qmk_firmware/keyboards/bastardkb/dilemma/3x5_2/splinky/info.json

{
    "keyboard_name": "Dilemma (3x5+2) Splinky",
    "matrix_pins": {
        "cols": ["GP8", "GP9", "GP7", "GP6", "GP27"],
        "rows": ["GP4", "GP5", "GP28", "GP26"]
    },
    "diode_direction": "ROW2COL",
    "split": {
        "soft_serial_pin": "GP1"
    },
    "processor": "RP2040",
    "bootloader": "rp2040"
}