qmk-firmware/keyboards/rotr/info.json

{
    "keyboard_name": "ROTR", 
    "manufacturer": "ROTR",
    "url": "https://geekhack.org/index.php?topic=107104.0", 
    "maintainer": "qmk", 
    "usb": {
        "vid": "0x726F",
        "pid": "0x0001",
        "device_version": "0.0.1"
    },
    "matrix_pins": {
        "cols": ["D1", "D0", "D4"],
        "rows": ["E6"]
    },
    "diode_direction": "COL2ROW",
    "encoder": {
        "rotary": [
            {"pin_a": "C6", "pin_b": "D7", "resolution": 2}
        ]
    },
    "processor": "atmega32u4",
    "bootloader": "caterina",
    "layouts": {
        "LAYOUT": {
            "layout": [{"x":0, "y":0}, {"x":1, "y":0}, {"x":2, "y":0}]
        }
    }
}