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"
    },
    "encoder": {
        "rotary": [
            {"pin_a": "B6", "pin_b": "B2"},
            {"pin_a": "B3", "pin_b": "B1"}
        ]
    },
    "processor": "atmega32u4",
    "bootloader": "caterina",
    "matrix_pins": {
        "direct": [
            ["B4", "F6", "F5", "F4", "B5", "F7"]
        ]
    },
    "layouts": {
        "LAYOUT": {
            "layout": [
                {"x":0.5, "y":0.75, "matrix": [0, 4]},
                {"x":2.5, "y":0.75, "matrix": [0, 5]},
                {"x":0, "y":1.75, "matrix": [0, 0]},
                {"x":1, "y":1.75, "matrix": [0, 1]},
                {"x":2, "y":1.75, "matrix": [0, 2]},
                {"x":3, "y":1.75, "matrix": [0, 3]}
            ]
        }
    }
}