[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>

30 files changed, 2158 insertions, 3 deletions

diff --git a/keyboards/helix/helix.h b/keyboards/helix/helix.h
index d3d3b04169..b900d975d2 100644
--- a/keyboards/helix/helix.h
+++ b/keyboards/helix/helix.h
@@ -8,6 +8,12 @@
 #ifdef KEYBOARD_helix_rev2
     #include "rev2.h"
 #endif
+#ifdef KEYBOARD_helix_rev3_5rows
+    #include "rev3_5rows.h"
+#endif
+#ifdef KEYBOARD_helix_rev3_4rows
+    #include "rev3_4rows.h"
+#endif
 #ifdef KEYBOARD_helix_pico
     #include "pico.h"
 #endif
diff --git a/keyboards/helix/readme.md b/keyboards/helix/readme.md
index e1161cfdf1..0c190f7626 100644
--- a/keyboards/helix/readme.md
+++ b/keyboards/helix/readme.md
@@ -5,9 +5,9 @@ Helix
 
 A compact split ortholinear keyboard.
 
-Keyboard Maintainer: [Makoto Kurauchi](https://github.com/MakotoKurauchi/) [@pluis9](https://twitter.com/pluis9)  
-Hardware Supported: Helix PCB Alpha, Beta, Pro Micro  
-Hardware Availability: [PCB & Case Data](https://github.com/MakotoKurauchi/helix), [Yushakobo Shop](https://yushakobo.jp/shop/), [Little Keyboards](https://littlekeyboards.com/collections/helix) 
+Keyboard Maintainer: [Makoto Kurauchi](https://github.com/MakotoKurauchi/) [@pluis9](https://twitter.com/pluis9) [yushakobo](https://github.com/yushakobo)
+Hardware Supported: Helix PCB Alpha, Beta, Rev3, Pro Micro  
+Hardware Availability: [PCB & Case Data](https://github.com/MakotoKurauchi/helix), [Yushakobo Shop](https://yushakobo.jp/shop/), [Little Keyboards](https://littlekeyboards.com/collections/helix)
 
 ## How to build
  * [Helix how to Customize and Compile](rev2/keymaps/default/readme.md#customize)
diff --git a/keyboards/helix/rev3_4rows/config.h b/keyboards/helix/rev3_4rows/config.h
new file mode 100644
index 0000000000..d2de347b9e
--- /dev/null
+++ b/keyboards/helix/rev3_4rows/config.h
@@ -0,0 +1,245 @@
+/*
+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
+
+#include "config_common.h"
+#include <stdio.h>
+
+/* USB Device descriptor parameter */
+#define VENDOR_ID 0x3265 //yushakobo
+#define PRODUCT_ID 0x0004 //Helix rev3 4rows
+#define DEVICE_VER 0x0001
+#define MANUFACTURER yushakobo
+#define PRODUCT Helix rev3 4rows
+
+/* 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 { D4, C6, D7, E6 }
+#define MATRIX_COL_PINS { F4, F5, F6, F7, B1, B3, B2 }
+#define UNUSED_PINS
+
+/* COL2ROW, ROW2COL*/
+#define DIODE_DIRECTION COL2ROW
+
+/* Split hand configration */
+#define SPLIT_HAND_MATRIX_GRID D7,B2
+
+/* Dip switch on matrix grid */
+#define DIP_SWITCH_MATRIX_GRID { {0,6}, {1,6}, {5,6}, {6,6} }
+
+/*
+ * Split Keyboard specific options, make sure you have 'SPLIT_KEYBOARD = yes' in your rules.mk, and define SOFT_SERIAL_PIN.
+ */
+#define SOFT_SERIAL_PIN D2  // or D1, D2, D3, E6
+
+#define RGB_DI_PIN D3
+#define RGBLED_NUM 50 // Number of LEDs
+
+#ifdef RGB_MATRIX_ENABLE
+  #define DRIVER_LED_TOTAL RGBLED_NUM
+#   define RGB_MATRIX_KEYPRESSES // reacts to keypresses
+// #   define RGB_MATRIX_KEYRELEASES // reacts to keyreleases (instead of keypresses)
+// #   define RGB_DISABLE_AFTER_TIMEOUT 0 // number of ticks to wait until disabling effects
+#   define RGB_DISABLE_WHEN_USB_SUSPENDED true // turn off effects when suspended
+#   define RGB_MATRIX_FRAMEBUFFER_EFFECTS
+// #   define RGB_MATRIX_LED_PROCESS_LIMIT (DRIVER_LED_TOTAL + 4) / 5 // limits the number of LEDs to process in an animation per task run (increases keyboard responsiveness)
+// #   define RGB_MATRIX_LED_FLUSH_LIMIT 16 // limits in milliseconds how frequently an animation will update the LEDs. 16 (16ms) is equivalent to limiting to 60fps (increases keyboard responsiveness)
+#    define RGB_MATRIX_MAXIMUM_BRIGHTNESS 150 // limits maximum brightness of LEDs to 150 out of 255. Higher may cause the controller to crash.
+#    define RGB_MATRIX_HUE_STEP 8
+#    define RGB_MATRIX_SAT_STEP 8
+#    define RGB_MATRIX_VAL_STEP 8
+#    define RGB_MATRIX_SPD_STEP 10
+#endif
+
+#ifdef RGBLIGHT_ENABLE
+  #define RGBLIGHT_SPLIT
+  #define RGBLED_SPLIT { 25, 25 }
+//   #define RGBLIGHT_HUE_STEP 8
+//   #define RGBLIGHT_SAT_STEP 8
+//   #define RGBLIGHT_VAL_STEP 8
+   #define RGBLIGHT_LIMIT_VAL 120 /* 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
+#endif
+
+/* Custom font */
+#define OLED_FONT_H "keyboards/helix/common/glcdfont.c"
+
+/* Encorder */
+#define ENCODERS_PAD_A { B6 }
+#define ENCODERS_PAD_B { B5 }
+
+/* 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
+
+/* disable these deprecated features by default */
+#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 0
diff --git a/keyboards/helix/rev3_4rows/info.json b/keyboards/helix/rev3_4rows/info.json
new file mode 100644
index 0000000000..0b927510d9
--- /dev/null
+++ b/keyboards/helix/rev3_4rows/info.json
@@ -0,0 +1,17 @@
+{
+  "keyboard_name": "Helix rev3 4rows",
+  "url": "",
+  "maintainer": "yushakobo",
+  "width": 15,
+  "height": 4,
+  "layouts": {
+    "LAYOUT_4": {
+      "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":9, "y":0}, {"x":10, "y":0}, {"x":11, "y":0}, {"x":12, "y":0}, {"x":13, "y":0}, {"x":14, "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":9, "y":1}, {"x":10, "y":1}, {"x":11, "y":1}, {"x":12, "y":1}, {"x":13, "y":1}, {"x":14, "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":9, "y":2}, {"x":10, "y":2}, {"x":11, "y":2}, {"x":12, "y":2}, {"x":13, "y":2}, {"x":14, "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":8, "y":3}, {"x":9, "y":3}, {"x":10, "y":3}, {"x":11, "y":3}, {"x":12, "y":3}, {"x":13, "y":3}, {"x":14, "y":3}
+      ]
+    }
+  }
+}
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
diff --git a/keyboards/helix/rev3_4rows/oled_display.c b/keyboards/helix/rev3_4rows/oled_display.c
new file mode 100644
index 0000000000..7716a172c9
--- /dev/null
+++ b/keyboards/helix/rev3_4rows/oled_display.c
@@ -0,0 +1,123 @@
+/* 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/>.
+ */
+
+/*
+   How to Customize
+
+   $ make helix/rev3_4rows:YOUR_KEYMAP:clean
+   $ cp keyboards/helix/rev3_4rows/oled_display.c keyboards/helix/rev3_4rows/keymaps/YOUR_KEYMAP
+
+   $ edit keyboards/helix/rev3_4rows/keymaps/YOUR_KEYMAP/oled_display.c
+   $ make helix/rev3_4rows:YOUR_KEYMAP
+   $ make helix/rev3_4rows:YOUR_KEYMAP:flash
+ */
+
+#include QMK_KEYBOARD_H
+
+// Defines names for use in layer keycodes and the keymap
+enum layer_names {
+  _QWERTY = 0,
+  _LOWER,
+  _RAISE,
+  _ADJUST
+};
+
+#ifdef OLED_DRIVER_ENABLE
+
+void render_status(void) {
+
+  // Render to mode icon
+  static const char os_logo[][2][3] PROGMEM  ={{{0x95,0x96,0},{0xb5,0xb6,0}},{{0x97,0x98,0},{0xb7,0xb8,0}}};
+  if (is_mac_mode()) {
+    oled_write_P(os_logo[0][0], false);
+    oled_write_P(PSTR("\n"), false);
+    oled_write_P(os_logo[0][1], false);
+  }else{
+    oled_write_P(os_logo[1][0], false);
+    oled_write_P(PSTR("\n"), false);
+    oled_write_P(os_logo[1][1], false);
+  }
+
+  oled_write_P(PSTR(" "), false);
+
+  // Host Keyboard Layer Status
+  oled_write_P(PSTR("Layer: "), false);
+
+  switch (get_highest_layer(layer_state)) {
+      case _QWERTY:
+          oled_write_P(PSTR("Default\n"), false);
+          break;
+      case _RAISE:
+          oled_write_P(PSTR("Raise\n"), false);
+          break;
+      case _LOWER:
+          oled_write_P(PSTR("Lower\n"), false);
+          break;
+      case _ADJUST:
+          oled_write_P(PSTR("Adjust\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);
+  }
+
+  oled_write_P(PSTR("\n"), 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("CAP ") : PSTR("    "), false);
+  oled_write_P(led_state.scroll_lock ? PSTR("SCR ") : PSTR("    "), false);
+}
+
+
+static void render_logo(void) {
+    static const char PROGMEM qmk_logo[] = {
+        0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F, 0x90, 0x91, 0x92, 0x93, 0x94,
+        0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8, 0xA9, 0xAA, 0xAB, 0xAC, 0xAD, 0xAE, 0xAF, 0xB0, 0xB1, 0xB2, 0xB3, 0xB4,
+        0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF, 0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0x00
+    };
+
+    oled_write_P(qmk_logo, false);
+}
+
+static void render_rgbled_status(bool full) {
+#ifdef RGBLIGHT_ENABLE
+  char buf[30];
+  if (RGBLIGHT_MODES > 1 && rgblight_is_enabled()) {
+      if (full) {
+          snprintf(buf, sizeof(buf), " LED %2d: %d,%d,%d ",
+                   rgblight_get_mode(),
+                   rgblight_get_hue()/RGBLIGHT_HUE_STEP,
+                   rgblight_get_sat()/RGBLIGHT_SAT_STEP,
+                   rgblight_get_val()/RGBLIGHT_VAL_STEP);
+      } else {
+          snprintf(buf, sizeof(buf), "[%2d] ", rgblight_get_mode());
+      }
+      oled_write(buf, false);
+  }
+#endif
+}
+
+void oled_task_user(void) {
+  if(is_keyboard_master()){
+    render_status();
+  }else{
+    render_logo();
+    render_rgbled_status(true);
+  }
+}
+#endif
diff --git a/keyboards/helix/rev3_4rows/readme.md b/keyboards/helix/rev3_4rows/readme.md
new file mode 100644
index 0000000000..25e856badf
--- /dev/null
+++ b/keyboards/helix/rev3_4rows/readme.md
@@ -0,0 +1,13 @@
+# Helix rev3 4rows
+
+A compact split ortholinear keyboard.
+
+* Keyboard Maintainer: [yushakobo](https://github.com/yushakobo)
+* Hardware Supported: Helix rev3 PCBs, Pro Micro
+* Hardware Availability: (Under preparation)
+
+Make example for this keyboard (after setting up your build environment):
+
+    make helix/rev3_4rows: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/helix/rev3_4rows/rev3_4rows.c b/keyboards/helix/rev3_4rows/rev3_4rows.c
new file mode 100644
index 0000000000..cf183366d6
--- /dev/null
+++ b/keyboards/helix/rev3_4rows/rev3_4rows.c
@@ -0,0 +1,48 @@
+/* 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 "helix.h"
+
+bool is_mac_mode(void) {
+    return keymap_config.swap_lalt_lgui == false;
+}
+
+void set_mac_mode(bool macmode) {
+    if (macmode) {
+        /* The result is the same as pressing the AG_NORM(=MAGIC_UNSWAP_ALT_GUI) key. */
+        /* https://github.com/qmk/qmk_firmware/blob/fb4a6ad30ea7a648acd59793ed4a30c3a8d8dc32/quantum/process_keycode/process_magic.c#L123-L124 */
+        keymap_config.swap_lalt_lgui = keymap_config.swap_ralt_rgui = false;
+    } else {
+        /* The result is the same as pressing the AG_SWAP(=MAGIC_SWAP_ALT_GUI) key. */
+        /* https://github.com/qmk/qmk_firmware/blob/fb4a6ad30ea7a648acd59793ed4a30c3a8d8dc32/quantum/process_keycode/process_magic.c#L80-L81 */
+        keymap_config.swap_lalt_lgui = keymap_config.swap_ralt_rgui = true;
+    }
+}
+
+void dip_switch_update_kb(uint8_t index, bool active) {
+    switch (index) {
+    case 0:
+        if(active) { // Left no.1  Helix rev3 common
+            set_mac_mode(false);
+        } else {
+            set_mac_mode(true);
+        }
+        break;
+    default: // Left no.2 or Right no.1 or Right no.2 for user/keymap
+        dip_switch_update_user(index, active);
+        break;
+    }
+}
diff --git a/keyboards/helix/rev3_4rows/rev3_4rows.h b/keyboards/helix/rev3_4rows/rev3_4rows.h
new file mode 100644
index 0000000000..dc1e2d5da4
--- /dev/null
+++ b/keyboards/helix/rev3_4rows/rev3_4rows.h
@@ -0,0 +1,47 @@
+/* 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
+
+#include "quantum.h"
+
+bool is_mac_mode(void);
+void set_mac_mode(bool macmode);
+
+/* 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,           R00, R01, R02, R03, R04, R05, \
+  L10, L11, L12, L13, L14, L15,           R10, R11, R12, R13, R14, R15, \
+  L20, L21, L22, L23, L24, L25,           R20, R21, R22, R23, R24, R25, \
+  L30, L31, L32, L33, L34, L35, L36, R36, R30, R31, R32, R33, R34, R35 \
+  ) \
+  { \
+    { L00, L01, L02, L03, L04, L05, KC_NO }, \
+    { L10, L11, L12, L13, L14, L15, KC_NO }, \
+    { L20, L21, L22, L23, L24, L25, KC_NO }, \
+    { L30, L31, L32, L33, L34, L35, L36 }, \
+    { R05, R04, R03, R02, R01, R00, KC_NO }, \
+    { R15, R14, R13, R12, R11, R10, KC_NO }, \
+    { R25, R24, R23, R22, R21, R20, KC_NO }, \
+    { R35, R34, R33, R32, R31, R30, R36 }, \
+ }
diff --git a/keyboards/helix/rev3_4rows/rules.mk b/keyboards/helix/rev3_4rows/rules.mk
new file mode 100644
index 0000000000..7168f174fe
--- /dev/null
+++ b/keyboards/helix/rev3_4rows/rules.mk
@@ -0,0 +1,10 @@
+EXTRAKEY_ENABLE = yes    # Audio control and System control
+RGBLIGHT_ENABLE = yes   # Enable keyboard RGB underglow
+SPLIT_KEYBOARD = yes
+#RGB_MATRIX_ENABLE = WS2812
+OLED_DRIVER_ENABLE = yes
+ENCODER_ENABLE = yes
+DIP_SWITCH_ENABLE = yes
+LTO_ENABLE = yes
+
+SRC += oled_display.c
diff --git a/keyboards/helix/rev3_5rows/config.h b/keyboards/helix/rev3_5rows/config.h
new file mode 100644
index 0000000000..bea914000a
--- /dev/null
+++ b/keyboards/helix/rev3_5rows/config.h
@@ -0,0 +1,246 @@
+/*
+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
+
+#include "config_common.h"
+#include <stdio.h>
+
+/* USB Device descriptor parameter */
+#define VENDOR_ID 0x3265 //yushakobo
+#define PRODUCT_ID 0x0003 //Helix rev3 5rows
+#define DEVICE_VER 0x0001
+#define MANUFACTURER yushakobo
+#define PRODUCT Helix rev3 5rows
+
+/* key matrix size */
+#define MATRIX_ROWS 10
+#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 { D4, C6, D7, E6, B4 }
+#define MATRIX_COL_PINS { F4, F5, F6, F7, B1, B3, B2 }
+#define UNUSED_PINS
+
+/* COL2ROW, ROW2COL*/
+#define DIODE_DIRECTION COL2ROW
+
+/* Split hand configration */
+#define SPLIT_HAND_MATRIX_GRID D7,B2
+#define SPLIT_HAND_MATRIX_GRID_LOW_IS_RIGHT
+
+/* Dip switch on matrix grid */
+#define DIP_SWITCH_MATRIX_GRID { {0,6}, {1,6}, {5,6}, {6,6} }
+
+/*
+ * Split Keyboard specific options, make sure you have 'SPLIT_KEYBOARD = yes' in your rules.mk, and define SOFT_SERIAL_PIN.
+ */
+#define SOFT_SERIAL_PIN D2  // or D1, D2, D3, E6
+
+#define RGB_DI_PIN D3
+#define RGBLED_NUM 64 // Number of LEDs
+
+#ifdef RGB_MATRIX_ENABLE
+  #define DRIVER_LED_TOTAL RGBLED_NUM
+#   define RGB_MATRIX_KEYPRESSES // reacts to keypresses
+// #   define RGB_MATRIX_KEYRELEASES // reacts to keyreleases (instead of keypresses)
+// #   define RGB_DISABLE_AFTER_TIMEOUT 0 // number of ticks to wait until disabling effects
+#   define RGB_DISABLE_WHEN_USB_SUSPENDED true // turn off effects when suspended
+#   define RGB_MATRIX_FRAMEBUFFER_EFFECTS
+// #   define RGB_MATRIX_LED_PROCESS_LIMIT (DRIVER_LED_TOTAL + 4) / 5 // limits the number of LEDs to process in an animation per task run (increases keyboard responsiveness)
+// #   define RGB_MATRIX_LED_FLUSH_LIMIT 16 // limits in milliseconds how frequently an animation will update the LEDs. 16 (16ms) is equivalent to limiting to 60fps (increases keyboard responsiveness)
+#    define RGB_MATRIX_MAXIMUM_BRIGHTNESS 150 // limits maximum brightness of LEDs to 150 out of 255. Higher may cause the controller to crash.
+#    define RGB_MATRIX_HUE_STEP 8
+#    define RGB_MATRIX_SAT_STEP 8
+#    define RGB_MATRIX_VAL_STEP 8
+#    define RGB_MATRIX_SPD_STEP 10
+#endif
+
+#ifdef RGBLIGHT_ENABLE
+  #define RGBLIGHT_SPLIT
+  #define RGBLED_SPLIT { 32, 32 }
+//   #define RGBLIGHT_HUE_STEP 8
+//   #define RGBLIGHT_SAT_STEP 8
+//   #define RGBLIGHT_VAL_STEP 8
+   #define RGBLIGHT_LIMIT_VAL 120 /* 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
+#endif
+
+/* Custom font */
+#define OLED_FONT_H "keyboards/helix/common/glcdfont.c"
+
+/* Encorder */
+#define ENCODERS_PAD_A { B6 }
+#define ENCODERS_PAD_B { B5 }
+
+/* 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
+
+/* disable these deprecated features by default */
+#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 0
diff --git a/keyboards/helix/rev3_5rows/info.json b/keyboards/helix/rev3_5rows/info.json
new file mode 100644
index 0000000000..14a6199442
--- /dev/null
+++ b/keyboards/helix/rev3_5rows/info.json
@@ -0,0 +1,18 @@
+{
+  "keyboard_name": "Helix rev3 5rows",
+  "url": "",
+  "maintainer": "yushakobo",
+  "width": 15,
+  "height": 5,
+  "layouts": {
+    "LAYOUT": {
+      "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":9, "y":0}, {"x":10, "y":0}, {"x":11, "y":0}, {"x":12, "y":0}, {"x":13, "y":0}, {"x":14, "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":9, "y":1}, {"x":10, "y":1}, {"x":11, "y":1}, {"x":12, "y":1}, {"x":13, "y":1}, {"x":14, "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":9, "y":2}, {"x":10, "y":2}, {"x":11, "y":2}, {"x":12, "y":2}, {"x":13, "y":2}, {"x":14, "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":8, "y":3}, {"x":9, "y":3}, {"x":10, "y":3}, {"x":11, "y":3}, {"x":12, "y":3}, {"x":13, "y":3}, {"x":14, "y":3},
+        {"x":0, "y":4}, {"x":1, "y":4}, {"x":2, "y":4}, {"x":3, "y":4}, {"x":4, "y":4}, {"x":5, "y":4}, {"x":6, "y":4}, {"x":8, "y":4}, {"x":9, "y":4}, {"x":10, "y":4}, {"x":11, "y":4}, {"x":12, "y":4}, {"x":13, "y":4}, {"x":14, "y":4}
+      ]
+    }
+  }
+}
diff --git a/keyboards/helix/rev3_5rows/keymaps/default/config.h b/keyboards/helix/rev3_5rows/keymaps/default/config.h
new file mode 100644
index 0000000000..ba446182d2
--- /dev/null
+++ b/keyboards/helix/rev3_5rows/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_5rows/keymaps/default/keymap.c b/keyboards/helix/rev3_5rows/keymaps/default/keymap.c
new file mode 100644
index 0000000000..18b5591373
--- /dev/null
+++ b/keyboards/helix/rev3_5rows/keymaps/default/keymap.c
@@ -0,0 +1,203 @@
+/* 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
+   * ,-----------------------------------------.             ,-----------------------------------------.
+   * |   `  |   1  |   2  |   3  |   4  |   5  |             |   6  |   7  |   8  |   9  |   0  | Del  |
+   * |------+------+------+------+------+------|             |------+------+------+------+------+------|
+   * | 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_GRV,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,                      KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_DEL, \
+      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_LBRC, KC_RBRC, 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_LPRN, KC_RPRN, KC_F12,  _______, _______, KC_HOME, KC_END,  _______, \
+      _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, KC_MNXT, KC_VOLD, KC_VOLU, KC_MPLY \
+      ),
+
+  /* Raise
+   * ,-----------------------------------------.             ,-----------------------------------------.
+   * |      |      |      |      |      |      |             |      |      |      |      |      | Bksp |
+   * |------+------+------+------+------+------|             |------+------+------+------+------+------|
+   * |   `  |   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_BSPC, \
+      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_5rows/keymaps/default/readme.md b/keyboards/helix/rev3_5rows/keymaps/default/readme.md
new file mode 100644
index 0000000000..423443ba71
--- /dev/null
+++ b/keyboards/helix/rev3_5rows/keymaps/default/readme.md
@@ -0,0 +1,81 @@
+# The default keymap for Helix rev3 5rows
+
+### Qwerty Layer (Base)
+```
+,-----------------------------------------.             ,-----------------------------------------.
+|   `  |   1  |   2  |   3  |   4  |   5  |             |   6  |   7  |   8  |   9  |   0  | Del  |
+|------+------+------+------+------+------|             |------+------+------+------+------+------|
+| 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
+```
+,-----------------------------------------.             ,-----------------------------------------.
+|      |      |      |      |      |      |             |      |      |      |      |      | Bksp |
+|------+------+------+------+------+------|             |------+------+------+------+------+------|
+|   `  |   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_5rows/keymaps/via/config.h b/keyboards/helix/rev3_5rows/keymaps/via/config.h
new file mode 100644
index 0000000000..ba446182d2
--- /dev/null
+++ b/keyboards/helix/rev3_5rows/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_5rows/keymaps/via/keymap.c b/keyboards/helix/rev3_5rows/keymaps/via/keymap.c
new file mode 100644
index 0000000000..903e2637de
--- /dev/null
+++ b/keyboards/helix/rev3_5rows/keymaps/via/keymap.c
@@ -0,0 +1,190 @@
+/* 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
+   * ,-----------------------------------------.             ,-----------------------------------------.
+   * |   `  |   1  |   2  |   3  |   4  |   5  |             |   6  |   7  |   8  |   9  |   0  | Del  |
+   * |------+------+------+------+------+------|             |------+------+------+------+------+------|
+   * | 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_GRV,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,                      KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_DEL, \
+      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_LBRC, KC_RBRC, 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_LPRN, KC_RPRN, KC_F12,  _______, _______, KC_HOME, KC_END,  _______, \
+      _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, KC_MNXT, KC_VOLD, KC_VOLU, KC_MPLY \
+      ),
+
+  /* Raise
+   * ,-----------------------------------------.             ,-----------------------------------------.
+   * |      |      |      |      |      |      |             |      |      |      |      |      | Bksp |
+   * |------+------+------+------+------+------|             |------+------+------+------+------+------|
+   * |   `  |   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_BSPC, \
+      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_5rows/keymaps/via/readme.md b/keyboards/helix/rev3_5rows/keymaps/via/readme.md
new file mode 100644
index 0000000000..d3ea17f1b3
--- /dev/null
+++ b/keyboards/helix/rev3_5rows/keymaps/via/readme.md
@@ -0,0 +1,81 @@
+# The default VIA keymap for Helix rev3 5rows
+
+### Qwerty Layer (Base)
+```
+,-----------------------------------------.             ,-----------------------------------------.
+|   `  |   1  |   2  |   3  |   4  |   5  |             |   6  |   7  |   8  |   9  |   0  | Del  |
+|------+------+------+------+------+------|             |------+------+------+------+------+------|
+| 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
+```
+,-----------------------------------------.             ,-----------------------------------------.
+|      |      |      |      |      |      |             |      |      |      |      |      | Bksp |
+|------+------+------+------+------+------|             |------+------+------+------+------+------|
+|   `  |   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_5rows/keymaps/via/rules.mk b/keyboards/helix/rev3_5rows/keymaps/via/rules.mk
new file mode 100644
index 0000000000..1e5b99807c
--- /dev/null
+++ b/keyboards/helix/rev3_5rows/keymaps/via/rules.mk
@@ -0,0 +1 @@
+VIA_ENABLE = yes
diff --git a/keyboards/helix/rev3_5rows/oled_display.c b/keyboards/helix/rev3_5rows/oled_display.c
new file mode 100644
index 0000000000..ffe8b594b3
--- /dev/null
+++ b/keyboards/helix/rev3_5rows/oled_display.c
@@ -0,0 +1,123 @@
+/* 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/>.
+ */
+
+ /*
+   How to Customize
+
+   $ make helix/rev3_5rows:YOUR_KEYMAP:clean
+   $ cp keyboards/helix/rev3_5rows/oled_display.c keyboards/helix/rev3_5rows/keymaps/YOUR_KEYMAP
+
+   $ edit keyboards/helix/rev3_5rows/keymaps/YOUR_KEYMAP/oled_display.c
+   $ make helix/rev3_5rows:YOUR_KEYMAP
+   $ make helix/rev3_5rows:YOUR_KEYMAP:flash
+ */
+
+#include QMK_KEYBOARD_H
+
+// Defines names for use in layer keycodes and the keymap
+enum layer_names {
+  _QWERTY = 0,
+  _LOWER,
+  _RAISE,
+  _ADJUST
+};
+
+#ifdef OLED_DRIVER_ENABLE
+
+void render_status(void) {
+
+  // Render to mode icon
+  static const char os_logo[][2][3] PROGMEM  ={{{0x95,0x96,0},{0xb5,0xb6,0}},{{0x97,0x98,0},{0xb7,0xb8,0}}};
+  if (is_mac_mode()) {
+    oled_write_P(os_logo[0][0], false);
+    oled_write_P(PSTR("\n"), false);
+    oled_write_P(os_logo[0][1], false);
+  }else{
+    oled_write_P(os_logo[1][0], false);
+    oled_write_P(PSTR("\n"), false);
+    oled_write_P(os_logo[1][1], false);
+  }
+
+  oled_write_P(PSTR(" "), false);
+
+  // Host Keyboard Layer Status
+  oled_write_P(PSTR("Layer: "), false);
+
+  switch (get_highest_layer(layer_state)) {
+      case _QWERTY:
+          oled_write_P(PSTR("Default\n"), false);
+          break;
+      case _RAISE:
+          oled_write_P(PSTR("Raise\n"), false);
+          break;
+      case _LOWER:
+          oled_write_P(PSTR("Lower\n"), false);
+          break;
+      case _ADJUST:
+          oled_write_P(PSTR("Adjust\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);
+  }
+
+  oled_write_P(PSTR("\n"), 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("CAP ") : PSTR("    "), false);
+  oled_write_P(led_state.scroll_lock ? PSTR("SCR ") : PSTR("    "), false);
+}
+
+
+static void render_logo(void) {
+    static const char PROGMEM qmk_logo[] = {
+        0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F, 0x90, 0x91, 0x92, 0x93, 0x94,
+        0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8, 0xA9, 0xAA, 0xAB, 0xAC, 0xAD, 0xAE, 0xAF, 0xB0, 0xB1, 0xB2, 0xB3, 0xB4,
+        0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF, 0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0x00
+    };
+
+    oled_write_P(qmk_logo, false);
+}
+
+static void render_rgbled_status(bool full) {
+#ifdef RGBLIGHT_ENABLE
+  char buf[30];
+  if (RGBLIGHT_MODES > 1 && rgblight_is_enabled()) {
+      if (full) {
+          snprintf(buf, sizeof(buf), " LED %2d: %d,%d,%d ",
+                   rgblight_get_mode(),
+                   rgblight_get_hue()/RGBLIGHT_HUE_STEP,
+                   rgblight_get_sat()/RGBLIGHT_SAT_STEP,
+                   rgblight_get_val()/RGBLIGHT_VAL_STEP);
+      } else {
+          snprintf(buf, sizeof(buf), "[%2d] ", rgblight_get_mode());
+      }
+      oled_write(buf, false);
+  }
+#endif
+}
+
+void oled_task_user(void) {
+  if(is_keyboard_master()){
+    render_status();
+  }else{
+    render_logo();
+    render_rgbled_status(true);
+  }
+}
+#endif
diff --git a/keyboards/helix/rev3_5rows/readme.md b/keyboards/helix/rev3_5rows/readme.md
new file mode 100644
index 0000000000..ff7e2cd59a
--- /dev/null
+++ b/keyboards/helix/rev3_5rows/readme.md
@@ -0,0 +1,13 @@
+# Helix rev3 5rows
+
+A compact split ortholinear keyboard.
+
+* Keyboard Maintainer: [yushakobo](https://github.com/yushakobo)
+* Hardware Supported: Helix rev3 PCBs, Pro Micro
+* Hardware Availability: (Under preparation)
+
+Make example for this keyboard (after setting up your build environment):
+
+    make helix/rev3_5rows: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/helix/rev3_5rows/rev3_5rows.c b/keyboards/helix/rev3_5rows/rev3_5rows.c
new file mode 100644
index 0000000000..cf183366d6
--- /dev/null
+++ b/keyboards/helix/rev3_5rows/rev3_5rows.c
@@ -0,0 +1,48 @@
+/* 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 "helix.h"
+
+bool is_mac_mode(void) {
+    return keymap_config.swap_lalt_lgui == false;
+}
+
+void set_mac_mode(bool macmode) {
+    if (macmode) {
+        /* The result is the same as pressing the AG_NORM(=MAGIC_UNSWAP_ALT_GUI) key. */
+        /* https://github.com/qmk/qmk_firmware/blob/fb4a6ad30ea7a648acd59793ed4a30c3a8d8dc32/quantum/process_keycode/process_magic.c#L123-L124 */
+        keymap_config.swap_lalt_lgui = keymap_config.swap_ralt_rgui = false;
+    } else {
+        /* The result is the same as pressing the AG_SWAP(=MAGIC_SWAP_ALT_GUI) key. */
+        /* https://github.com/qmk/qmk_firmware/blob/fb4a6ad30ea7a648acd59793ed4a30c3a8d8dc32/quantum/process_keycode/process_magic.c#L80-L81 */
+        keymap_config.swap_lalt_lgui = keymap_config.swap_ralt_rgui = true;
+    }
+}
+
+void dip_switch_update_kb(uint8_t index, bool active) {
+    switch (index) {
+    case 0:
+        if(active) { // Left no.1  Helix rev3 common
+            set_mac_mode(false);
+        } else {
+            set_mac_mode(true);
+        }
+        break;
+    default: // Left no.2 or Right no.1 or Right no.2 for user/keymap
+        dip_switch_update_user(index, active);
+        break;
+    }
+}
diff --git a/keyboards/helix/rev3_5rows/rev3_5rows.h b/keyboards/helix/rev3_5rows/rev3_5rows.h
new file mode 100644
index 0000000000..1e3121d713
--- /dev/null
+++ b/keyboards/helix/rev3_5rows/rev3_5rows.h
@@ -0,0 +1,50 @@
+/* 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
+
+#include "quantum.h"
+
+bool is_mac_mode(void);
+void set_mac_mode(bool macmode);
+
+/* 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,           R00, R01, R02, R03, R04, R05, \
+  L10, L11, L12, L13, L14, L15,           R10, R11, R12, R13, R14, R15, \
+  L20, L21, L22, L23, L24, L25,           R20, R21, R22, R23, R24, R25, \
+  L30, L31, L32, L33, L34, L35, L36, R36, R30, R31, R32, R33, R34, R35, \
+  L40, L41, L42, L43, L44, L45, L46, R46, R40, R41, R42, R43, R44, R45  \
+  ) \
+  { \
+    { L00, L01, L02, L03, L04, L05, KC_NO }, \
+    { L10, L11, L12, L13, L14, L15, KC_NO }, \
+    { L20, L21, L22, L23, L24, L25, KC_NO }, \
+    { L30, L31, L32, L33, L34, L35, L36 }, \
+    { L40, L41, L42, L43, L44, L45, L46 }, \
+    { R05, R04, R03, R02, R01, R00, KC_NO }, \
+    { R15, R14, R13, R12, R11, R10, KC_NO }, \
+    { R25, R24, R23, R22, R21, R20, KC_NO }, \
+    { R35, R34, R33, R32, R31, R30, R36 }, \
+    { R45, R44, R43, R42, R41, R40, R46 } \
+ }
diff --git a/keyboards/helix/rev3_5rows/rules.mk b/keyboards/helix/rev3_5rows/rules.mk
new file mode 100644
index 0000000000..7168f174fe
--- /dev/null
+++ b/keyboards/helix/rev3_5rows/rules.mk
@@ -0,0 +1,10 @@
+EXTRAKEY_ENABLE = yes    # Audio control and System control
+RGBLIGHT_ENABLE = yes   # Enable keyboard RGB underglow
+SPLIT_KEYBOARD = yes
+#RGB_MATRIX_ENABLE = WS2812
+OLED_DRIVER_ENABLE = yes
+ENCODER_ENABLE = yes
+DIP_SWITCH_ENABLE = yes
+LTO_ENABLE = yes
+
+SRC += oled_display.c