qmk-firmware/keyboards/bemeier/bmek/rev1/info.json

{
    "usb": {
        "device_version": "0.0.1"
    },
    "matrix_pins": {
        "cols": ["F1", "B0", "B1", "B2", "B3", "D0", "D1", "D2", "C6", "C7", "F7", "F6", "F5", "F4", "B5"],
        "rows": ["D4", "D7", "B6", "B4", "B7"]
    },
    "diode_direction": "COL2ROW",
    "processor": "atmega32u4",
    "bootloader": "atmel-dfu"
}