[Keyboard] Add Frooastboard Walnut (69% Keyboard) (#16743)

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

12 files changed, 637 insertions, 0 deletions

diff --git a/keyboards/frooastboard/walnut/config.h b/keyboards/frooastboard/walnut/config.h
new file mode 100644
index 0000000000..081a084d16
--- /dev/null
+++ b/keyboards/frooastboard/walnut/config.h
@@ -0,0 +1,55 @@
+// Copyright 2022 Simon Benezan (@Frooastside)
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#define BOOTMAGIC_LITE_ROW 0
+#define BOOTMAGIC_LITE_COLUMN 0
+
+#define ISSI_TIMEOUT 100
+#define ISSI_PERSISTENCE 0
+#define ISSI_PWM_FREQUENCY 0b010
+#define ISSI_SWPULLUP PUR_0R
+#define ISSI_CSPULLUP PUR_0R
+#define DRIVER_COUNT 1
+#define DRIVER_LED_TOTAL 48
+#define DRIVER_ADDR_1 0b1010000
+
+#define RGB_MATRIX_MAXIMUM_BRIGHTNESS 191
+
+#define RGB_DISABLE_WHEN_USB_SUSPENDED
+
+#define ENABLE_RGB_MATRIX_GRADIENT_UP_DOWN
+#define ENABLE_RGB_MATRIX_GRADIENT_LEFT_RIGHT
+#define ENABLE_RGB_MATRIX_BREATHING
+#define ENABLE_RGB_MATRIX_BAND_SAT
+#define ENABLE_RGB_MATRIX_BAND_VAL
+#define ENABLE_RGB_MATRIX_BAND_PINWHEEL_SAT
+#define ENABLE_RGB_MATRIX_BAND_PINWHEEL_VAL
+#define ENABLE_RGB_MATRIX_BAND_SPIRAL_SAT
+#define ENABLE_RGB_MATRIX_BAND_SPIRAL_VAL
+#define ENABLE_RGB_MATRIX_CYCLE_ALL
+#define ENABLE_RGB_MATRIX_CYCLE_LEFT_RIGHT
+#define ENABLE_RGB_MATRIX_CYCLE_UP_DOWN
+#define ENABLE_RGB_MATRIX_RAINBOW_MOVING_CHEVRON
+#define ENABLE_RGB_MATRIX_CYCLE_OUT_IN
+#define ENABLE_RGB_MATRIX_CYCLE_OUT_IN_DUAL
+#define ENABLE_RGB_MATRIX_CYCLE_PINWHEEL
+#define ENABLE_RGB_MATRIX_CYCLE_SPIRAL
+#define ENABLE_RGB_MATRIX_DUAL_BEACON
+#define ENABLE_RGB_MATRIX_RAINBOW_BEACON
+#define ENABLE_RGB_MATRIX_RAINBOW_PINWHEELS
+#define ENABLE_RGB_MATRIX_RAINDROPS
+#define ENABLE_RGB_MATRIX_JELLYBEAN_RAINDROPS
+#define ENABLE_RGB_MATRIX_HUE_BREATHING
+#define ENABLE_RGB_MATRIX_HUE_PENDULUM
+#define ENABLE_RGB_MATRIX_HUE_WAVE
+#define ENABLE_RGB_MATRIX_PIXEL_RAIN
+#define ENABLE_RGB_MATRIX_PIXEL_FLOW
+
+#define RGB_MATRIX_LED_FLUSH_LIMIT 16
+#define RGB_MATRIX_STARTUP_HUE 0
+#define RGB_MATRIX_STARTUP_SAT 255
+#define RGB_MATRIX_STARTUP_SPD 191
+#define RGB_MATRIX_STARTUP_VAL RGB_MATRIX_MAXIMUM_BRIGHTNESS
+#define RGB_MATRIX_STARTUP_MODE RGB_MATRIX_RAINBOW_MOVING_CHEVRON
diff --git a/keyboards/frooastboard/walnut/info.json b/keyboards/frooastboard/walnut/info.json
new file mode 100644
index 0000000000..7a8276f3ff
--- /dev/null
+++ b/keyboards/frooastboard/walnut/info.json
@@ -0,0 +1,259 @@
+{
+    "keyboard_name": "Frooastboard Walnut",
+    "manufacturer": "Frooastside",
+    "url": "https://github.com/qmk/qmk_firmware/tree/master/keyboards/frooastboard/walnut",
+    "maintainer": "Frooastside",
+    "debounce": 5,
+    "diode_direction": "COL2ROW",
+    "processor": "atmega32u4",
+    "bootloader": "atmel-dfu",
+    "features": {
+        "bootmagic": true,
+        "command": false,
+        "console": false,
+        "extrakey": false,
+        "mousekey": false,
+        "nkro": true
+    },
+    "build": {
+        "lto": true
+    },
+    "matrix_pins": {
+        "cols": ["B0", "B1", "B2", "B3", "B5", "B6", "C6", "C7"],
+        "rows": ["B4", "D7", "D6", "D4", "D5", "D3", "D2", "F1", "F0"]
+    },
+    "usb": {
+        "vid": "0x4642",
+        "pid": "0x776E",
+        "device_version": "1.0.0"
+    },
+    "layouts": {
+        "LAYOUT_ansi": {
+            "layout": [
+                { "matrix": [0, 0], "x": 0, "y": 0 },
+                { "matrix": [0, 1], "x": 1, "y": 0 },
+                { "matrix": [0, 2], "x": 2, "y": 0 },
+                { "matrix": [0, 3], "x": 3, "y": 0 },
+                { "matrix": [0, 4], "x": 4, "y": 0 },
+                { "matrix": [0, 5], "x": 5, "y": 0 },
+                { "matrix": [0, 6], "x": 6, "y": 0 },
+                { "matrix": [0, 7], "x": 7, "y": 0 },
+                { "matrix": [1, 0], "x": 8, "y": 0 },
+                { "matrix": [1, 1], "x": 9, "y": 0 },
+                { "matrix": [1, 2], "x": 10, "y": 0 },
+                { "matrix": [1, 3], "x": 11, "y": 0 },
+                { "matrix": [1, 4], "x": 12, "y": 0 },
+                { "matrix": [1, 5], "x": 13, "y": 0, "w": 2 },
+                { "matrix": [5, 5], "x": 15.5, "y": 0 },
+                { "matrix": [5, 6], "x": 16.5, "y": 0 },
+                { "matrix": [5, 7], "x": 17.5, "y": 0 },
+                { "matrix": [2, 0], "x": 0, "y": 1, "w": 1.5 },
+                { "matrix": [2, 1], "x": 1.5, "y": 1 },
+                { "matrix": [2, 2], "x": 2.5, "y": 1 },
+                { "matrix": [2, 3], "x": 3.5, "y": 1 },
+                { "matrix": [2, 4], "x": 4.5, "y": 1 },
+                { "matrix": [2, 5], "x": 5.5, "y": 1 },
+                { "matrix": [2, 6], "x": 6.5, "y": 1 },
+                { "matrix": [2, 7], "x": 7.5, "y": 1 },
+                { "matrix": [3, 0], "x": 8.5, "y": 1 },
+                { "matrix": [3, 1], "x": 9.5, "y": 1 },
+                { "matrix": [3, 2], "x": 10.5, "y": 1 },
+                { "matrix": [3, 3], "x": 11.5, "y": 1 },
+                { "matrix": [3, 4], "x": 12.5, "y": 1 },
+                { "matrix": [5, 4], "x": 13.5, "y": 1, "w": 1.5 },
+                { "matrix": [7, 5], "x": 15.5, "y": 1 },
+                { "matrix": [7, 6], "x": 16.5, "y": 1 },
+                { "matrix": [7, 7], "x": 17.5, "y": 1 },
+                { "matrix": [4, 0], "x": 0, "y": 2, "w": 1.75 },
+                { "matrix": [4, 1], "x": 1.75, "y": 2 },
+                { "matrix": [4, 2], "x": 2.75, "y": 2 },
+                { "matrix": [4, 3], "x": 3.75, "y": 2 },
+                { "matrix": [4, 4], "x": 4.75, "y": 2 },
+                { "matrix": [4, 5], "x": 5.75, "y": 2 },
+                { "matrix": [4, 6], "x": 6.75, "y": 2 },
+                { "matrix": [4, 7], "x": 7.75, "y": 2 },
+                { "matrix": [5, 0], "x": 8.75, "y": 2 },
+                { "matrix": [5, 1], "x": 9.75, "y": 2 },
+                { "matrix": [5, 2], "x": 10.75, "y": 2 },
+                { "matrix": [5, 3], "x": 11.75, "y": 2 },
+                { "matrix": [3, 5], "x": 12.75, "y": 2, "w": 2.25 },
+                { "matrix": [6, 0], "x": 0, "y": 3, "w": 2.25 },
+                { "matrix": [6, 2], "x": 2.25, "y": 3 },
+                { "matrix": [6, 3], "x": 3.25, "y": 3 },
+                { "matrix": [6, 4], "x": 4.25, "y": 3 },
+                { "matrix": [6, 5], "x": 5.25, "y": 3 },
+                { "matrix": [6, 6], "x": 6.25, "y": 3 },
+                { "matrix": [6, 7], "x": 7.25, "y": 3 },
+                { "matrix": [7, 0], "x": 8.25, "y": 3 },
+                { "matrix": [7, 1], "x": 9.25, "y": 3 },
+                { "matrix": [7, 2], "x": 10.25, "y": 3 },
+                { "matrix": [7, 3], "x": 11.25, "y": 3 },
+                { "matrix": [7, 4], "x": 12.25, "y": 3, "w": 2.75 },
+                { "matrix": [3, 6], "x": 16.5, "y": 3 },
+                { "matrix": [8, 0], "x": 0, "y": 4, "w": 1.25 },
+                { "matrix": [8, 1], "x": 1.25, "y": 4, "w": 1.25 },
+                { "matrix": [8, 2], "x": 2.5, "y": 4, "w": 1.25 },
+                { "matrix": [8, 3], "x": 3.75, "y": 4, "w": 6.25 },
+                { "matrix": [8, 4], "x": 10, "y": 4, "w": 1.25 },
+                { "matrix": [8, 5], "x": 11.25, "y": 4, "w": 1.25 },
+                { "matrix": [8, 6], "x": 12.5, "y": 4, "w": 1.25 },
+                { "matrix": [8, 7], "x": 13.75, "y": 4, "w": 1.25 },
+                { "matrix": [1, 6], "x": 15.5, "y": 4 },
+                { "matrix": [3, 7], "x": 16.5, "y": 4 },
+                { "matrix": [1, 7], "x": 17.5, "y": 4 }
+            ]
+        },
+        "LAYOUT_iso": {
+            "layout": [
+                { "matrix": [0, 0], "x": 0, "y": 0 },
+                { "matrix": [0, 1], "x": 1, "y": 0 },
+                { "matrix": [0, 2], "x": 2, "y": 0 },
+                { "matrix": [0, 3], "x": 3, "y": 0 },
+                { "matrix": [0, 4], "x": 4, "y": 0 },
+                { "matrix": [0, 5], "x": 5, "y": 0 },
+                { "matrix": [0, 6], "x": 6, "y": 0 },
+                { "matrix": [0, 7], "x": 7, "y": 0 },
+                { "matrix": [1, 0], "x": 8, "y": 0 },
+                { "matrix": [1, 1], "x": 9, "y": 0 },
+                { "matrix": [1, 2], "x": 10, "y": 0 },
+                { "matrix": [1, 3], "x": 11, "y": 0 },
+                { "matrix": [1, 4], "x": 12, "y": 0 },
+                { "matrix": [1, 5], "x": 13, "y": 0, "w": 2 },
+                { "matrix": [5, 5], "x": 15.5, "y": 0 },
+                { "matrix": [5, 6], "x": 16.5, "y": 0 },
+                { "matrix": [5, 7], "x": 17.5, "y": 0 },
+                { "matrix": [2, 0], "x": 0, "y": 1, "w": 1.5 },
+                { "matrix": [2, 1], "x": 1.5, "y": 1 },
+                { "matrix": [2, 2], "x": 2.5, "y": 1 },
+                { "matrix": [2, 3], "x": 3.5, "y": 1 },
+                { "matrix": [2, 4], "x": 4.5, "y": 1 },
+                { "matrix": [2, 5], "x": 5.5, "y": 1 },
+                { "matrix": [2, 6], "x": 6.5, "y": 1 },
+                { "matrix": [2, 7], "x": 7.5, "y": 1 },
+                { "matrix": [3, 0], "x": 8.5, "y": 1 },
+                { "matrix": [3, 1], "x": 9.5, "y": 1 },
+                { "matrix": [3, 2], "x": 10.5, "y": 1 },
+                { "matrix": [3, 3], "x": 11.5, "y": 1 },
+                { "matrix": [3, 4], "x": 12.5, "y": 1 },
+                { "matrix": [3, 5], "x": 13.75, "y": 1, "w": 1.25, "h": 2 },
+                { "matrix": [7, 5], "x": 15.5, "y": 1 },
+                { "matrix": [7, 6], "x": 16.5, "y": 1 },
+                { "matrix": [7, 7], "x": 17.5, "y": 1 },
+                { "matrix": [4, 0], "x": 0, "y": 2, "w": 1.75 },
+                { "matrix": [4, 1], "x": 1.75, "y": 2 },
+                { "matrix": [4, 2], "x": 2.75, "y": 2 },
+                { "matrix": [4, 3], "x": 3.75, "y": 2 },
+                { "matrix": [4, 4], "x": 4.75, "y": 2 },
+                { "matrix": [4, 5], "x": 5.75, "y": 2 },
+                { "matrix": [4, 6], "x": 6.75, "y": 2 },
+                { "matrix": [4, 7], "x": 7.75, "y": 2 },
+                { "matrix": [5, 0], "x": 8.75, "y": 2 },
+                { "matrix": [5, 1], "x": 9.75, "y": 2 },
+                { "matrix": [5, 2], "x": 10.75, "y": 2 },
+                { "matrix": [5, 3], "x": 11.75, "y": 2 },
+                { "matrix": [5, 4], "x": 12.75, "y": 2 },
+                { "matrix": [6, 0], "x": 0, "y": 3, "w": 1.25 },
+                { "matrix": [6, 1], "x": 1.25, "y": 3 },
+                { "matrix": [6, 2], "x": 2.25, "y": 3 },
+                { "matrix": [6, 3], "x": 3.25, "y": 3 },
+                { "matrix": [6, 4], "x": 4.25, "y": 3 },
+                { "matrix": [6, 5], "x": 5.25, "y": 3 },
+                { "matrix": [6, 6], "x": 6.25, "y": 3 },
+                { "matrix": [6, 7], "x": 7.25, "y": 3 },
+                { "matrix": [7, 0], "x": 8.25, "y": 3 },
+                { "matrix": [7, 1], "x": 9.25, "y": 3 },
+                { "matrix": [7, 2], "x": 10.25, "y": 3 },
+                { "matrix": [7, 3], "x": 11.25, "y": 3 },
+                { "matrix": [7, 4], "x": 12.25, "y": 3, "w": 2.75 },
+                { "matrix": [3, 6], "x": 16.5, "y": 3 },
+                { "matrix": [8, 0], "x": 0, "y": 4, "w": 1.25 },
+                { "matrix": [8, 1], "x": 1.25, "y": 4, "w": 1.25 },
+                { "matrix": [8, 2], "x": 2.5, "y": 4, "w": 1.25 },
+                { "matrix": [8, 3], "x": 3.75, "y": 4, "w": 6.25 },
+                { "matrix": [8, 4], "x": 10, "y": 4, "w": 1.25 },
+                { "matrix": [8, 5], "x": 11.25, "y": 4, "w": 1.25 },
+                { "matrix": [8, 6], "x": 12.5, "y": 4, "w": 1.25 },
+                { "matrix": [8, 7], "x": 13.75, "y": 4, "w": 1.25 },
+                { "matrix": [1, 6], "x": 15.5, "y": 4 },
+                { "matrix": [3, 7], "x": 16.5, "y": 4 },
+                { "matrix": [1, 7], "x": 17.5, "y": 4 }
+            ]
+        },
+        "LAYOUT_all": {
+            "layout": [
+                { "matrix": [0, 0], "x": 0, "y": 0 },
+                { "matrix": [0, 1], "x": 1, "y": 0 },
+                { "matrix": [0, 2], "x": 2, "y": 0 },
+                { "matrix": [0, 3], "x": 3, "y": 0 },
+                { "matrix": [0, 4], "x": 4, "y": 0 },
+                { "matrix": [0, 5], "x": 5, "y": 0 },
+                { "matrix": [0, 6], "x": 6, "y": 0 },
+                { "matrix": [0, 7], "x": 7, "y": 0 },
+                { "matrix": [1, 0], "x": 8, "y": 0 },
+                { "matrix": [1, 1], "x": 9, "y": 0 },
+                { "matrix": [1, 2], "x": 10, "y": 0 },
+                { "matrix": [1, 3], "x": 11, "y": 0 },
+                { "matrix": [1, 4], "x": 12, "y": 0 },
+                { "matrix": [1, 5], "x": 13, "y": 0, "w": 2 },
+                { "matrix": [5, 5], "x": 15.5, "y": 0 },
+                { "matrix": [5, 6], "x": 16.5, "y": 0 },
+                { "matrix": [5, 7], "x": 17.5, "y": 0 },
+                { "matrix": [2, 0], "x": 0, "y": 1, "w": 1.5 },
+                { "matrix": [2, 1], "x": 1.5, "y": 1 },
+                { "matrix": [2, 2], "x": 2.5, "y": 1 },
+                { "matrix": [2, 3], "x": 3.5, "y": 1 },
+                { "matrix": [2, 4], "x": 4.5, "y": 1 },
+                { "matrix": [2, 5], "x": 5.5, "y": 1 },
+                { "matrix": [2, 6], "x": 6.5, "y": 1 },
+                { "matrix": [2, 7], "x": 7.5, "y": 1 },
+                { "matrix": [3, 0], "x": 8.5, "y": 1 },
+                { "matrix": [3, 1], "x": 9.5, "y": 1 },
+                { "matrix": [3, 2], "x": 10.5, "y": 1 },
+                { "matrix": [3, 3], "x": 11.5, "y": 1 },
+                { "matrix": [3, 4], "x": 12.5, "y": 1 },
+                { "matrix": [5, 4], "x": 13.5, "y": 1, "w": 1.5 },
+                { "matrix": [7, 5], "x": 15.5, "y": 1 },
+                { "matrix": [7, 6], "x": 16.5, "y": 1 },
+                { "matrix": [7, 7], "x": 17.5, "y": 1 },
+                { "matrix": [4, 0], "x": 0, "y": 2, "w": 1.75 },
+                { "matrix": [4, 1], "x": 1.75, "y": 2 },
+                { "matrix": [4, 2], "x": 2.75, "y": 2 },
+                { "matrix": [4, 3], "x": 3.75, "y": 2 },
+                { "matrix": [4, 4], "x": 4.75, "y": 2 },
+                { "matrix": [4, 5], "x": 5.75, "y": 2 },
+                { "matrix": [4, 6], "x": 6.75, "y": 2 },
+                { "matrix": [4, 7], "x": 7.75, "y": 2 },
+                { "matrix": [5, 0], "x": 8.75, "y": 2 },
+                { "matrix": [5, 1], "x": 9.75, "y": 2 },
+                { "matrix": [5, 2], "x": 10.75, "y": 2 },
+                { "matrix": [5, 3], "x": 11.75, "y": 2 },
+                { "matrix": [3, 5], "x": 12.75, "y": 2, "w": 2.25 },
+                { "matrix": [6, 0], "x": 0, "y": 3, "w": 1.25 },
+                { "matrix": [6, 1], "x": 1.25, "y": 3 },
+                { "matrix": [6, 2], "x": 2.25, "y": 3 },
+                { "matrix": [6, 3], "x": 3.25, "y": 3 },
+                { "matrix": [6, 4], "x": 4.25, "y": 3 },
+                { "matrix": [6, 5], "x": 5.25, "y": 3 },
+                { "matrix": [6, 6], "x": 6.25, "y": 3 },
+                { "matrix": [6, 7], "x": 7.25, "y": 3 },
+                { "matrix": [7, 0], "x": 8.25, "y": 3 },
+                { "matrix": [7, 1], "x": 9.25, "y": 3 },
+                { "matrix": [7, 2], "x": 10.25, "y": 3 },
+                { "matrix": [7, 3], "x": 11.25, "y": 3 },
+                { "matrix": [7, 4], "x": 12.25, "y": 3, "w": 2.75 },
+                { "matrix": [3, 6], "x": 16.5, "y": 3 },
+                { "matrix": [8, 0], "x": 0, "y": 4, "w": 1.25 },
+                { "matrix": [8, 1], "x": 1.25, "y": 4, "w": 1.25 },
+                { "matrix": [8, 2], "x": 2.5, "y": 4, "w": 1.25 },
+                { "matrix": [8, 3], "x": 3.75, "y": 4, "w": 6.25 },
+                { "matrix": [8, 4], "x": 10, "y": 4, "w": 1.25 },
+                { "matrix": [8, 5], "x": 11.25, "y": 4, "w": 1.25 },
+                { "matrix": [8, 6], "x": 12.5, "y": 4, "w": 1.25 },
+                { "matrix": [8, 7], "x": 13.75, "y": 4, "w": 1.25 },
+                { "matrix": [1, 6], "x": 15.5, "y": 4 },
+                { "matrix": [3, 7], "x": 16.5, "y": 4 },
+                { "matrix": [1, 7], "x": 17.5, "y": 4 }
+            ]
+        }
+    }
+}
diff --git a/keyboards/frooastboard/walnut/keymaps/default/keymap.c b/keyboards/frooastboard/walnut/keymaps/default/keymap.c
new file mode 100644
index 0000000000..195b3c150b
--- /dev/null
+++ b/keyboards/frooastboard/walnut/keymaps/default/keymap.c
@@ -0,0 +1,20 @@
+// Copyright 2022 Simon Benezan (@Frooastside)
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+	[0] = LAYOUT_all(
+		KC_ESC,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_MINS, KC_EQL,  KC_BSPC,          KC_INS,  KC_HOME, KC_PGUP,
+		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_RBRC, KC_BSLS,          KC_DEL,  KC_END,  KC_PGDN,
+		KC_CAPS, KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT, KC_ENT,
+		KC_LSFT, KC_NUBS, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_RSFT,                            KC_UP,
+		KC_LCTL, KC_LGUI, KC_LALT,                            KC_SPC,                    KC_RALT, MO(1),   KC_MENU, KC_RCTL,                   KC_LEFT, KC_DOWN, KC_RGHT),
+
+	[1] = LAYOUT_all(
+		KC_GRV,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  EE_CLR,           KC_PSCR, KC_SCRL, KC_PAUS,
+		KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,          RGB_SAI, RGB_HUI, RGB_SPI,
+		KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, RGB_TOG,
+		KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,                            RGB_VAI,
+		KC_TRNS, GUI_TOG, KC_TRNS,                            KC_TRNS,                   KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,                   RGB_RMOD,RGB_VAD, RGB_MOD)
+};
diff --git a/keyboards/frooastboard/walnut/keymaps/default_ansi/keymap.c b/keyboards/frooastboard/walnut/keymaps/default_ansi/keymap.c
new file mode 100644
index 0000000000..a65dfe3a6e
--- /dev/null
+++ b/keyboards/frooastboard/walnut/keymaps/default_ansi/keymap.c
@@ -0,0 +1,20 @@
+// Copyright 2022 Simon Benezan (@Frooastside)
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+	[0] = LAYOUT_ansi(
+		KC_ESC,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_MINS, KC_EQL,  KC_BSPC,          KC_INS,  KC_HOME, KC_PGUP,
+		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_RBRC, KC_BSLS,          KC_DEL,  KC_END,  KC_PGDN,
+		KC_CAPS, KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT, KC_ENT,
+		KC_LSFT,          KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_RSFT,                            KC_UP,
+		KC_LCTL, KC_LGUI, KC_LALT,                            KC_SPC,                    KC_RALT, MO(1),   KC_MENU, KC_RCTL,                   KC_LEFT, KC_DOWN, KC_RGHT),
+
+	[1] = LAYOUT_ansi(
+		KC_GRV,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  EE_CLR,           KC_PSCR, KC_SCRL, KC_PAUS,
+		KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,          RGB_SAI, RGB_HUI, RGB_SPI,
+		KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, RGB_TOG,
+		KC_TRNS,          KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,                            RGB_VAI,
+		KC_TRNS, GUI_TOG, KC_TRNS,                            KC_TRNS,                   KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,                   RGB_RMOD,RGB_VAD, RGB_MOD)
+};
diff --git a/keyboards/frooastboard/walnut/keymaps/default_iso/keymap.c b/keyboards/frooastboard/walnut/keymaps/default_iso/keymap.c
new file mode 100644
index 0000000000..8dd069ba3e
--- /dev/null
+++ b/keyboards/frooastboard/walnut/keymaps/default_iso/keymap.c
@@ -0,0 +1,20 @@
+// Copyright 2022 Simon Benezan (@Frooastside)
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+	[0] = LAYOUT_iso(
+		KC_ESC,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_MINS, KC_EQL,  KC_BSPC,          KC_INS,  KC_HOME, KC_PGUP,
+		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_RBRC, KC_ENT,           KC_DEL,  KC_END,  KC_PGDN,
+		KC_CAPS, KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT, KC_BSLS,
+		KC_LSFT, KC_NUBS, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_RSFT,                            KC_UP,
+		KC_LCTL, KC_LGUI, KC_LALT,                            KC_SPC,                    KC_RALT, MO(1),   KC_MENU, KC_RCTL,                   KC_LEFT, KC_DOWN, KC_RGHT),
+
+	[1] = LAYOUT_iso(
+		KC_GRV,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  EE_CLR,           KC_PSCR, KC_SCRL, KC_PAUS,
+		KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, RGB_TOG,          RGB_SAI, RGB_HUI, RGB_SPI,
+		KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+		KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,                            RGB_VAI,
+		KC_TRNS, GUI_TOG, KC_TRNS,                            KC_TRNS,                   KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,                   RGB_RMOD,RGB_VAD, RGB_MOD)
+};
diff --git a/keyboards/frooastboard/walnut/keymaps/via/config.h b/keyboards/frooastboard/walnut/keymaps/via/config.h
new file mode 100644
index 0000000000..0ef255fb51
--- /dev/null
+++ b/keyboards/frooastboard/walnut/keymaps/via/config.h
@@ -0,0 +1,7 @@
+// Copyright 2022 Simon Benezan (@Frooastside)
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#define VIA_CUSTOM_LIGHTING_ENABLE
+#define DYNAMIC_KEYMAP_LAYER_COUNT 2
diff --git a/keyboards/frooastboard/walnut/keymaps/via/keymap.c b/keyboards/frooastboard/walnut/keymaps/via/keymap.c
new file mode 100644
index 0000000000..84b73e2186
--- /dev/null
+++ b/keyboards/frooastboard/walnut/keymaps/via/keymap.c
@@ -0,0 +1,131 @@
+// Copyright 2022 Simon Benezan (@Frooastside)
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+	[0] = LAYOUT_all(
+		KC_ESC,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_MINS, KC_EQL,  KC_BSPC,          KC_INS,  KC_HOME, KC_PGUP,
+		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_RBRC, KC_BSLS,          KC_DEL,  KC_END,  KC_PGDN,
+		KC_CAPS, KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT, KC_ENT,
+		KC_LSFT, KC_NUBS, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_RSFT,                            KC_UP,
+		KC_LCTL, KC_LGUI, KC_LALT,                            KC_SPC,                    KC_RALT, MO(1),   KC_MENU, KC_RCTL,                   KC_LEFT, KC_DOWN, KC_RGHT),
+
+	[1] = LAYOUT_all(
+		KC_GRV,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  EE_CLR,           KC_PSCR, KC_SCRL, KC_PAUS,
+		KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,          KC_TRNS, KC_TRNS, KC_TRNS,
+		KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, RGB_TOG,
+		KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,                            RGB_VAI,
+		KC_TRNS, GUI_TOG, KC_TRNS,                            KC_TRNS,                   KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,                   RGB_RMOD,RGB_VAD, RGB_MOD)
+};
+
+#if defined(RGB_MATRIX_ENABLE) && defined(VIA_CUSTOM_LIGHTING_ENABLE)
+
+// VIA supports only 4 discrete values for effect speed; map these to some
+// useful speed values for RGB Matrix.
+enum speed_values {
+    RGBLIGHT_SPEED_0 = UINT8_MAX / 16, // not 0 to avoid really slow effects
+    RGBLIGHT_SPEED_1 = UINT8_MAX / 4,
+    RGBLIGHT_SPEED_2 = UINT8_MAX / 2,     // matches the default value
+    RGBLIGHT_SPEED_3 = UINT8_MAX / 4 * 3, // UINT8_MAX is really fast
+};
+
+static uint8_t speed_from_rgblight(uint8_t rgblight_speed) {
+    switch (rgblight_speed) {
+        case 0:
+            return RGBLIGHT_SPEED_0;
+        case 1:
+            return RGBLIGHT_SPEED_1;
+        case 2:
+        default:
+            return RGBLIGHT_SPEED_2;
+        case 3:
+            return RGBLIGHT_SPEED_3;
+    }
+}
+
+static uint8_t speed_to_rgblight(uint8_t rgb_matrix_speed) {
+    if (rgb_matrix_speed < ((RGBLIGHT_SPEED_0 + RGBLIGHT_SPEED_1) / 2)) {
+        return 0;
+    } else if (rgb_matrix_speed < ((RGBLIGHT_SPEED_1 + RGBLIGHT_SPEED_2) / 2)) {
+        return 1;
+    } else if (rgb_matrix_speed < ((RGBLIGHT_SPEED_2 + RGBLIGHT_SPEED_3) / 2)) {
+        return 2;
+    } else {
+        return 3;
+    }
+}
+
+void via_qmk_rgblight_get_value(uint8_t *data) {
+    uint8_t *value_id   = &(data[0]);
+    uint8_t *value_data = &(data[1]);
+    switch (*value_id) {
+        case id_qmk_rgblight_brightness: {
+            value_data[0] = rgb_matrix_get_val();
+            break;
+        }
+        case id_qmk_rgblight_effect: {
+            value_data[0] = rgb_matrix_is_enabled() ? rgb_matrix_get_mode() : 0;
+            break;
+        }
+        case id_qmk_rgblight_effect_speed: {
+            value_data[0] = speed_to_rgblight(rgb_matrix_get_speed());
+            break;
+        }
+        case id_qmk_rgblight_color: {
+            value_data[0] = rgb_matrix_get_hue();
+            value_data[1] = rgb_matrix_get_sat();
+            break;
+        }
+    }
+}
+
+void via_qmk_rgblight_set_value(uint8_t *data) {
+    uint8_t *value_id   = &(data[0]);
+    uint8_t *value_data = &(data[1]);
+    switch (*value_id) {
+        case id_qmk_rgblight_brightness: {
+            rgb_matrix_sethsv_noeeprom(rgblight_get_hue(), rgblight_get_sat(), value_data[0]);
+            break;
+        }
+        case id_qmk_rgblight_effect: {
+            if (value_data[0] == 0) {
+                rgb_matrix_disable_noeeprom();
+            } else {
+                rgb_matrix_enable_noeeprom();
+                rgb_matrix_mode_noeeprom(value_data[0]);
+            }
+            break;
+        }
+        case id_qmk_rgblight_effect_speed: {
+            rgb_matrix_set_speed_noeeprom(speed_from_rgblight(value_data[0]));
+            break;
+        }
+        case id_qmk_rgblight_color: {
+            rgb_matrix_sethsv_noeeprom(value_data[0], value_data[1], rgblight_get_val());
+            break;
+        }
+    }
+}
+
+void raw_hid_receive_kb(uint8_t *data, uint8_t length) {
+    uint8_t *command_id   = &(data[0]);
+    uint8_t *command_data = &(data[1]);
+    switch (*command_id) {
+        case id_lighting_set_value:
+            via_qmk_rgblight_set_value(command_data);
+            break;
+        case id_lighting_get_value:
+            via_qmk_rgblight_get_value(command_data);
+            break;
+        case id_lighting_save:
+            eeconfig_update_rgb_matrix();
+            break;
+        default:
+            // Unhandled message.
+            *command_id = id_unhandled;
+            break;
+    }
+}
+
+#endif // defined(RGB_MATRIX_ENABLE) && defined(VIA_CUSTOM_LIGHTING_ENABLE)
diff --git a/keyboards/frooastboard/walnut/keymaps/via/rules.mk b/keyboards/frooastboard/walnut/keymaps/via/rules.mk
new file mode 100644
index 0000000000..1e5b99807c
--- /dev/null
+++ b/keyboards/frooastboard/walnut/keymaps/via/rules.mk
@@ -0,0 +1 @@
+VIA_ENABLE = yes
diff --git a/keyboards/frooastboard/walnut/readme.md b/keyboards/frooastboard/walnut/readme.md
new file mode 100644
index 0000000000..c4baa40ce4
--- /dev/null
+++ b/keyboards/frooastboard/walnut/readme.md
@@ -0,0 +1,27 @@
+# Frooastboard Walnut
+
+![frooastboard/walnut](https://i.imgur.com/4erTDZqh.jpg)
+
+This is the Frooastboard Walnut keyboard. It is made of walnut wood, has 48 underglow LEDs and a solid aluminum base plate. It uses a USB Type-C connector and will likely be available for sale soon.
+
+* Keyboard Maintainer: [Frooastside](https://github.com/Frooastside)
+* Hardware Supported: Frooastboard Walnut
+* Hardware Availability: [Frooastboard Github](https://github.com/Frooastside/Frooastboard)
+
+Make example for this keyboard (after setting up your build environment):
+
+    make frooastboard/walnut:default
+
+Flashing example for this keyboard:
+
+    make frooastboard/walnut: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).
+
+## Bootloader
+
+Enter the bootloader in 3 ways:
+
+* **Bootmagic reset**: Hold down the key at (0,0) in the matrix (usually the top left key or Escape) and plug in the keyboard
+* **Physical reset button**: Briefly press the button on the back of the PCB - some may have pads you must short instead
+* **Keycode in layout**: Press the key mapped to `RESET` if it is available
diff --git a/keyboards/frooastboard/walnut/rules.mk b/keyboards/frooastboard/walnut/rules.mk
new file mode 100644
index 0000000000..d0bb93e136
--- /dev/null
+++ b/keyboards/frooastboard/walnut/rules.mk
@@ -0,0 +1,5 @@
+# Build Options
+#   change yes to no to disable
+#
+RGB_MATRIX_ENABLE = yes         # Enable keyboard RGB matrix
+RGB_MATRIX_DRIVER = IS31FL3737  # Select RGB matrix driver
diff --git a/keyboards/frooastboard/walnut/walnut.c b/keyboards/frooastboard/walnut/walnut.c
new file mode 100644
index 0000000000..0b84d3c577
--- /dev/null
+++ b/keyboards/frooastboard/walnut/walnut.c
@@ -0,0 +1,86 @@
+// Copyright 2022 Simon Benezan (@Frooastside)
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "walnut.h"
+
+#if defined(RGB_MATRIX_ENABLE)
+
+const is31_led PROGMEM g_is31_leds[DRIVER_LED_TOTAL] = {
+/* Refer to IS31 manual for these locations
+ *   driver
+ *   |  R location
+ *   |  |        G location
+ *   |  |        |        B location
+ *   |  |        |        | */
+    {0, K_1,     J_1,     L_1},
+    {0, K_2,     J_2,     L_2},
+    {0, K_3,     J_3,     L_3},
+    {0, K_4,     J_4,     L_4},
+    {0, K_5,     J_5,     L_5},
+    {0, K_6,     J_6,     L_6},
+    {0, K_7,     J_7,     L_7},
+    {0, K_8,     J_8,     L_8},
+    {0, K_9,     J_9,     L_9},
+    {0, K_10,    J_10,    L_10},
+    {0, K_11,    J_11,    L_11},
+    {0, K_12,    J_12,    L_12},
+    {0, H_1,     G_1,     I_1},
+    {0, H_2,     G_2,     I_2},
+    {0, H_3,     G_3,     I_3},
+    {0, H_4,     G_4,     I_4},
+    {0, H_5,     G_5,     I_5},
+    {0, H_6,     G_6,     I_6},
+    {0, H_7,     G_7,     I_7},
+    {0, H_8,     G_8,     I_8},
+    {0, H_9,     G_9,     I_9},
+    {0, H_10,    G_10,    I_10},
+    {0, H_11,    G_11,    I_11},
+    {0, H_12,    G_12,    I_12},
+    {0, E_1,     D_1,     F_1},
+    {0, E_2,     D_2,     F_2},
+    {0, E_3,     D_3,     F_3},
+    {0, E_4,     D_4,     F_4},
+    {0, E_5,     D_5,     F_5},
+    {0, E_6,     D_6,     F_6},
+    {0, E_7,     D_7,     F_7},
+    {0, E_8,     D_8,     F_8},
+    {0, E_9,     D_9,     F_9},
+    {0, E_10,    D_10,    F_10},
+    {0, E_11,    D_11,    F_11},
+    {0, E_12,    D_12,    F_12},
+    {0, B_1,     A_1,     C_1},
+    {0, B_2,     A_2,     C_2},
+    {0, B_3,     A_3,     C_3},
+    {0, B_4,     A_4,     C_4},
+    {0, B_5,     A_5,     C_5},
+    {0, B_6,     A_6,     C_6},
+    {0, B_7,     A_7,     C_7},
+    {0, B_8,     A_8,     C_8},
+    {0, B_9,     A_9,     C_9},
+    {0, B_10,    A_10,    C_10},
+    {0, B_11,    A_11,    C_11},
+    {0, B_12,    A_12,    C_12}
+};
+
+led_config_t g_led_config = {
+    {
+        { NO_LED,   NO_LED,   NO_LED,   NO_LED,   NO_LED,   NO_LED,   NO_LED,   NO_LED },
+        { NO_LED,   NO_LED,   NO_LED,   NO_LED,   NO_LED,   NO_LED,   NO_LED,   NO_LED },
+        { NO_LED,   NO_LED,   NO_LED,   NO_LED,   NO_LED,   NO_LED,   NO_LED,   NO_LED },
+        { NO_LED,   NO_LED,   NO_LED,   NO_LED,   NO_LED,   NO_LED,   NO_LED,   NO_LED },
+        { NO_LED,   NO_LED,   NO_LED,   NO_LED,   NO_LED,   NO_LED,   NO_LED,   NO_LED },
+        { NO_LED,   NO_LED,   NO_LED,   NO_LED,   NO_LED,   NO_LED,   NO_LED,   NO_LED },
+        { NO_LED,   NO_LED,   NO_LED,   NO_LED,   NO_LED,   NO_LED,   NO_LED,   NO_LED },
+        { NO_LED,   NO_LED,   NO_LED,   NO_LED,   NO_LED,   NO_LED,   NO_LED,   NO_LED },
+        { NO_LED,   NO_LED,   NO_LED,   NO_LED,   NO_LED,   NO_LED,   NO_LED,   NO_LED }
+    }, {
+        {0, 62},   {0, 50},   {0, 38},   {0, 26},   {0, 14},   {0, 2},
+        {0, 2},    {12, 2},   {24, 2},   {36, 2},   {48, 2},   {60, 2},   {72, 2},   {84, 2},   {96, 2},   {108, 2},  {120, 2},  {132, 2},  {144, 2},  {156, 2},  {168, 2},  {180, 2},  {192, 2},  {204, 2},
+        {204, 2},  {204, 14}, {204, 26}, {204, 38}, {204, 50}, {204, 62},
+        {204, 62}, {192, 62}, {180, 62}, {168, 62}, {156, 62}, {144, 62}, {132, 62}, {120, 62}, {108, 62}, {96, 62},  {84, 62},  {72, 62},  {60, 62},  {48, 62},  {36, 62},  {24, 62},  {12, 62},  {0, 62}
+    }, {
+        2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2
+    }
+};
+
+#endif // defined(RGB_MATRIX_ENABLE)
diff --git a/keyboards/frooastboard/walnut/walnut.h b/keyboards/frooastboard/walnut/walnut.h
new file mode 100644
index 0000000000..3ceb9bd689
--- /dev/null
+++ b/keyboards/frooastboard/walnut/walnut.h
@@ -0,0 +1,6 @@
+// Copyright 2022 Simon Benezan (@Frooastside)
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#include "quantum.h"