keychron_qmk_firmware/keyboards/keebio/bdn9/rev1/info.json

{
    "keyboard_name": "BDN9 Rev. 1",
    "usb": {
        "pid": "0x1133",
        "device_version": "1.0.0"
    },
    "backlight": {
        "pin": "B5",
        "levels": 7
    },
    "processor": "atmega32u4",
    "bootloader": "caterina",
    "matrix_pins": {
        "direct": [
            ["D2", "D4", "F4"],
            ["D7", "B1", "B3"],
            ["E6", "B4", "B2"]
        ]
    }
}