diff --git a/keyboards/pica40/info.json b/keyboards/pica40/info.json
new file mode 100644
index 00000000000..6c9dbb76d93
--- /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 00000000000..010a29cceeb
--- /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 00000000000..ec422c4d8e4
--- /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 00000000000..6cff7cfa278
--- /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 00000000000..afd8d2c6bf7
--- /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 00000000000..c9efb58d92c
--- /dev/null
+++ b/keyboards/pica40/readme.md
@@ -0,0 +1,29 @@
+# pica40
+
+
+
+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 00000000000..09c481a9fff
--- /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 00000000000..8e4e64618de
--- /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 00000000000..f008e4857a1
--- /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 00000000000..964038eefb4
--- /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 00000000000..2e3ef9fb844
--- /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 00000000000..1a59bee3dde
--- /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 00000000000..99540900b94
--- /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 00000000000..e4dda1925ba
--- /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 00000000000..c585ec56d66
--- /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 00000000000..473011fbb03
--- /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 00000000000..8fb51ec82d5
--- /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 00000000000..96708897128
--- /dev/null
+++ b/keyboards/pica40/rules.mk
@@ -0,0 +1 @@
+DEFAULT_FOLDER = pica40/rev2