qmk_firmware/keyboards/25keys/cassette42/info.json

{
    "keyboard_name": "cassette42",
    "manufacturer": "monksoffunk",
    "url": "http://www.sho-k.co.uk/tech/1246.html",
    "maintainer": "monksoffunk",
    "usb": {
        "vid": "0xFEED",
        "pid": "0xCA42",
        "device_version": "0.0.1"
    },
    "layouts": {
        "LAYOUT": {
            "layout": [{"x":0.5, "y":0.75}, {"x":2.5, "y":0.75}, {"x":0, "y":1.75}, {"x":1, "y":1.75}, {"x":2, "y":1.75}, {"x":3, "y":1.75}]
        }
    }
}