[Keyboard] Add Pica40 (#19220)

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

18 files changed, 775 insertions, 0 deletions

diff --git a/keyboards/pica40/info.json b/keyboards/pica40/info.json
new file mode 100644
index 0000000000..6c9dbb76d9
--- /dev/null
+++ b/keyboards/pica40/info.json
@@ -0,0 +1,52 @@
+{
+    "keyboard_name": "pica40",
+    "manufacturer": "zzeneg",
+    "url": "https://github.com/zzeneg/pica40",
+    "maintainer": "zzeneg",
+    "layouts": {
+        "LAYOUT": {
+            "layout": [
+                { "matrix": [0, 0], "x": 1, "y": 0 },
+                { "matrix": [0, 1], "x": 2, "y": 0 },
+                { "matrix": [0, 2], "x": 3, "y": 0 },
+                { "matrix": [0, 3], "x": 4, "y": 0 },
+                { "matrix": [0, 4], "x": 5, "y": 0 },
+                { "matrix": [4, 4], "x": 6, "y": 0 },
+                { "matrix": [4, 3], "x": 7, "y": 0 },
+                { "matrix": [4, 2], "x": 8, "y": 0 },
+                { "matrix": [4, 1], "x": 9, "y": 0 },
+                { "matrix": [4, 0], "x": 10, "y": 0 },
+                { "matrix": [3, 0], "x": 0, "y": 1 },
+                { "matrix": [1, 0], "x": 1, "y": 1 },
+                { "matrix": [1, 1], "x": 2, "y": 1 },
+                { "matrix": [1, 2], "x": 3, "y": 1 },
+                { "matrix": [1, 3], "x": 4, "y": 1 },
+                { "matrix": [1, 4], "x": 5, "y": 1 },
+                { "matrix": [5, 4], "x": 6, "y": 1 },
+                { "matrix": [5, 3], "x": 7, "y": 1 },
+                { "matrix": [5, 2], "x": 8, "y": 1 },
+                { "matrix": [5, 1], "x": 9, "y": 1 },
+                { "matrix": [5, 0], "x": 10, "y": 1 },
+                { "matrix": [7, 0], "x": 11, "y": 1 },
+                { "matrix": [3, 1], "x": 0, "y": 2 },
+                { "matrix": [2, 0], "x": 1, "y": 2 },
+                { "matrix": [2, 1], "x": 2, "y": 2 },
+                { "matrix": [2, 2], "x": 3, "y": 2 },
+                { "matrix": [2, 3], "x": 4, "y": 2 },
+                { "matrix": [2, 4], "x": 5, "y": 2 },
+                { "matrix": [6, 4], "x": 6, "y": 2 },
+                { "matrix": [6, 3], "x": 7, "y": 2 },
+                { "matrix": [6, 2], "x": 8, "y": 2 },
+                { "matrix": [6, 1], "x": 9, "y": 2 },
+                { "matrix": [6, 0], "x": 10, "y": 2 },
+                { "matrix": [7, 1], "x": 11, "y": 2 },
+                { "matrix": [3, 2], "x": 3, "y": 3 },
+                { "matrix": [3, 3], "x": 4, "y": 3 },
+                { "matrix": [3, 4], "x": 5, "y": 3 },
+                { "matrix": [7, 4], "x": 6, "y": 3 },
+                { "matrix": [7, 3], "x": 7, "y": 3 },
+                { "matrix": [7, 2], "x": 8, "y": 3 }
+            ]
+        }
+    }
+}
diff --git a/keyboards/pica40/keymaps/default/keymap.c b/keyboards/pica40/keymaps/default/keymap.c
new file mode 100644
index 0000000000..010a29ccee
--- /dev/null
+++ b/keyboards/pica40/keymaps/default/keymap.c
@@ -0,0 +1,44 @@
+// Copyright 2022 zzeneg (@zzeneg)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include QMK_KEYBOARD_H
+
+enum layer_number {
+  _QWERTY,
+  _LOWER,
+  _RAISE
+};
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    /* QWERTY
+    *        .----------------------------------.                    ,----------------------------------.
+    *        |   Q  |   W  |   E  |   R  |   T  |                    |   Y  |   U  |   I  |   O  |   P  |
+    * .------+------+------+------+------+------|                    |------+------+------+------+------+------.
+    * | LCTRL|   A  |   S  |   D  |   F  |   G  |                    |   H  |   J  |   K  |   L  |   ;  | BSPC |
+    * |------+------+------+------+------+------|                    |------+------+------+------+------+------|
+    * | LSFT |   Z  |   X  |   C  |   V  |   B  |-------.    .-------|   N  |   M  |   ,  |   .  |   /  | RSFT |
+    * `-----------------------------------------/       /    \       \-----------------------------------------'
+    *                        | LALT  | LOWER|  / Space /      \ Enter \  | RAISE| RGUI |
+    *                        `-------------' '-------'         '-------' '-------------'
+    */
+    [_QWERTY] = LAYOUT(
+                  KC_Q,  KC_W,  KC_E,  KC_R,  KC_T,                KC_Y,  KC_U,  KC_I,    KC_O,    KC_P,
+        KC_LCTL,  KC_A,  KC_S,  KC_D,  KC_F,  KC_G,                KC_H,  KC_J,  KC_K,    KC_L,    KC_SCLN,  KC_BSPC,
+        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_LALT, MO(_LOWER), KC_SPC,     KC_ENT, MO(_RAISE), KC_RGUI
+    ),
+
+    [_LOWER] = LAYOUT(
+                 KC_ESC,   KC_7,   KC_8,   KC_9,   KC_0,                KC_BSLS,  KC_F7,   KC_F8,   KC_F9,  KC_F12,
+        _______, KC_EQL,   KC_4,   KC_5,   KC_6,   KC_LBRC,             KC_QUOT,  KC_F4,   KC_F5,   KC_F6,  KC_F11,  _______,
+        _______, KC_MINS,  KC_1,   KC_2,   KC_3,   KC_RBRC,             KC_GRV,   KC_F1,   KC_F2,   KC_F3,  KC_F10,  _______,
+                                    _______, _______, XXXXXXX,       KC_MPLY, _______, _______
+    ),
+
+    [_RAISE] = LAYOUT(
+                 KC_TAB,        LSFT(KC_7), LSFT(KC_8), LSFT(KC_9), LSFT(KC_0),               LSFT(KC_BSLS),  KC_DEL,  KC_PGDN, KC_PGUP, KC_INS,
+        _______, LSFT(KC_EQL),  LSFT(KC_4), LSFT(KC_5), LSFT(KC_6), LSFT(KC_LBRC),            LSFT(KC_QUOT),  KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT,  _______,
+        _______, LSFT(KC_MINS), LSFT(KC_1), LSFT(KC_2), LSFT(KC_3), LSFT(KC_RBRC),            LSFT(KC_GRV),   KC_HOME, KC_END,  XXXXXXX, XXXXXXX,  _______,
+                                                           _______, _______, KC_CAPS,      XXXXXXX, _______, _______
+    ),
+};
diff --git a/keyboards/pica40/keymaps/zzeneg/config.h b/keyboards/pica40/keymaps/zzeneg/config.h
new file mode 100644
index 0000000000..ec422c4d8e
--- /dev/null
+++ b/keyboards/pica40/keymaps/zzeneg/config.h
@@ -0,0 +1,12 @@
+// Copyright 2022 zzeneg (@zzeneg)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#define IGNORE_MOD_TAP_INTERRUPT
+#define TAPPING_FORCE_HOLD
+#define TAPPING_FORCE_HOLD_PER_KEY
+#define TAPPING_TERM 150
+#define TAPPING_TERM_PER_KEY
+
+#define BOTH_SHIFTS_TURNS_ON_CAPS_WORD
diff --git a/keyboards/pica40/keymaps/zzeneg/keymap.c b/keyboards/pica40/keymaps/zzeneg/keymap.c
new file mode 100644
index 0000000000..6cff7cfa27
--- /dev/null
+++ b/keyboards/pica40/keymaps/zzeneg/keymap.c
@@ -0,0 +1,196 @@
+// Copyright 2022 zzeneg (@zzeneg)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include QMK_KEYBOARD_H
+
+enum layer_number {
+    _QWERTY = 0,
+    _GAME,
+    _NAV,
+    _NUMBER,
+    _SYMBOL,
+    _FUNC
+};
+
+// Left-hand home row mods
+#define HOME_A LGUI_T(KC_A)
+#define HOME_S LALT_T(KC_S)
+#define HOME_D LCTL_T(KC_D)
+#define HOME_F LSFT_T(KC_F)
+
+// Right-hand home row mods
+#define HOME_J RSFT_T(KC_J)
+#define HOME_K RCTL_T(KC_K)
+#define HOME_L LALT_T(KC_L)
+#define HOME_SCLN RGUI_T(KC_SCLN)
+
+// bottom mods
+#define SYM_SPC LT(_SYMBOL, KC_SPC)
+#define NUM_TAB LT(_NUMBER, KC_TAB)
+#define FUNC_ESC LT(_FUNC, KC_ESC)
+#define FUNC_ENT LT(_FUNC, KC_ENT)
+#define NAV_BSPC LT(_NAV, KC_BSPC)
+#define RALT_DEL RALT_T(KC_DEL)
+
+// game layer mods
+#define LALT_EQL LALT_T(KC_EQL)
+#define LSFT_MINS LSFT_T(KC_MINS)
+#define LCTL_ESC LCTL_T(KC_ESC)
+#define LGUI_QUOT LGUI_T(KC_QUOT)
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    /* QWERTY
+    *        .----------------------------------.                    ,----------------------------------.
+    *        |   Q  |   W  |   E  |   R  |   T  |                    |   Y  |   U  |   I  |   O  |   P  |
+    * .------+------+------+------+------+------|                    |------+------+------+------+------+------.
+    * |  =   |   A  |   S  |   D  |   F  |   G  |                    |   H  |   J  |   K  |   L  |   ;  |  '   |
+    * |------+------+------+------+------+------|                    |------+------+------+------+------+------|
+    * |  -   |   Z  |   X  |   C  |   V  |   B  |-------.    .-------|   N  |   M  |   ,  |   .  |   /  |  `   |
+    * `-----------------------------------------/       /    \       \-----------------------------------------'
+    *                         | Esc  | Tab  |  / Space /      \ Enter \  | Bsps | Del  |
+    *                         |_FUNC | _NUM | /_SYMBOL/        \ _FUNC \ | _NAV | RAlt |
+    *                         `-------------''-------'          '-------''-------------'
+    */
+    [_QWERTY] = LAYOUT(
+                 KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,                KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,
+        KC_EQL,  HOME_A,  HOME_S,  HOME_D,  HOME_F,  KC_G,                KC_H,    HOME_J,  HOME_K,  HOME_L,  HOME_SCLN, KC_QUOT,
+        KC_MINS, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,                KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH,   KC_GRV,
+                                      FUNC_ESC, NUM_TAB, SYM_SPC,     FUNC_ENT, NAV_BSPC, RALT_DEL
+    ),
+
+    [_GAME] = LAYOUT(
+                   KC_Q,   KC_W,    KC_E,    KC_R,    KC_T,               KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,
+        LALT_EQL,  KC_A,   KC_S,    KC_D,    KC_F,    KC_G,               KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, LGUI_QUOT,
+        LSFT_MINS, KC_Z,   KC_X,    KC_C,    KC_V,    KC_B,               KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, TG(_GAME),
+                                       LCTL_ESC, NUM_TAB, SYM_SPC,    FUNC_ENT, NAV_BSPC, RALT_DEL
+    ),
+
+    [_NAV] = LAYOUT(
+                 XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,             XXXXXXX,       XXXXXXX, KC_PGDN, KC_PGUP, XXXXXXX,
+        XXXXXXX, KC_LGUI, KC_LALT, KC_LCTL, KC_LSFT, XXXXXXX,             LALT(KC_UP),   KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT, KC_INS,
+        XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,             LALT(KC_DOWN), KC_HOME, KC_END,  KC_APP,  XXXXXXX, XXXXXXX,
+                                       XXXXXXX, XXXXXXX, XXXXXXX,     XXXXXXX, _______, XXXXXXX
+    ),
+
+    [_NUMBER] = LAYOUT(
+                 KC_BSLS, KC_7,    KC_8,    KC_9,    KC_0,                XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
+        KC_LCTL, KC_COMM, KC_4,    KC_5,    KC_6,    KC_LBRC,             XXXXXXX, KC_RSFT, KC_RCTL, KC_LALT, KC_RGUI, XXXXXXX,
+        KC_ENT,  KC_DOT,  KC_1,    KC_2,    KC_3,    KC_RBRC,             XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
+                                     KC_BSPC, _______, TG(_GAME),       XXXXXXX, XXXXXXX, XXXXXXX
+    ),
+
+    [_SYMBOL] = LAYOUT(
+                 LSFT(KC_BSLS), LSFT(KC_7), LSFT(KC_8), LSFT(KC_9), LSFT(KC_0),               XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
+        KC_LCTL, LSFT(KC_COMM), LSFT(KC_4), LSFT(KC_5), LSFT(KC_6), LSFT(KC_LBRC),            XXXXXXX, KC_RSFT, KC_RCTL, KC_LALT, KC_RGUI, XXXXXXX,
+        KC_ENT,  LSFT(KC_DOT),  LSFT(KC_1), LSFT(KC_2), LSFT(KC_3), LSFT(KC_RBRC),            XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
+                                                           XXXXXXX, KC_BSPC, _______,     XXXXXXX, XXXXXXX, XXXXXXX
+    ),
+
+    [_FUNC] = LAYOUT(
+                 KC_F12, KC_F7,   KC_F8,   KC_F9,   KC_PSCR,            XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
+        KC_LCTL, KC_F11, KC_F4,   KC_F5,   KC_F6,   KC_PAUS,            XXXXXXX, KC_RSFT, KC_RCTL, KC_LALT, KC_RGUI, XXXXXXX,
+        KC_DEL,  KC_F10, KC_F1,   KC_F2,   KC_F3,   KC_CAPS,            XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
+                                     _______, KC_MNXT, KC_MPLY,     _______, XXXXXXX, XXXXXXX
+    )
+};
+
+bool get_tapping_force_hold(uint16_t keycode, keyrecord_t *record) {
+    switch (keycode) {
+        // allow multiple space, backspace, delete
+        case SYM_SPC:
+        case NAV_BSPC:
+        case RALT_DEL:
+            return false;
+        default:
+            return true;
+    }
+}
+
+uint16_t get_tapping_term(uint16_t keycode, keyrecord_t *record) {
+    // different tapping term for different fingers
+    switch (keycode) {
+        // pinkies
+        case HOME_A:
+        case HOME_SCLN:
+            return TAPPING_TERM + 70;
+        // ring
+        case HOME_S:
+        case HOME_L:
+            return TAPPING_TERM + 40;
+        // middle
+        case HOME_D:
+        case HOME_K:
+            return TAPPING_TERM + 20;
+        // index and thumb
+        default:
+            return TAPPING_TERM;
+    }
+}
+
+#ifdef ENCODER_MAP_ENABLE
+const uint16_t PROGMEM encoder_map[][NUM_ENCODERS][2] = {
+    [_QWERTY] =   { ENCODER_CCW_CW(KC_VOLD, KC_VOLU) },
+    [_GAME] =  { ENCODER_CCW_CW(KC_VOLD, KC_VOLU)  },
+    [_NAV] =  { ENCODER_CCW_CW(KC_MPRV, KC_MNXT)  },
+    [_NUMBER] =  { ENCODER_CCW_CW(KC_MPRV, KC_MNXT)  },
+    [_SYMBOL] =  { ENCODER_CCW_CW(KC_MPRV, KC_MNXT)  },
+    [_FUNC] =  { ENCODER_CCW_CW(KC_MPRV, KC_MNXT)  }
+};
+#endif // ENCODER_MAP_ENABLE
+
+#if defined(RGBLIGHT_ENABLE) && defined(RGBLIGHT_LAYERS)
+
+const rgblight_segment_t PROGMEM game_layer[] = RGBLIGHT_LAYER_SEGMENTS({0, 1, HSV_ORANGE});
+const rgblight_segment_t PROGMEM capslock_layer[] = RGBLIGHT_LAYER_SEGMENTS({0, 1, HSV_PURPLE});
+const rgblight_segment_t PROGMEM capslockword_layer[] = RGBLIGHT_LAYER_SEGMENTS({0, 1, HSV_MAGENTA});
+const rgblight_segment_t* const PROGMEM rgb_layers[] = RGBLIGHT_LAYERS_LIST(game_layer, capslock_layer, capslockword_layer);
+
+bool led_update_user(led_t led_state) {
+    rgblight_set_layer_state(1, led_state.caps_lock);
+    return true;
+}
+
+layer_state_t layer_state_set_user(layer_state_t state) {
+    rgblight_set_layer_state(0, layer_state_cmp(state, _GAME));
+    return state;
+}
+
+void caps_word_set_user(bool active) {
+    rgblight_set_layer_state(2, active);
+}
+
+void keyboard_post_init_user(void) {
+    rgblight_layers = rgb_layers;
+}
+
+#endif // defined(RGBLIGHT_ENABLE) && defined(RGBLIGHT_LAYERS)
+
+#ifdef OLED_ENABLE
+
+void render_layer(void) {
+    switch (get_highest_layer(layer_state)) {
+        case _NUMBER:
+            oled_write_ln_P(PSTR("NMBR"), false);
+            break;
+        case _SYMBOL:
+            oled_write_ln_P(PSTR("SMBL"), false);
+            break;
+        case _NAV:
+            oled_write_ln_P(PSTR("NAV"), false);
+            break;
+        case _FUNC:
+            oled_write_ln_P(PSTR("FUNC"), false);
+            break;
+        default:
+            oled_write_ln_P(PSTR(" "), false);
+            break;
+    }
+}
+
+bool oled_task_user(void) {
+    render_layer();
+    return true;
+}
+
+#endif // OLED_ENABLE
+
diff --git a/keyboards/pica40/keymaps/zzeneg/rules.mk b/keyboards/pica40/keymaps/zzeneg/rules.mk
new file mode 100644
index 0000000000..afd8d2c6bf
--- /dev/null
+++ b/keyboards/pica40/keymaps/zzeneg/rules.mk
@@ -0,0 +1,2 @@
+CAPS_WORD_ENABLE = yes
+ENCODER_MAP_ENABLE = yes
diff --git a/keyboards/pica40/readme.md b/keyboards/pica40/readme.md
new file mode 100644
index 0000000000..c9efb58d92
--- /dev/null
+++ b/keyboards/pica40/readme.md
@@ -0,0 +1,29 @@
+# pica40
+
+![pica40](https://i.imgur.com/CKImjAPh.jpg)
+
+A family of 40-key split ortholinear keyboards with rotary encoder.
+
+-   Keyboard Maintainer: [zzeneg](https://github.com/zzeneg)
+-   Hardware Supported: Pica40 PCBs, Pro Micro (rev1), XIAO RP2040/nRF52840 (rev2)
+-   Hardware Availability: [GitHub](https://github.com/zzeneg/pica40)
+
+Make example for this keyboard (after setting up your build environment):
+
+    make pica40:default
+    make pica40/rev1:default
+
+Flashing example for this keyboard:
+
+    make pica40:default:flash
+    make pica40/rev1: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/pica40/rev1/config.h b/keyboards/pica40/rev1/config.h
new file mode 100644
index 0000000000..09c481a9ff
--- /dev/null
+++ b/keyboards/pica40/rev1/config.h
@@ -0,0 +1,9 @@
+// Copyright 2022 zzeneg (@zzeneg)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#ifdef RGBLIGHT_ENABLE
+#    define RGBLIGHT_DISABLE_KEYCODES // disable keycodes for RGB Light controls, only status LED is supported
+#    define PICA40_RGBLIGHT_TIMEOUT 5 // turn RGB off after N minutes
+#endif
diff --git a/keyboards/pica40/rev1/info.json b/keyboards/pica40/rev1/info.json
new file mode 100644
index 0000000000..8e4e64618d
--- /dev/null
+++ b/keyboards/pica40/rev1/info.json
@@ -0,0 +1,39 @@
+{
+    "processor": "atmega32u4",
+    "bootloader": "caterina",
+    "diode_direction": "COL2ROW",
+    "matrix_pins": {
+        "cols": ["D2", "B5", "B4", "E6", "D7"],
+        "rows": ["B1", "B3", "B2", "B6", "F4", "F5", "F6", "F7"]
+    },
+    "features": {
+        "bootmagic": true,
+        "command": false,
+        "console": false,
+        "mousekey": true,
+        "extrakey": true,
+        "encoder": true,
+        "oled": true,
+        "rgblight": true,
+        "nkro": true
+    },
+    "rgblight": {
+        "led_count": 1,
+        "pin": "D3",
+        "layers": {
+            "enabled": true,
+            "max": 3
+        }
+    },
+    "encoder": {
+        "rotary": [{ "pin_a": "C6", "pin_b": "D4" }]
+    },
+    "usb": {
+        "device_version": "1.0.0",
+        "pid": "0x0841",
+        "vid": "0xFEED"
+    },
+    "build": {
+        "lto": true
+    }
+}
diff --git a/keyboards/pica40/rev1/rev1.c b/keyboards/pica40/rev1/rev1.c
new file mode 100644
index 0000000000..f008e4857a
--- /dev/null
+++ b/keyboards/pica40/rev1/rev1.c
@@ -0,0 +1,91 @@
+// Copyright 2022 zzeneg (@zzeneg)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "rev1.h"
+
+#ifdef PICA40_RGBLIGHT_TIMEOUT
+
+uint16_t check_rgblight_timer = 0;
+uint16_t idle_timer = 0;
+uint8_t counter = 0;
+
+void housekeeping_task_kb(void) {
+    if (timer_elapsed(check_rgblight_timer) > 1000) {
+        check_rgblight_timer = timer_read();
+
+        if (rgblight_is_enabled() && timer_elapsed(idle_timer) > 10000) {
+            idle_timer = timer_read();
+            counter++;
+        }
+
+        if (rgblight_is_enabled() && counter > PICA40_RGBLIGHT_TIMEOUT * 6) {
+            counter = 0;
+            rgblight_disable_noeeprom();
+        }
+    }
+
+    housekeeping_task_user();
+}
+
+bool process_record_kb(uint16_t keycode, keyrecord_t *record) {
+    if (record->event.pressed && timer_elapsed(idle_timer) > 1000) {
+        idle_timer = timer_read();
+        counter = 0;
+        if (!rgblight_is_enabled()) {
+            rgblight_enable_noeeprom();
+        }
+    }
+
+    return process_record_user(keycode, record);
+}
+
+void keyboard_post_init_kb(void) {
+    check_rgblight_timer = timer_read();
+    idle_timer = timer_read();
+    rgblight_enable_noeeprom();
+
+    keyboard_post_init_user();
+}
+
+
+#endif // PICA40_RGBLIGHT_TIMEOUT
+
+#ifdef OLED_ENABLE
+
+oled_rotation_t oled_init_kb(oled_rotation_t rotation) {
+    return OLED_ROTATION_270;
+}
+
+void render_mods(uint8_t modifiers) {
+    oled_write_ln_P((modifiers & MOD_MASK_CTRL) ? PSTR("Ctrl") : PSTR(" "), false);
+    oled_write_ln_P((modifiers & MOD_MASK_ALT) ? PSTR("Alt") : PSTR(" "), false);
+    oled_write_ln_P((modifiers & MOD_MASK_SHIFT) ? PSTR("Shft") : PSTR(" "), false);
+    oled_write_ln_P((modifiers & MOD_MASK_GUI) ? PSTR("GUI") : PSTR(" "), false);
+}
+
+bool oled_task_kb(void) {
+    // display's top is hidden by cover
+    oled_write_ln_P(PSTR(" "), false);
+    oled_write_ln_P(PSTR(" "), false);
+    oled_write_ln_P(PSTR(" "), false);
+
+    if (!oled_task_user()) return false;
+
+    render_mods(get_mods());
+
+    return true;
+}
+
+#endif // OLED_ENABLE
+
+#ifdef ENCODER_ENABLE
+
+bool encoder_update_kb(uint8_t index, bool clockwise) {
+    if (!encoder_update_user(index, clockwise)) return false;
+
+    tap_code(clockwise ? KC_VOLU : KC_VOLD);
+
+    return false;
+}
+
+#endif // ENCODER_ENABLE
diff --git a/keyboards/pica40/rev1/rev1.h b/keyboards/pica40/rev1/rev1.h
new file mode 100644
index 0000000000..964038eefb
--- /dev/null
+++ b/keyboards/pica40/rev1/rev1.h
@@ -0,0 +1,6 @@
+// Copyright 2022 zzeneg (@zzeneg)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include "quantum.h"
diff --git a/keyboards/pica40/rev1/rules.mk b/keyboards/pica40/rev1/rules.mk
new file mode 100644
index 0000000000..2e3ef9fb84
--- /dev/null
+++ b/keyboards/pica40/rev1/rules.mk
@@ -0,0 +1 @@
+OLED_DRIVER = SSD1306
diff --git a/keyboards/pica40/rev2/config.h b/keyboards/pica40/rev2/config.h
new file mode 100644
index 0000000000..1a59bee3dd
--- /dev/null
+++ b/keyboards/pica40/rev2/config.h
@@ -0,0 +1,19 @@
+// Copyright 2022 zzeneg (@zzeneg)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#define SERIAL_USART_TX_PIN GP0
+
+#define RP2040_BOOTLOADER_DOUBLE_TAP_RESET
+#define RP2040_BOOTLOADER_DOUBLE_TAP_RESET_LED GP17
+#define RP2040_BOOTLOADER_DOUBLE_TAP_RESET_TIMEOUT 500U
+
+#ifdef RGBLIGHT_ENABLE
+#    define RGBLIGHT_DISABLE_KEYCODES // disable keycodes for RGB Light controls, only status LED is supported
+#    define PICA40_RGBLIGHT_TIMEOUT 5 // turn RGB off after N minutes
+#endif
+
+#ifdef ENCODER_ENABLE
+#   define SPLIT_TRANSACTION_IDS_KB ENCODER_SYNC
+#endif
diff --git a/keyboards/pica40/rev2/info.json b/keyboards/pica40/rev2/info.json
new file mode 100644
index 0000000000..99540900b9
--- /dev/null
+++ b/keyboards/pica40/rev2/info.json
@@ -0,0 +1,53 @@
+{
+    "processor": "RP2040",
+    "bootloader": "rp2040",
+    "diode_direction": "COL2ROW",
+    "matrix_pins": {
+        "cols": ["GP26", "GP27", "GP28", "GP29", "GP6"],
+        "rows": ["GP3", "GP4", "GP2", "GP1"]
+    },
+    "indicators": {
+        "num_lock": "GP17",
+        "caps_lock": "GP16",
+        "scroll_lock": "GP25",
+        "on_state": 0
+    },
+    "features": {
+        "bootmagic": true,
+        "command": false,
+        "console": false,
+        "mousekey": true,
+        "extrakey": true,
+        "encoder": true,
+        "rgblight": true,
+        "nkro": true
+    },
+    "rgblight": {
+        "led_count": 1,
+        "pin": "GP12",
+        "split": true,
+        "layers": {
+            "enabled": true,
+            "max": 3
+        }
+    },
+    "split": {
+        "enabled": true,
+        "encoder": {
+            "right": {
+                "rotary": []
+            }
+        }
+    },
+    "encoder": {
+        "rotary": [{ "pin_a": "GP7", "pin_b": "GP7" }]
+    },
+    "usb": {
+        "device_version": "1.0.0",
+        "pid": "0x0842",
+        "vid": "0xFEED"
+    },
+    "build": {
+        "lto": true
+    }
+}
diff --git a/keyboards/pica40/rev2/post_rules.mk b/keyboards/pica40/rev2/post_rules.mk
new file mode 100644
index 0000000000..e4dda1925b
--- /dev/null
+++ b/keyboards/pica40/rev2/post_rules.mk
@@ -0,0 +1,8 @@
+# if ENCODER_ENABLE is set, add defines but avoid adding encoder.c as it's replaced by custom code in rev2.c
+ifeq ($(strip $(ENCODER_ENABLE)), yes)
+	ENCODER_ENABLE := no
+    OPT_DEFS += -DENCODER_ENABLE
+    ifeq ($(strip $(ENCODER_MAP_ENABLE)), yes)
+        OPT_DEFS += -DENCODER_MAP_ENABLE
+    endif
+endif
diff --git a/keyboards/pica40/rev2/rev2.c b/keyboards/pica40/rev2/rev2.c
new file mode 100644
index 0000000000..c585ec56d6
--- /dev/null
+++ b/keyboards/pica40/rev2/rev2.c
@@ -0,0 +1,189 @@
+// Copyright 2022 zzeneg (@zzeneg)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "rev2.h"
+
+#ifdef ENCODER_ENABLE // code based on encoder.c
+
+static const pin_t encoders_pad_a[] = ENCODERS_PAD_A;
+static const pin_t encoders_pad_b[] = ENCODERS_PAD_B;
+
+static int8_t  encoder_LUT[]  = {0, -1, 1, 0, 1, 0, 0, -1, -1, 0, 0, 1, 0, 1, -1, 0};
+static uint8_t encoder_state  = 3;
+static int8_t  encoder_pulses = 0;
+static uint8_t encoder_value  = 0;
+
+typedef struct encoder_sync_data {
+    int value;
+} encoder_sync_data;
+
+// custom handler that returns encoder B pin status from slave side
+void encoder_sync_slave_handler(uint8_t in_buflen, const void *in_data, uint8_t out_buflen, void *out_data) {
+    encoder_sync_data *data = (encoder_sync_data *)out_data;
+    data->value = readPin(encoders_pad_b[0]);
+}
+
+__attribute__((weak)) bool encoder_update_user(uint8_t index, bool clockwise) {
+    return true;
+}
+
+bool encoder_update_kb(uint8_t index, bool clockwise) {
+    if (!encoder_update_user(index, clockwise)) return false;
+
+    tap_code(clockwise ? KC_VOLU : KC_VOLD);
+
+    return false;
+}
+
+#ifdef ENCODER_MAP_ENABLE
+static void encoder_exec_mapping(uint8_t index, bool clockwise) {
+    action_exec(clockwise ? ENCODER_CW_EVENT(index, true) : ENCODER_CCW_EVENT(index, true));
+    wait_ms(ENCODER_MAP_KEY_DELAY);
+    action_exec(clockwise ? ENCODER_CW_EVENT(index, false) : ENCODER_CCW_EVENT(index, false));
+    wait_ms(ENCODER_MAP_KEY_DELAY);
+}
+#endif // ENCODER_MAP_ENABLE
+
+void encoder_init(void) {
+    setPinInputHigh(encoders_pad_a[0]);
+    setPinInputHigh(encoders_pad_b[0]);
+    wait_us(100);
+    transaction_register_rpc(ENCODER_SYNC, encoder_sync_slave_handler);
+}
+
+bool encoder_read(void) {
+    // ignore if running on slave side
+    if (!is_keyboard_master()) return false;
+
+    bool changed = false;
+    encoder_sync_data data = {0};
+    // request pin B status from slave side
+    if (transaction_rpc_recv(ENCODER_SYNC, sizeof(data), &data)) {
+        uint8_t new_status = (readPin(encoders_pad_a[0]) << 0) | (data.value << 1);
+        if ((encoder_state & 0x3) != new_status) {
+            encoder_state <<= 2;
+            encoder_state |= new_status;
+            encoder_pulses += encoder_LUT[encoder_state & 0xF];
+
+            if (encoder_pulses >= ENCODER_RESOLUTION) {
+                encoder_value++;
+                changed = true;
+#ifdef ENCODER_MAP_ENABLE
+                encoder_exec_mapping(0, false);
+#else  // ENCODER_MAP_ENABLE
+                encoder_update_kb(0, false);
+#endif // ENCODER_MAP_ENABLE
+            }
+
+            if (encoder_pulses <= -ENCODER_RESOLUTION) {
+                encoder_value--;
+                changed = true;
+#ifdef ENCODER_MAP_ENABLE
+                encoder_exec_mapping(0, true);
+#else  // ENCODER_MAP_ENABLE
+                encoder_update_kb(0, true);
+#endif // ENCODER_MAP_ENABLE
+            }
+
+            encoder_pulses %= ENCODER_RESOLUTION;
+        }
+    }
+    return changed;
+}
+
+// do not use standard split encoder transactions
+void encoder_state_raw(uint8_t *slave_state) {}
+void encoder_update_raw(uint8_t *slave_state) {}
+
+#endif // ENCODER_ENABLE
+
+#ifdef PICA40_RGBLIGHT_TIMEOUT
+uint16_t check_rgblight_timer = 0;
+uint16_t idle_timer = 0;
+int8_t counter = 0;
+
+bool process_record_kb(uint16_t keycode, keyrecord_t *record) {
+    if (record->event.pressed && timer_elapsed(idle_timer) > 1000) {
+        idle_timer = timer_read();
+        counter = 0;
+        if (!rgblight_is_enabled()) {
+            rgblight_enable_noeeprom();
+        }
+    }
+
+    return process_record_user(keycode, record);
+}
+
+#endif // PICA40_RGBLIGHT_TIMEOUT
+
+#if defined(RGBLIGHT_ENABLE) && defined(RGBLIGHT_LAYERS)
+uint16_t check_layer_timer = 0;
+bool is_layer_active = false;
+bool should_set_rgblight = false;
+#endif // defined(RGBLIGHT_ENABLE) && defined(RGBLIGHT_LAYERS)
+
+void keyboard_post_init_kb(void) {
+    setPinOutput(PICA40_RGB_POWER_PIN);
+
+#ifdef PICA40_RGBLIGHT_TIMEOUT
+    idle_timer = timer_read();
+    check_rgblight_timer = timer_read();
+    rgblight_enable_noeeprom();
+#endif // RGBLIGHT_ENABLE
+
+#if defined(RGBLIGHT_ENABLE) && defined(RGBLIGHT_LAYERS)
+    check_layer_timer = timer_read();
+#endif // defined(RGBLIGHT_ENABLE) && defined(RGBLIGHT_LAYERS)
+
+    keyboard_post_init_user();
+}
+
+void housekeeping_task_kb(void) {
+#ifdef PICA40_RGBLIGHT_TIMEOUT
+    if (is_keyboard_master()) {
+        if (timer_elapsed(check_rgblight_timer) > 1000) {
+            check_rgblight_timer = timer_read();
+
+            if (rgblight_is_enabled() && timer_elapsed(idle_timer) > 10000) {
+                idle_timer = timer_read();
+                counter++;
+            }
+
+            if (rgblight_is_enabled() && counter > PICA40_RGBLIGHT_TIMEOUT * 6) {
+                counter = 0;
+                rgblight_disable_noeeprom();
+            }
+        }
+    }
+#endif // PICA40_RGBLIGHT_TIMEOUT
+
+#if defined(RGBLIGHT_ENABLE) && defined(RGBLIGHT_LAYERS)
+    if (timer_elapsed(check_layer_timer) > 100) {
+        check_layer_timer = timer_read();
+
+        if (should_set_rgblight) {
+            // set in the next housekeeping cycle after setting pin to avoid issues
+            rgblight_set();
+            should_set_rgblight = false;
+        }
+
+        bool current_is_layer_active = false;
+        for (uint8_t i = 0; i < RGBLIGHT_MAX_LAYERS; i++) {
+            current_is_layer_active = current_is_layer_active || rgblight_get_layer_state(i);
+        }
+
+        if (is_layer_active != current_is_layer_active) {
+            is_layer_active = current_is_layer_active;
+            should_set_rgblight = true;
+
+            if (is_layer_active) {
+                writePinHigh(PICA40_RGB_POWER_PIN);
+            } else {
+                writePinLow(PICA40_RGB_POWER_PIN);
+            }
+        }
+    }
+#endif // defined(RGBLIGHT_ENABLE) && defined(RGBLIGHT_LAYERS)
+
+    housekeeping_task_user();
+}
diff --git a/keyboards/pica40/rev2/rev2.h b/keyboards/pica40/rev2/rev2.h
new file mode 100644
index 0000000000..473011fbb0
--- /dev/null
+++ b/keyboards/pica40/rev2/rev2.h
@@ -0,0 +1,22 @@
+// Copyright 2022 zzeneg (@zzeneg)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include "quantum.h"
+#include "gpio.h"
+
+// RGB LED support for XIAO RP2040
+#define PICA40_RGB_POWER_PIN GP11
+
+// enable custom encoder functionality for Pica40
+#ifdef ENCODER_ENABLE
+#   include "encoder.h"
+#   include "transactions.h"
+#   ifndef ENCODER_MAP_KEY_DELAY
+#       define ENCODER_MAP_KEY_DELAY 2
+#   endif
+#   ifndef ENCODER_RESOLUTION
+#       define ENCODER_RESOLUTION 4
+#   endif
+#endif
diff --git a/keyboards/pica40/rev2/rules.mk b/keyboards/pica40/rev2/rules.mk
new file mode 100644
index 0000000000..8fb51ec82d
--- /dev/null
+++ b/keyboards/pica40/rev2/rules.mk
@@ -0,0 +1,2 @@
+SERIAL_DRIVER = vendor
+WS2812_DRIVER = vendor
diff --git a/keyboards/pica40/rules.mk b/keyboards/pica40/rules.mk
new file mode 100644
index 0000000000..9670889712
--- /dev/null
+++ b/keyboards/pica40/rules.mk
@@ -0,0 +1 @@
+DEFAULT_FOLDER = pica40/rev2