[Keyboard] Add avalanche (#16407)

* [Keyboard] Add avalanche

* PR feedback

* Update keyboards/avalanche/v1/config.h

* Update keyboards/avalanche/v1/v1.h

* Update keyboards/avalanche/v2/config.h

* Update keyboards/avalanche/v2/v2.h

* Update keyboards/avalanche/v3/config.h

* Update keyboards/avalanche/v3/v3.h

* Apply suggestions from code review

* Remove rules.mk comment and fix other comments.

* Shared encoder code, follow conventions in rules.mk files.

* Remove config files which do not change defaul behavior.

19 files changed, 473 insertions, 0 deletions

diff --git a/keyboards/avalanche/avalanche.c b/keyboards/avalanche/avalanche.c
new file mode 100644
index 0000000000..08d95043b2
--- /dev/null
+++ b/keyboards/avalanche/avalanche.c
@@ -0,0 +1,25 @@
+// Copyright 2022 Vitaly Volkov (@vlkv)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "avalanche.h"
+
+#ifdef ENCODER_ENABLE
+bool encoder_update_kb(uint8_t index, bool clockwise) {
+    if (!encoder_update_user(index, clockwise)) { return false; }
+    if (index == 0) {
+        if (clockwise) {
+            tap_code_delay(KC_VOLU, 10);
+        } else {
+            tap_code_delay(KC_VOLD, 10);
+        }
+    } else if (index == 1) { /* Second encoder */
+        if (clockwise) {
+            tap_code(KC_PGUP);
+        } else {
+            tap_code(KC_PGDOWN);
+        }
+    }
+    return true;
+}
+#endif
+
diff --git a/keyboards/avalanche/avalanche.h b/keyboards/avalanche/avalanche.h
new file mode 100644
index 0000000000..c3f431f315
--- /dev/null
+++ b/keyboards/avalanche/avalanche.h
@@ -0,0 +1,14 @@
+// Copyright 2022 Vitaly Volkov (@vlkv)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#ifdef KEYBOARD_avalanche_v1
+    #include "v1.h"
+#elif KEYBOARD_avalanche_v2
+    #include "v2.h"
+#elif KEYBOARD_avalanche_v3
+    #include "v3.h"
+#endif
+
+#include "quantum.h"
diff --git a/keyboards/avalanche/config.h b/keyboards/avalanche/config.h
new file mode 100644
index 0000000000..eb9c37d38a
--- /dev/null
+++ b/keyboards/avalanche/config.h
@@ -0,0 +1,6 @@
+// Copyright 2022 Vitaly Volkov (@vlkv)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include "config_common.h"
diff --git a/keyboards/avalanche/readme.md b/keyboards/avalanche/readme.md
new file mode 100644
index 0000000000..d0b07a9c40
--- /dev/null
+++ b/keyboards/avalanche/readme.md
@@ -0,0 +1,27 @@
+# Avalanche
+
+![Avalanche v3.0](https://github.com/vlkv/avalanche/blob/master/images/avalanche_v3-0.jpg)
+
+An open source ergonomic split keyboard with removable keys to support 40% and 60% configurations.
+
+* Keyboard Maintainer: [Vitaly Volkov](https://github.com/vlkv)
+* Hardware Supported: Avalanche PCB v1, v2, v3, Pro Micro 5V/16MHz and compatible.
+* Hardware Availability: [Avalanche](https://github.com/vlkv/avalanche).
+
+Make example for this keyboard (after setting up your build environment):
+
+    make avalanche/v1:default  # for v1 PCBs
+    make avalanche/v2:default  # for v2 PCBs
+    make avalanche/v3:default  # for v3 PCBs
+
+Flashing example for this keyboard:
+
+    make avalanche/v1:default:flash  # for v1 PCBs
+    make avalanche/v2:default:flash  # for v2 PCBs
+    make avalanche/v3:default:flash  # for v3 PCBs
+
+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).
+
+## Bootloader
+
+Briefly press the button along the inner edge of the PCB next to the microcontroller.
diff --git a/keyboards/avalanche/v1/config.h b/keyboards/avalanche/v1/config.h
new file mode 100644
index 0000000000..32533c5cc9
--- /dev/null
+++ b/keyboards/avalanche/v1/config.h
@@ -0,0 +1,22 @@
+// Copyright 2022 Vitaly Volkov (@vlkv)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#define VENDOR_ID       0xCEE2
+#define PRODUCT_ID      0x0001
+#define DEVICE_VER      0x0001
+#define MANUFACTURER    vitvlkv
+#define PRODUCT         Avalanche
+
+#define MATRIX_ROWS 10
+#define MATRIX_COLS 8
+
+#define MATRIX_ROW_PINS { D4, C6, D7, E6, B4 }
+#define MATRIX_COL_PINS { F4, F5, F6, F7, B1, B3, B2, B6 }
+
+#define DIODE_DIRECTION COL2ROW
+
+#define SOFT_SERIAL_PIN D2
+
+#define BACKLIGHT_PIN B0
diff --git a/keyboards/avalanche/v1/keymaps/default/keymap.c b/keyboards/avalanche/v1/keymaps/default/keymap.c
new file mode 100644
index 0000000000..31dd0e7dab
--- /dev/null
+++ b/keyboards/avalanche/v1/keymaps/default/keymap.c
@@ -0,0 +1,48 @@
+// Copyright 2022 Vitaly Volkov (@vlkv)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+/*
+qmk compile -kb avalanche/v1 -km default
+qmk flash -kb avalanche/v1 -km default
+*/
+
+#include QMK_KEYBOARD_H
+
+enum layer {
+    LAYER_0,
+    LAYER_1,
+    LAYER_2,
+};
+
+#define FN_1 MO(LAYER_1)
+#define FN_2 LT(LAYER_2, KC_SPC)
+#define LFN_3 LSFT_T(KC_EQL)
+#define RFN_3 RSFT_T(KC_MINS)
+#define KC_QTSH RSFT_T(KC_QUOT)
+#define EN_LALT LALT_T(KC_ENT)
+#define EN_RALT RALT_T(KC_ENT)
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    [LAYER_0] = LAYOUT(
+                 KC_ESC,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,                      KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_BSLS,
+                 KC_TAB,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,                      KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_LBRC,
+        KC_LGUI, KC_LSFT, KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_CAPS, KC_LSCR, KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QTSH, KC_RBRC,
+                 KC_LCTL, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_DEL,  KC_BSPC, KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_RCTL,
+                                            KC_GRV,  LFN_3,   FN_2,    EN_LALT, EN_RALT, FN_1,    RFN_3,   KC_INS
+    ),
+    [LAYER_1] = LAYOUT(
+                 _______, KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,                     KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,
+                 _______, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,                   XXXXXXX, XXXXXXX, KC_UP,   KC_PGUP, KC_PSCR, _______,
+        _______, _______, KC_APP,  XXXXXXX, KC_HOME, KC_END,  KC_DEL,  _______, _______, KC_BSPC, KC_LEFT, KC_DOWN, KC_RGHT, XXXXXXX, _______, KC_F12,
+                 _______, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, KC_PAUS, _______, _______, KC_HOME, KC_END,  XXXXXXX, KC_PGDN, XXXXXXX, _______,
+                                            _______, _______, _______, _______, _______, _______, _______, _______
+    ),
+    [LAYER_2] = LAYOUT(
+                 _______, KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,                     KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,   KC_F11,
+                 _______, KC_BSPC, KC_1,    KC_2,    KC_3,    XXXXXXX,                   XXXXXXX, XXXXXXX, KC_UP,   KC_PGUP, XXXXXXX, XXXXXXX,
+        _______, _______, KC_BSPC, KC_4,    KC_5,    KC_6,    KC_DEL,  _______, _______, KC_BSPC, KC_LEFT, KC_DOWN, KC_RGHT, XXXXXXX, _______, KC_F12,
+                 _______, KC_BSPC, KC_7,    KC_8,    KC_9,    KC_0,    _______, _______, XXXXXXX, XXXXXXX, XXXXXXX, KC_PGDN, XXXXXXX, _______,
+                                            _______, _______, _______, _______, _______, _______, _______, _______
+    ),
+};
+
diff --git a/keyboards/avalanche/v1/rules.mk b/keyboards/avalanche/v1/rules.mk
new file mode 100644
index 0000000000..9bb578594b
--- /dev/null
+++ b/keyboards/avalanche/v1/rules.mk
@@ -0,0 +1,20 @@
+# MCU name
+MCU = atmega32u4
+
+# Bootloader selection
+BOOTLOADER = caterina
+
+# Build Options
+#   change yes to no to disable
+#
+BOOTMAGIC_ENABLE = yes      # Enable Bootmagic Lite
+MOUSEKEY_ENABLE = yes       # Mouse keys
+EXTRAKEY_ENABLE = yes       # Audio control and System control
+CONSOLE_ENABLE = no         # Console for debug
+COMMAND_ENABLE = no         # Commands for debug and configuration
+NKRO_ENABLE = yes           # Enable N-Key Rollover
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
+RGBLIGHT_ENABLE = no        # Enable keyboard RGB underglow
+AUDIO_ENABLE = no           # Audio output
+
+SPLIT_KEYBOARD = yes
diff --git a/keyboards/avalanche/v1/v1.c b/keyboards/avalanche/v1/v1.c
new file mode 100644
index 0000000000..1a0cff2e51
--- /dev/null
+++ b/keyboards/avalanche/v1/v1.c
@@ -0,0 +1,4 @@
+// Copyright 2022 Vitaly Volkov (@vlkv)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "avalanche.h"
diff --git a/keyboards/avalanche/v1/v1.h b/keyboards/avalanche/v1/v1.h
new file mode 100644
index 0000000000..a8f55c7536
--- /dev/null
+++ b/keyboards/avalanche/v1/v1.h
@@ -0,0 +1,31 @@
+// Copyright 2022 Vitaly Volkov (@vlkv)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include "avalanche.h"
+
+#include "quantum.h"
+
+#define L__ KC_NO
+#define R__ KC_NO
+
+#define LAYOUT( \
+         L01, L02, L03, L04, L05, L06,           R06, R05, R04, R03, R02, R01, \
+         L11, L12, L13, L14, L15, L16,           R16, R15, R14, R13, R12, R11, \
+    L20, L21, L22, L23, L24, L25, L26, L27, R27, R26, R25, R24, R23, R22, R21, R20, \
+         L31, L32, L33, L34, L35, L36, L37, R37, R36, R35, R34, R33, R32, R31, \
+                        L44, L45, L46, L47, R47, R46, R45, R44 \
+) \
+{ \
+    { L__, L01, L02, L03, L04, L05, L06, L__}, \
+    { L__, L11, L12, L13, L14, L15, L16, L__}, \
+    { L20, L21, L22, L23, L24, L25, L26, L27}, \
+    { L__, L31, L32, L33, L34, L35, L36, L37}, \
+    { L__, L__, L__, L__, L44, L45, L46, L47}, \
+    { R__, R01, R02, R03, R04, R05, R06, R__}, \
+    { R__, R11, R12, R13, R14, R15, R16, R__}, \
+    { R20, R21, R22, R23, R24, R25, R26, R27}, \
+    { R__, R31, R32, R33, R34, R35, R36, R37}, \
+    { R__, R__, R__, R__, R44, R45, R46, R47} \
+}
diff --git a/keyboards/avalanche/v2/config.h b/keyboards/avalanche/v2/config.h
new file mode 100644
index 0000000000..55cbd30b1c
--- /dev/null
+++ b/keyboards/avalanche/v2/config.h
@@ -0,0 +1,30 @@
+// Copyright 2022 Vitaly Volkov (@vlkv)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#define VENDOR_ID       0xCEE2
+#define PRODUCT_ID      0x0002
+#define DEVICE_VER      0x0002
+#define MANUFACTURER    vitvlkv
+#define PRODUCT         Avalanche
+
+#define MATRIX_ROWS 10
+#define MATRIX_COLS 7
+
+#define MATRIX_ROW_PINS { D4, C6, D7, E6, B4 }
+#define MATRIX_COL_PINS { F5, F6, F7, B1, B3, B2, B6 }
+
+#define DIODE_DIRECTION COL2ROW
+
+#define SOFT_SERIAL_PIN D2
+
+#define RGB_DI_PIN D3
+
+#define RGBLED_NUM 12
+#define RGBLED_SPLIT { 6, 6 }
+#define RGBLIGHT_SPLIT
+
+#define ENCODERS_PAD_A { B5 }
+#define ENCODERS_PAD_B { F4 }
+#define ENCODER_RESOLUTION 2
diff --git a/keyboards/avalanche/v2/keymaps/default/keymap.c b/keyboards/avalanche/v2/keymaps/default/keymap.c
new file mode 100644
index 0000000000..fc27401c25
--- /dev/null
+++ b/keyboards/avalanche/v2/keymaps/default/keymap.c
@@ -0,0 +1,56 @@
+// Copyright 2022 Vitaly Volkov (@vlkv)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+/*
+qmk compile -kb avalanche/v2 -km default
+qmk flash -kb avalanche/v2 -km default
+*/
+
+#include QMK_KEYBOARD_H
+
+enum layer {
+    LAYER_0,
+    LAYER_1,
+    LAYER_2,
+    LAYER_3,
+};
+
+#define FN_1 MO(LAYER_1)
+#define FN_2 LT(LAYER_2, KC_SPC)
+#define FN_3 LT(LAYER_3, KC_INS)
+#define LFN_3 LSFT_T(KC_EQL)
+#define RFN_3 RSFT_T(KC_MINS)
+#define EN_LALT LALT_T(KC_ENT)
+#define EN_RALT RALT_T(KC_ENT)
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    [LAYER_0] = LAYOUT(
+                 KC_ESC,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,                      KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_BSLS,
+                 KC_TAB,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,                      KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_LBRC,
+        KC_LGUI, KC_LSFT, KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    XXXXXXX, XXXXXXX, KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT, KC_RBRC,
+                 KC_LCTL, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_DEL,  KC_BSPC, KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_RCTL,
+                                   KC__MUTE,KC_GRV,  LFN_3,   FN_2,    EN_LALT, EN_RALT, FN_1,    RFN_3,   FN_3,    KC_LSCR
+    ),
+    [LAYER_1] = LAYOUT(
+                 _______, KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,                     KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,
+                 _______, KC_0,    KC_1,    KC_2,    KC_3,    XXXXXXX,                   XXXXXXX, KC_HOME, KC_UP,   KC_END,  KC_PGUP, XXXXXXX,
+        _______, _______, KC_APP,  KC_4,    KC_5,    KC_6,    KC_DEL,  _______, _______, KC_BSPC, KC_LEFT, KC_DOWN, KC_RGHT, KC_PGDN, XXXXXXX, KC_F12,
+                 _______, KC_PSCR, KC_7,    KC_8,    KC_9,    KC_0,    _______, _______, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, _______,
+                                   _______, _______, _______, _______, _______, _______, _______, _______, _______, _______
+    ),
+    [LAYER_2] = LAYOUT(
+                 _______, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,                   XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
+                 _______, KC_PGUP, KC_HOME, KC_UP,   KC_END,  XXXXXXX,                   XXXXXXX, KC_EXLM, KC_AT,   KC_HASH, XXXXXXX, KC_LPRN,
+        _______, _______, KC_PGDN, KC_LEFT, KC_DOWN, KC_RGHT, KC_DEL,  _______, _______, KC_BSPC, KC_DLR,  KC_PERC, KC_CIRC, XXXXXXX, XXXXXXX, KC_RPRN,
+                 _______, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, _______, _______, XXXXXXX, KC_AMPR, KC_ASTR, XXXXXXX, XXXXXXX, _______,
+                                   _______, _______, _______, _______, _______, _______, _______, _______, _______, _______
+    ),
+    [LAYER_3] = LAYOUT(
+                 XXXXXXX, XXXXXXX,  XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,                   XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
+                 RGB_TOG, RGB_MOD,  RGB_HUI, RGB_SAI, RGB_VAI, XXXXXXX,                   XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
+        _______, _______, RGB_RMOD, RGB_HUD, RGB_SAD, RGB_VAD, XXXXXXX, _______, _______, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
+                 _______, XXXXXXX,  XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, _______, _______, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, _______,
+                                    _______, _______, _______, _______, _______, _______, _______, _______, _______, _______
+    ),
+};
+
diff --git a/keyboards/avalanche/v2/rules.mk b/keyboards/avalanche/v2/rules.mk
new file mode 100644
index 0000000000..3b645daf9b
--- /dev/null
+++ b/keyboards/avalanche/v2/rules.mk
@@ -0,0 +1,21 @@
+# MCU name
+MCU = atmega32u4
+
+# Bootloader selection
+BOOTLOADER = caterina
+
+# Build Options
+#   change yes to no to disable
+#
+BOOTMAGIC_ENABLE = yes      # Enable Bootmagic Lite
+MOUSEKEY_ENABLE = yes       # Mouse keys
+EXTRAKEY_ENABLE = yes       # Audio control and System control
+CONSOLE_ENABLE = no         # Console for debug
+COMMAND_ENABLE = no         # Commands for debug and configuration
+NKRO_ENABLE = yes           # Enable N-Key Rollover
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
+RGBLIGHT_ENABLE = yes       # Enable keyboard RGB underglow
+AUDIO_ENABLE = no           # Audio output
+ENCODER_ENABLE = yes
+
+SPLIT_KEYBOARD = yes
diff --git a/keyboards/avalanche/v2/v2.c b/keyboards/avalanche/v2/v2.c
new file mode 100644
index 0000000000..1a0cff2e51
--- /dev/null
+++ b/keyboards/avalanche/v2/v2.c
@@ -0,0 +1,4 @@
+// Copyright 2022 Vitaly Volkov (@vlkv)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "avalanche.h"
diff --git a/keyboards/avalanche/v2/v2.h b/keyboards/avalanche/v2/v2.h
new file mode 100644
index 0000000000..6832becdf7
--- /dev/null
+++ b/keyboards/avalanche/v2/v2.h
@@ -0,0 +1,31 @@
+// Copyright 2022 Vitaly Volkov (@vlkv)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include "avalanche.h"
+
+#include "quantum.h"
+
+#define L__ KC_NO
+#define R__ KC_NO
+
+#define LAYOUT( \
+         L00, L01, L02, L03, L04, L05,           R05, R04, R03, R02, R01, R00, \
+         L10, L11, L12, L13, L14, L15,           R15, R14, R13, R12, R11, R10, \
+    L40, L20, L21, L22, L23, L24, L25, L26, R26, R25, R24, R23, R22, R21, R20, R40, \
+         L30, L31, L32, L33, L34, L35, L36, R36, R35, R34, R33, R32, R31, R30, \
+                   L42, L43, L44, L45, L46, R46, R45, R44, R43, R42 \
+) \
+{ \
+    { L00, L01, L02, L03, L04, L05, L__}, \
+    { L10, L11, L12, L13, L14, L15, L__}, \
+    { L20, L21, L22, L23, L24, L25, L26}, \
+    { L30, L31, L32, L33, L34, L35, L36}, \
+    { L40, L__, L42, L43, L44, L45, L46}, \
+    { R00, R01, R02, R03, R04, R05, R__}, \
+    { R10, R11, R12, R13, R14, R15, R__}, \
+    { R20, R21, R22, R23, R24, R25, R26}, \
+    { R30, R31, R32, R33, R34, R35, R36}, \
+    { R40, R__, R42, R43, R44, R45, R46} \
+}
diff --git a/keyboards/avalanche/v3/config.h b/keyboards/avalanche/v3/config.h
new file mode 100644
index 0000000000..3dc537170d
--- /dev/null
+++ b/keyboards/avalanche/v3/config.h
@@ -0,0 +1,30 @@
+// Copyright 2022 Vitaly Volkov (@vlkv)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#define VENDOR_ID       0xCEE2
+#define PRODUCT_ID      0x0003
+#define DEVICE_VER      0x0003
+#define MANUFACTURER    vitvlkv
+#define PRODUCT         Avalanche
+
+#define MATRIX_ROWS 10
+#define MATRIX_COLS 7
+
+#define MATRIX_ROW_PINS { D4, C6, D7, E6, B4 }
+#define MATRIX_COL_PINS { F5, F6, F7, B1, B3, B2, B6 }
+
+#define DIODE_DIRECTION COL2ROW
+
+#define SOFT_SERIAL_PIN D2
+
+#define RGB_DI_PIN D3
+
+#define RGBLED_NUM 12
+#define RGBLED_SPLIT { 7, 7 }
+#define RGBLIGHT_SPLIT
+
+#define ENCODERS_PAD_A { B5 }
+#define ENCODERS_PAD_B { F4 }
+#define ENCODER_RESOLUTION 2
diff --git a/keyboards/avalanche/v3/keymaps/default/keymap.c b/keyboards/avalanche/v3/keymaps/default/keymap.c
new file mode 100644
index 0000000000..be82b74c09
--- /dev/null
+++ b/keyboards/avalanche/v3/keymaps/default/keymap.c
@@ -0,0 +1,48 @@
+// Copyright 2022 Vitaly Volkov (@vlkv)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+/*
+qmk compile -kb avalanche/v3 -km default
+qmk flash -kb avalanche/v3 -km default
+*/
+
+#include QMK_KEYBOARD_H
+
+enum layer {
+    LAYER_0,
+    LAYER_1,
+    LAYER_2,
+};
+
+#define FN_1 MO(LAYER_1)
+#define LFN_2 LT(LAYER_2, KC_GRV)
+#define RFN_2 MO(LAYER_2)
+#define LFN_3 LSFT_T(KC_EQL)
+#define RFN_3 RSFT_T(KC_MINS)
+#define EN_LALT LALT_T(KC_ENT)
+#define EN_RALT RALT_T(KC_ENT)
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    [LAYER_0] = LAYOUT(
+                 KC_ESC,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,                                       KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_BSLS,
+                 KC_TAB,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,                                        KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_LBRC,
+        KC_CAPS, KC_LSFT, KC_A,    KC_S,    KC_D,    KC_F,    KC_G,                                        KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT, KC_RBRC,
+                 KC_LCTL, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_DEL,  KC_LGUI, KC_INS,  KC_BSPC, KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_RCTL,
+                                            KC__MUTE,LFN_2,   LFN_3,   KC_SPC,  EN_LALT, EN_RALT, FN_1,    RFN_3,   RFN_2,   KC_PSCR
+    ),
+    [LAYER_1] = LAYOUT(
+                 _______, KC_F11,  KC_F12,  XXXXXXX, XXXXXXX, XXXXXXX,                                     XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, KC_F11,
+                 _______, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, KC_BSPC,                                     KC_DEL,  KC_HOME, KC_UP,   KC_END,  KC_PGUP, XXXXXXX,
+        _______, _______, KC_APP,  XXXXXXX, XXXXXXX, XXXXXXX, KC_DEL,                                      KC_BSPC, KC_LEFT, KC_DOWN, KC_RGHT, KC_PGDN, XXXXXXX, KC_F12,
+                 _______, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, _______, _______, _______, _______, XXXXXXX, KC_PGUP, KC_PGDN, XXXXXXX, XXXXXXX, _______,
+                                            _______, _______, _______, _______, _______, _______, _______, _______, _______, _______
+    ),
+    [LAYER_2] = LAYOUT(
+                 _______, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,                                     XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
+                 _______, KC_0,    KC_1,    KC_2,    KC_3,    KC_BSPC,                                     KC_DEL,  KC_EXLM, KC_AT,   KC_HASH, XXXXXXX, KC_LPRN,
+        _______, _______, KC_0,    KC_4,    KC_5,    KC_6,    KC_DEL,                                      KC_BSPC, KC_DLR,  KC_PERC, KC_CIRC, XXXXXXX, XXXXXXX, KC_RPRN,
+                 _______, KC_0,    KC_7,    KC_8,    KC_9,    KC_DOT,  _______, _______, _______, _______, XXXXXXX, KC_AMPR, KC_ASTR, XXXXXXX, XXXXXXX, _______,
+                                            _______, _______, _______, _______, _______, _______, _______, _______, _______, _______
+    ),
+};
+
diff --git a/keyboards/avalanche/v3/rules.mk b/keyboards/avalanche/v3/rules.mk
new file mode 100644
index 0000000000..fbf76c7ae5
--- /dev/null
+++ b/keyboards/avalanche/v3/rules.mk
@@ -0,0 +1,21 @@
+# MCU name
+MCU = atmega32u4
+
+# Bootloader selection
+BOOTLOADER = caterina
+
+# Build Options
+#   change yes to no to disable
+#
+BOOTMAGIC_ENABLE = yes      # Enable Bootmagic Lite
+MOUSEKEY_ENABLE = yes       # Mouse keys
+EXTRAKEY_ENABLE = yes       # Audio control and System control
+CONSOLE_ENABLE = no         # Console for debug
+COMMAND_ENABLE = no         # Commands for debug and configuration
+NKRO_ENABLE = yes           # Enable N-Key Rollover
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
+RGBLIGHT_ENABLE = no        # Enable keyboard RGB underglow
+AUDIO_ENABLE = no           # Audio output
+ENCODER_ENABLE = yes
+
+SPLIT_KEYBOARD = yes
diff --git a/keyboards/avalanche/v3/v3.c b/keyboards/avalanche/v3/v3.c
new file mode 100644
index 0000000000..1a0cff2e51
--- /dev/null
+++ b/keyboards/avalanche/v3/v3.c
@@ -0,0 +1,4 @@
+// Copyright 2022 Vitaly Volkov (@vlkv)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "avalanche.h"
diff --git a/keyboards/avalanche/v3/v3.h b/keyboards/avalanche/v3/v3.h
new file mode 100644
index 0000000000..fde80607b2
--- /dev/null
+++ b/keyboards/avalanche/v3/v3.h
@@ -0,0 +1,31 @@
+// Copyright 2022 Vitaly Volkov (@vlkv)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include "avalanche.h"
+
+#include "quantum.h"
+
+#define L__ KC_NO
+#define R__ KC_NO
+
+#define LAYOUT( \
+         L00, L01, L02, L03, L04, L05,                      R05, R04, R03, R02, R01, R00, \
+         L10, L11, L12, L13, L14, L15,                      R15, R14, R13, R12, R11, R10, \
+    L40, L20, L21, L22, L23, L24, L25,                      R25, R24, R23, R22, R21, R20, R40, \
+         L30, L31, L32, L33, L34, L35, L36, L26,  R26, R36, R35, R34, R33, R32, R31, R30, \
+                        L42, L43, L44, L45, L46,  R46, R45, R44, R43, R42 \
+) \
+{ \
+    { L00, L01, L02, L03, L04, L05, L__}, \
+    { L10, L11, L12, L13, L14, L15, L__}, \
+    { L20, L21, L22, L23, L24, L25, L26}, \
+    { L30, L31, L32, L33, L34, L35, L36}, \
+    { L40, L__, L42, L43, L44, L45, L46}, \
+    { R00, R01, R02, R03, R04, R05, R__}, \
+    { R10, R11, R12, R13, R14, R15, R__}, \
+    { R20, R21, R22, R23, R24, R25, R26}, \
+    { R30, R31, R32, R33, R34, R35, R36}, \
+    { R40, R__, R42, R43, R44, R45, R46} \
+}