qmk_firmware/keyboards/foobar/info.json

{
    "keyboard_name": "foobar",
    "url": "",
    "maintainer": "qmk",
    "width": 6,
    "height": 2,
    "layouts": {
        "LAYOUT_macro": {
            "key_count": 15,
            "layout": [
              {"x":0, "y":0}, {"x":1, "y":0}, {"x":2, "y":0}, {"x":3, "y":0}, {"x":4, "y":0},
              {"x":0, "y":1}, {"x":1, "y":1}, {"x":2, "y":1}, {"x":3, "y":1}, {"x":4, "y":1},
              {"x":0, "y":2}, {"x":1, "y":2}, {"x":2, "y":2}, {"x":3, "y":2}, {"x":4, "y":2}
            ]
        },
        "LAYOUT_split": {
            "key_count": 30,
            "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":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":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}
            ]
        }
    }
}