Add new keyboard "Palmbrain" (#25377)

Co-authored-by: Duncan Sutherland <dunk2k_2000@hotmail.com>
Co-authored-by: Joel Challis <git@zvecr.com>
Co-authored-by: jack <0x6a73@protonmail.com>

keyboards/takashicompany/palmbrain/config.h

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+// Copyright 2025 takashicompany (@takashicompany)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#define EE_HANDS

keyboards/takashicompany/palmbrain/keyboard.json

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+{
+    "manufacturer": "takashicompany",
+    "keyboard_name": "Palmbrain",
+    "maintainer": "takashicompany",
+    "development_board": "promicro",
+    "dynamic_keymap": {
+        "layer_count": 12
+    },
+    "features": {
+        "bootmagic": true,
+        "extrakey": true,
+        "mousekey": true,
+        "nkro": true
+    },
+    "matrix_pins": {
+        "direct": [
+            ["F5", "D1", "F6", "E6", "F7", "F4", "D0", "C6", "B4", "B1", "D3", "D4", "D7", "B5", "B3", "B2", "B6"]
+        ]
+    },
+    "split": {
+        "enabled": true,
+        "matrix_pins": {
+            "right": {
+                "direct": [
+                    ["F7", "E6", "F6", "D1", "F5", "B1", "B4", "C6", "D0", "F4", "B3", "B5", "D7", "D4", "D3", "B6", "B2"]
+                ]
+            }
+        },
+        "serial": {
+            "pin": "D2"
+        }
+    },
+    "url": "https://github.com/takashicompany/palmbrain",
+    "usb": {
+        "device_version": "1.0.0",
+        "pid": "0x0066",
+        "vid": "0x7463"
+    },
+    "community_layouts": ["split_3x5_2"],
+    "layouts": {
+        "LAYOUT_split_3x5_2": {
+            "layout": [
+                {"matrix": [0, 0], "x": 0, "y": 0.45},
+                {"matrix": [0, 1], "x": 0.9, "y": 0.225},
+                {"matrix": [0, 2], "x": 1.8, "y": 0},
+                {"matrix": [0, 3], "x": 2.7, "y": 0.225},
+                {"matrix": [0, 4], "x": 3.6, "y": 0.45},
+                {"matrix": [1, 0], "x": 7.2, "y": 0.45},
+                {"matrix": [1, 1], "x": 8.1, "y": 0.225},
+                {"matrix": [1, 2], "x": 9, "y": 0},
+                {"matrix": [1, 3], "x": 9.9, "y": 0.225},
+                {"matrix": [1, 4], "x": 10.8, "y": 0.45},
+                {"matrix": [0, 5], "x": 0, "y": 1.35},
+                {"matrix": [0, 6], "x": 0.9, "y": 1.125},
+                {"matrix": [0, 7], "x": 1.8, "y": 0.9},
+                {"matrix": [0, 8], "x": 2.7, "y": 1.125},
+                {"matrix": [0, 9], "x": 3.6, "y": 1.35},
+                {"matrix": [1, 5], "x": 7.2, "y": 1.35},
+                {"matrix": [1, 6], "x": 8.1, "y": 1.125},
+                {"matrix": [1, 7], "x": 9, "y": 0.9},
+                {"matrix": [1, 8], "x": 9.9, "y": 1.125},
+                {"matrix": [1, 9], "x": 10.8, "y": 1.35},
+                {"matrix": [0, 10], "x": 0, "y": 2.25},
+                {"matrix": [0, 11], "x": 0.9, "y": 2.025},
+                {"matrix": [0, 12], "x": 1.8, "y": 1.8},
+                {"matrix": [0, 13], "x": 2.7, "y": 2.025},
+                {"matrix": [0, 14], "x": 3.6, "y": 2.25},
+                {"matrix": [1, 10], "x": 7.2, "y": 2.25},
+                {"matrix": [1, 11], "x": 8.1, "y": 2.025},
+                {"matrix": [1, 12], "x": 9, "y": 1.8},
+                {"matrix": [1, 13], "x": 9.9, "y": 2.025},
+                {"matrix": [1, 14], "x": 10.8, "y": 2.25},
+                {"matrix": [0, 15], "x": 3.6, "y": 3.375},
+                {"matrix": [0, 16], "x": 4.5, "y": 3.375},
+                {"matrix": [1, 15], "x": 6.3, "y": 3.375},
+                {"matrix": [1, 16], "x": 7.2, "y": 3.375}
+            ]
+        }
+    }
+}

keyboards/takashicompany/palmbrain/keymaps/default/keymap.c

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+// Copyright 2025 takashicompany (@takashicompany)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+    [0] = LAYOUT_split_3x5_2(
+        LT(4, KC_Q), KC_W, KC_E, LT(3, KC_R), KC_T, KC_Y, KC_U, KC_I, KC_O, KC_P,
+        KC_A, KC_S, LT(4, KC_D), KC_F, KC_G, KC_H, KC_J, LT(3, KC_K), KC_L, KC_ENT,
+        LSFT_T(KC_Z), LGUI_T(KC_X), KC_C, KC_V, KC_B, KC_N, KC_M, KC_COMM, LCTL_T(KC_DOT), KC_BSPC,
+        LALT_T(KC_LNG2), LSFT_T(KC_TAB), LT(2, KC_SPC), LT(1, KC_LNG1)
+    ),
+    
+    [1] = LAYOUT_split_3x5_2(
+        KC_1, KC_2, KC_3, KC_4, KC_5, KC_6, KC_7, KC_8, KC_9, KC_0,
+        LCTL_T(KC_EQL), KC_LBRC, KC_SLSH, KC_MINS, KC_INT1, KC_SCLN, KC_QUOT, KC_RBRC, KC_NUHS, KC_INT3,
+        LSFT_T(KC_PLUS), KC_LCBR, KC_QUES, KC_UNDS, LSFT(KC_INT1), KC_COLN, KC_DQUO, KC_RCBR, LSFT(KC_NUHS), LSFT(KC_INT3),
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS
+    ),
+    
+    [2] = LAYOUT_split_3x5_2(
+        KC_EXLM, KC_AT, KC_HASH, KC_DLR, KC_PERC, KC_CIRC, KC_AMPR, KC_ASTR, KC_LPRN, LGUI(KC_INT3),
+        KC_PLUS, KC_LCBR, KC_QUES, KC_UNDS, LSFT(KC_INT1), KC_COLN, KC_DQUO, KC_RCBR, LSFT(KC_NUHS), LSFT(KC_INT3),
+        KC_LSFT, KC_LGUI, KC_LALT, KC_LNG2, KC_LSFT, KC_SPC, KC_LNG1, KC_TRNS, KC_TRNS, KC_DEL,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS
+    ),
+    
+    [3] = LAYOUT_split_3x5_2(
+        KC_ESC, KC_TAB, KC_UP, KC_NO, KC_NO, KC_NO, KC_NO, KC_UP, KC_NO, KC_NO,
+        KC_LCTL, KC_LEFT, KC_DOWN, KC_RGHT, KC_NO, KC_NO, KC_LEFT, KC_DOWN, KC_RGHT, KC_NO,
+        KC_LSFT, KC_LGUI, KC_LALT, KC_LNG2, KC_TRNS, KC_NO, KC_LNG1, KC_NO, KC_NO, KC_DEL,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS
+    ), 
+    
+    [4] = LAYOUT_split_3x5_2(
+        KC_NO, KC_TAB, KC_NO, KC_NO, KC_F1, KC_F2, KC_F3, KC_F4, KC_F5, KC_F6,
+        KC_NO, KC_NO, KC_NO, KC_NO, KC_F7, KC_F8, KC_F9, KC_F10, KC_F11, KC_F12,
+        KC_LSFT, KC_NO, KC_NO, KC_NO, KC_TRNS, KC_TRNS, KC_TRNS, KC_NO, MO(5), KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS
+    ),
+    
+    [5] = LAYOUT_split_3x5_2(
+        UG_TOGG, UG_NEXT, UG_HUEU, UG_SATU, UG_VALU, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_NO, KC_NO, KC_NO, KC_NO, KC_NO,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_NO, KC_NO, QK_BOOT, KC_NO, KC_NO, KC_NO, KC_NO,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS
+    )
+};

keyboards/takashicompany/palmbrain/readme.md

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+# Palmbrain
+
+![takashicompany/Palmbrain](https://i.imgur.com/Og9lYip.jpeg)
+
+Palmbrain is a 34-key split keyboard with a key pitch of 17 mm (0.9 u).  
+It can be equipped with BLE Micro Pro and is also compatible with wireless connectivity.
+
+Palmbrainは17mm(0.9u)のキーピッチを採用した34キーの分割型のキーボードです。  
+BLE Micro Proを搭載することが可能で、無線化にも対応しています。
+
+* Keyboard Maintainer: [takashicompany](https://github.com/takashicompany)
+* Hardware Supported: PCB, Pro Micro development board.
+* Hardware Availability: https://github.com/takashicompany/palmbrain
+
+Make example for this keyboard (after setting up your build environment):
+
+    make takashicompany/palmbrain:default
+
+Flashing example for this keyboard:
+
+    make takashicompany/palmbrain: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 `QK_BOOT` if it is available