qmk_firmware/keyboards/handwired/ck4x4/info.json

{
    "keyboard_name": "CK4x4",
    "url": "",
    "maintainer": "awkannan",
    "layouts": {
        "LAYOUT": {
            "layout": [
                {"x":0, "y":0},
                {"x":1, "y":0},
                {"x":2, "y":0},
                {"x":3, "y":0},

                {"x":0, "y":1},
                {"x":1, "y":1},
                {"x":2, "y":1},
                {"x":3, "y":1},

                {"x":0, "y":2},
                {"x":1, "y":2},
                {"x":2, "y":2},
                {"x":3, "y":2},

                {"x":0, "y":3},
                {"x":1, "y":3},
                {"x":2, "y":3},
                {"x":3, "y":3}
            ]
        }
    }
}