0  | Del  |
+|------+------+------+------+------+------|             |------+------+------+------+------+------|
+|      |  F1  |  F2  |  F3  |  F4  |  F5  |             |  F6  |   -  |   =  |   [  |   ]  |  \   |
+|------+------+------+------+------+------|             |------+------+------+------+------+------|
+| CAPS |  F7  |  F8  |  F9  |  F10 |  F11 |             |  F12 |      |      |PageDn|PageUp|      |
+|------+------+------+------+------+------+-------------+------+------+------+------+------+------|
+|      |      |      |      |      |      |      |      |      |      | Next | Vol- | Vol+ | Play |
+`-------------------------------------------------------------------------------------------------'
+```
+### Adjust Layer (Lower + Raise)
+```
+,-----------------------------------------.             ,-----------------------------------------.
+|  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |             |  F7  |  F8  |  F9  |  F10 |  F11 |  F12 |
+|------+------+------+------+------+------|             |------+------+------+------+------+------|
+|      | Reset|RGBRST|EEPRST|      |      |             |      |      |      |      |      |  Del |
+|------+------+------+------+------+------|             |------+------+------+------+------+------|
+|      |      |      |      |      | Mac  |             | Win  |      |RGB ON| HUE+ | SAT+ | VAL+ |
+|------+------+------+------+------+------+------+------+------+------+------+------+------+------|
+|      |      |      |      |      |      |      |      |      |      | MODE | HUE- | SAT- | VAL- |
+`-------------------------------------------------------------------------------------------------'
+```
+
+### Rotary Encoder Settings
+
+|L/R|Clockwise|Counter Clockwise|
+|---|---|---|
+|Left|Page Down|Page Up|
+|Right|Down|Up|
+
+### DipSW Settings
+
+|Switch No.||
+|---|---|
+|Left 1|Toggle Win/mac|
+|Left 2|Not assigned|
+|Right 1|Not assigned|
+|Right 2|Not assigned|
diff --git a/keyboards/helix/rev3_4rows/keymaps/via/config.h b/keyboards/helix/rev3_4rows/keymaps/via/config.h
new file mode 100644
index 0000000000..ba446182d2
--- /dev/null
+++ b/keyboards/helix/rev3_4rows/keymaps/via/config.h
@@ -0,0 +1,19 @@
+/* Copyright 2020 yushakobo
+ *
+ * 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
+
+// place overrides here
diff --git a/keyboards/helix/rev3_4rows/keymaps/via/keymap.c b/keyboards/helix/rev3_4rows/keymaps/via/keymap.c
new file mode 100644
index 0000000000..5611c96b34
--- /dev/null
+++ b/keyboards/helix/rev3_4rows/keymaps/via/keymap.c
@@ -0,0 +1,180 @@
+/* Copyright 2020 yushakobo
+ *
+ * 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 {
+  _QWERTY = 0,
+  _LOWER,
+  _RAISE,
+  _ADJUST
+};
+
+// Defines the keycodes used by our macros in process_record_user
+enum custom_keycodes {
+  EISU = SAFE_RANGE,
+  KANA,
+  ADJUST,
+  RGBRST
+};
+
+#define LOWER FN_MO13
+#define RAISE FN_MO23
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+  /* Qwerty
+   * ,-----------------------------------------.             ,-----------------------------------------.
+   * | Tab  |   Q  |   W  |   E  |   R  |   T  |             |   Y  |   U  |   I  |   O  |   P  | Bksp |
+   * |------+------+------+------+------+------|             |------+------+------+------+------+------|
+   * | Ctrl |   A  |   S  |   D  |   F  |   G  |             |   H  |   J  |   K  |   L  |   ;  |  '   |
+   * |------+------+------+------+------+------|             |------+------+------+------+------+------|
+   * | Shift|   Z  |   X  |   C  |   V  |   B  |             |   N  |   M  |   ,  |   .  |   /  |Enter |
+   * |------+------+------+------+------+------+-------------+------+------+------+------+------+------|
+   * |Adjust| Esc  | Alt  | GUI  | EISU |Lower |Space |Space |Raise | KANA | Left | Down |  Up  |Right |
+   * `-------------------------------------------------------------------------------------------------'
+   */
+  [_QWERTY] = LAYOUT( \
+      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_LCTL, 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 , \
+      MO(_ADJUST), KC_ESC,  KC_LALT, KC_LGUI, EISU,    LOWER,   KC_SPC,  KC_SPC,  RAISE,   KANA,    KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT \
+      ),
+
+  /* Lower
+   * ,-----------------------------------------.             ,-----------------------------------------.
+   * |   ~  |   !  |   @  |   #  |   $  |   %  |             |   ^  |   &  |   *  |   (  |   )  |      |
+   * |------+------+------+------+------+------|             |------+------+------+------+------+------|
+   * |      |  F1  |  F2  |  F3  |  F4  |  F5  |             |  F6  |   _  |   +  |   {  |   }  |  |   |
+   * |------+------+------+------+------+------|             |------+------+------+------+------+------|
+   * | CAPS |  F7  |  F8  |  F9  |  F10 |  F11 |             |  F12 |      |      | Home | End  |      |
+   * |------+------+------+------+------+------+-------------+------+------+------+------+------+------|
+   * |      |      |      |      |      |      |      |      |      |      | Next | Vol- | Vol+ | Play |
+   * `-------------------------------------------------------------------------------------------------'
+   */
+  [_LOWER] = LAYOUT( \
+      KC_TILD, KC_EXLM, KC_AT,   KC_HASH, KC_DLR,  KC_PERC,                   KC_CIRC, KC_AMPR, KC_ASTR, KC_LPRN, KC_RPRN, _______, \
+      _______, KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,                     KC_F6,   KC_UNDS, KC_PLUS, KC_LCBR, KC_RCBR, KC_PIPE, \
+      KC_CAPS, KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,                    KC_F12,  _______, _______, KC_HOME, KC_END,  _______, \
+      _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, KC_MNXT, KC_VOLD, KC_VOLU, KC_MPLY \
+      ),
+
+  /* Raise
+   * ,-----------------------------------------.             ,-----------------------------------------.
+   * |   `  |   1  |   2  |   3  |   4  |   5  |             |   6  |   7  |   8  |   9  |   0  | Del  |
+   * |------+------+------+------+------+------|             |------+------+------+------+------+------|
+   * |      |  F1  |  F2  |  F3  |  F4  |  F5  |             |  F6  |   -  |   =  |   [  |   ]  |  \   |
+   * |------+------+------+------+------+------|             |------+------+------+------+------+------|
+   * | CAPS |  F7  |  F8  |  F9  |  F10 |  F11 |             |  F12 |      |      |PageDn|PageUp|      |
+   * |------+------+------+------+------+------+-------------+------+------+------+------+------+------|
+   * |      |      |      |      |      |      |      |      |      |      | Next | Vol- | Vol+ | Play |
+   * `-------------------------------------------------------------------------------------------------'
+   */
+  [_RAISE] = LAYOUT( \
+      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_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,                     KC_F6,   KC_MINS, KC_EQL,  KC_LBRC, KC_RBRC, KC_BSLS, \
+      KC_CAPS, KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,                    KC_F12,  _______, _______, KC_PGDN, KC_PGUP, _______, \
+      _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, KC_MNXT, KC_VOLD, KC_VOLU, KC_MPLY \
+      ),
+
+  /* Adjust (Lower + Raise)
+   * ,-----------------------------------------.             ,-----------------------------------------.
+   * |  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |             |  F7  |  F8  |  F9  |  F10 |  F11 |  F12 |
+   * |------+------+------+------+------+------|             |------+------+------+------+------+------|
+   * |      | Reset|RGBRST|      |      |      |             |      |      |      |      |      |  Del |
+   * |------+------+------+------+------+------|             |------+------+------+------+------+------|
+   * |      |      |      |      |      | Mac  |             | Win  |      |RGB ON| HUE+ | SAT+ | VAL+ |
+   * |------+------+------+------+------+------+------+------+------+------+------+------+------+------|
+   * |      |      |      |      |      |      |      |      |      |      | MODE | HUE- | SAT- | VAL- |
+   * `-------------------------------------------------------------------------------------------------'
+   */
+  [_ADJUST] =  LAYOUT( \
+      KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,                     KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12, \
+      _______, RESET,   RGBRST,  _______, _______, _______,                   _______, _______, _______, _______, _______, KC_DEL, \
+      _______, _______, _______, _______, _______, AG_NORM,                   AG_SWAP, _______, RGB_TOG, RGB_HUI, RGB_SAI, RGB_VAI, \
+      _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, RGB_MOD, RGB_HUD, RGB_SAD, RGB_VAD \
+      )
+
+};
+
+void encoder_update_user(uint8_t index, bool clockwise) {
+    if (index == 0) { /* Left side encoder */
+        if (clockwise) {
+            tap_code(KC_PGDN);
+        } else {
+            tap_code(KC_PGUP);
+        }
+    } else if (index == 1) { /* Right side encoder */
+        if (clockwise) {
+            tap_code(KC_DOWN);
+        } else {
+            tap_code(KC_UP);
+        }
+    }
+}
+
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+  switch (keycode) {
+    case EISU:
+      if (record->event.pressed) {
+        if (is_mac_mode()) {
+          register_code(KC_LANG2);
+        }else{
+          tap_code16(LALT(KC_GRAVE));
+        }
+      } else {
+        unregister_code(KC_LANG2);
+      }
+      return false;
+      break;
+    case KANA:
+      if (record->event.pressed) {
+        if (is_mac_mode()) {
+          register_code(KC_LANG1);
+        }else{
+          tap_code16(LALT(KC_GRAVE));
+        }
+      } else {
+        unregister_code(KC_LANG1);
+      }
+      return false;
+      break;
+    case RGBRST:
+      #ifdef RGBLIGHT_ENABLE
+        if (record->event.pressed) {
+          eeconfig_update_rgblight_default();
+          rgblight_enable();
+        }
+      #endif
+      break;
+  }
+  return true;
+}
+
+/*
+void matrix_init_user(void) {
+
+}
+
+void matrix_scan_user(void) {
+
+}
+
+bool led_update_user(led_t led_state) {
+    return true;
+}
+*/
diff --git a/keyboards/helix/rev3_4rows/keymaps/via/readme.md b/keyboards/helix/rev3_4rows/keymaps/via/readme.md
new file mode 100644
index 0000000000..34030075f8
--- /dev/null
+++ b/keyboards/helix/rev3_4rows/keymaps/via/readme.md
@@ -0,0 +1,66 @@
+# The default VIA keymap for Helix rev3 4rows
+
+### Qwerty Layer (Base)
+```
+,-----------------------------------------.             ,-----------------------------------------.
+| Tab  |   Q  |   W  |   E  |   R  |   T  |             |   Y  |   U  |   I  |   O  |   P  | Bksp |
+|------+------+------+------+------+------|             |------+------+------+------+------+------|
+| Ctrl |   A  |   S  |   D  |   F  |   G  |             |   H  |   J  |   K  |   L  |   ;  |  '   |
+|------+------+------+------+------+------|             |------+------+------+------+------+------|
+| Shift|   Z  |   X  |   C  |   V  |   B  |             |   N  |   M  |   ,  |   .  |   /  |Enter |
+|------+------+------+------+------+------+-------------+------+------+------+------+------+------|
+|Adjust| Esc  | Alt  | GUI  | EISU |Lower |Space |Space |Raise | KANA | Left | Down |  Up  |Right |
+`-------------------------------------------------------------------------------------------------'
+```
+### Lower Layer
+```
+,-----------------------------------------.             ,-----------------------------------------.
+|   ~  |   !  |   @  |   #  |   $  |   %  |             |   ^  |   &  |   *  |   (  |   )  |      |
+|------+------+------+------+------+------|             |------+------+------+------+------+------|
+|      |  F1  |  F2  |  F3  |  F4  |  F5  |             |  F6  |   _  |   +  |   {  |   }  |  |   |
+|------+------+------+------+------+------|             |------+------+------+------+------+------|
+| CAPS |  F7  |  F8  |  F9  |  F10 |  F11 |             |  F12 |      |      | Home | End  |      |
+|------+------+------+------+------+------+-------------+------+------+------+------+------+------|
+|      |      |      |      |      |      |      |      |      |      | Next | Vol- | Vol+ | Play |
+`-------------------------------------------------------------------------------------------------'
+```
+### Raise Layer
+```
+,-----------------------------------------.             ,-----------------------------------------.
+|   `  |   1  |   2  |   3  |   4  |   5  |             |   6  |   7  |   8  |   9  |   0  | Del  |
+|------+------+------+------+------+------|             |------+------+------+------+------+------|
+|      |  F1  |  F2  |  F3  |  F4  |  F5  |             |  F6  |   -  |   =  |   [  |   ]  |  \   |
+|------+------+------+------+------+------|             |------+------+------+------+------+------|
+| CAPS |  F7  |  F8  |  F9  |  F10 |  F11 |             |  F12 |      |      |PageDn|PageUp|      |
+|------+------+------+------+------+------+-------------+------+------+------+------+------+------|
+|      |      |      |      |      |      |      |      |      |      | Next | Vol- | Vol+ | Play |
+`-------------------------------------------------------------------------------------------------'
+```
+### Adjust Layer (Lower + Raise)
+```
+,-----------------------------------------.             ,-----------------------------------------.
+|  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |             |  F7  |  F8  |  F9  |  F10 |  F11 |  F12 |
+|------+------+------+------+------+------|             |------+------+------+------+------+------|
+|      | Reset|RGBRST|      |      |      |             |      |      |      |      |      |  Del |
+|------+------+------+------+------+------|             |------+------+------+------+------+------|
+|      |      |      |      |      | Mac  |             | Win  |      |RGB ON| HUE+ | SAT+ | VAL+ |
+|------+------+------+------+------+------+------+------+------+------+------+------+------+------|
+|      |      |      |      |      |      |      |      |      |      | MODE | HUE- | SAT- | VAL- |
+`-------------------------------------------------------------------------------------------------'
+```
+
+### Rotary Encoder Settings
+
+|L/R|Clockwise|Counter Clockwise|
+|---|---|---|
+|Left|Page Down|Page Up|
+|Right|Down|Up|
+
+### DipSW Settings
+
+|Switch No.||
+|---|---|
+|Left 1|Toggle Win/mac|
+|Left 2|Not assigned|
+|Right 1|Not assigned|
+|Right 2|Not assigned|
diff --git a/keyboards/helix/rev3_4rows/keymaps/via/rules.mk b/keyboards/helix/rev3_4rows/keymaps/via/rules.mk
new file mode 100644
index 0000000000..1e5b99807c
--- /dev/null
+++ b/keyboards/helix/rev3_4rows/keymaps/via/rules.mk
@@ -0,0 +1 @@
+VIA_ENABLE = yes