keychron_qmk_firmware/keyboards/maxipad/promicro/keyboard.json

{
    "matrix_pins": {
        "cols": ["F4", "C6", "D7", "F5", "B4", "B5"],
        "rows": ["B6", "B2", "B3", "B1", "F7"]
    },
    "diode_direction": "COL2ROW",
    "processor": "atmega32u4",
    "bootloader": "caterina"
}