qmk_firmware/keyboards/handwired/floorboard/info.json

{
    "keyboard_name": "Floorboard",
    "url": "https://imgur.com/gJLgwQI",
    "maintainer": "Kevin Lockwood",
    "width": 12,
    "height": 4,
    "layouts": {
        "LAYOUT_ortho_4x12": {
            "layout": [
                {"x":0, "y":0},
                {"x":1, "y":0},
                {"x":2, "y":0},
                {"x":3, "y":0},
                {"x":4, "y":0},
                {"x":5, "y":0},
                {"x":6, "y":0},
                {"x":7, "y":0},
                {"x":8, "y":0},
                {"x":9, "y":0},
                {"x":10, "y":0},
                {"x":11, "y":0},

                {"x":0, "y":1},
                {"x":1, "y":1},
                {"x":2, "y":1},
                {"x":3, "y":1},
                {"x":4, "y":1},
                {"x":5, "y":1},
                {"x":6, "y":1},
                {"x":7, "y":1},
                {"x":8, "y":1},
                {"x":9, "y":1},
                {"x":10, "y":1},
                {"x":11, "y":1},

                {"x":0, "y":2},
                {"x":1, "y":2},
                {"x":2, "y":2},
                {"x":3, "y":2},
                {"x":4, "y":2},
                {"x":5, "y":2},
                {"x":6, "y":2},
                {"x":7, "y":2},
                {"x":8, "y":2},
                {"x":9, "y":2},
                {"x":10, "y":2},
                {"x":11, "y":2},

                {"x":0, "y":3},
                {"x":1, "y":3},
                {"x":2, "y":3},
                {"x":3, "y":3},
                {"x":4, "y":3},
                {"x":5, "y":3},
                {"x":6, "y":3},
                {"x":7, "y":3},
                {"x":8, "y":3},
                {"x":9, "y":3},
                {"x":10, "y":3},
                {"x":11, "y":3}
            ]
        }
    }
}