qmk_firmware/keyboards/massdrop/thekey/info.json

{
    "keyboard_name": "The Key",
    "manufacturer": "Drop",
    "url": "https://drop.com/buy/stack-overflow-the-key-macropad",
    "maintainer": "massdrop",
    "usb": {
        "vid": "0xFEED",
        "pid": "0x0000",
        "device_version": "0.0.1"
    },
    "matrix_pins": {
        "cols": ["D2", "D1", "D0"],
        "rows": ["D4"]
    },
    "diode_direction": "ROW2COL",
    "backlight": {
        "pin": "B6"
    },
    "processor": "atmega32u4",
    "bootloader": "atmel-dfu",
    "layouts": {
        "LAYOUT": {
            "layout": [
                { "label": "K00 (D4,D2)", "x": 0, "y": 0 },
                { "label": "K01 (D4,D1)", "x": 1, "y": 0 },
                { "label": "K02 (D4,D0)", "x": 2, "y": 0 }
            ]
        }
    }
}