qmk_firmware/keyboards/bastardkb/charybdis/3x5/v2/splinky_3/info.json

{
    "keyboard_name": "Charybdis Nano (3x5) Splinky",
    "usb": {
        "device_version": "2.0.0"
    },
    "rgb_matrix": {
        "driver": "WS2812"
    },
    "matrix_pins": {
        "cols": ["GP28", "GP21", "GP6", "GP7", "GP8"],
        "rows": ["GP26", "GP5", "GP4", "GP9"]
    },
    "diode_direction": "ROW2COL",
    "split": {
        "soft_serial_pin": "GP1"
    },
    "ws2812": {
        "pin": "GP0",
        "driver": "vendor"
    },
    "processor": "RP2040",
    "bootloader": "rp2040"
}