qmk_firmware/keyboards/dumbo/info.json

{
    "keyboard_name": "Dumbo",
    "url": "",
    "maintainer": "adamnaldal",
    "width": 15.5,
    "height": 5.25,
    "layouts": {
        "LAYOUT_split_3x6_4": {
            "layout": [
                {"x":0, "y":1.25},
                {"x":1, "y":1},
                {"x":2, "y":0.25},
                {"x":3, "y":0},
                {"x":4, "y":0.5},
                {"x":5, "y":0.75},

                {"x":9.5, "y":0.75},
                {"x":10.5, "y":0.5},
                {"x":11.5, "y":0},
                {"x":12.5, "y":0.25},
                {"x":13.5, "y":1},
                {"x":14.5, "y":1.25},

                {"x":0, "y":2.25},
                {"x":1, "y":2},
                {"x":2, "y":1.25},
                {"x":3, "y":1},
                {"x":4, "y":1.5},
                {"x":5, "y":1.75},

                {"x":9.5, "y":1.75},
                {"x":10.5, "y":1.5},
                {"x":11.5, "y":1},
                {"x":12.5, "y":1.25},
                {"x":13.5, "y":2},
                {"x":14.5, "y":2.25},

                {"x":0, "y":3.25},
                {"x":1, "y":3},
                {"x":2, "y":2.25},
                {"x":3, "y":2},
                {"x":4, "y":2.5},
                {"x":5, "y":2.75},

                {"x":9.5, "y":2.75},
                {"x":10.5, "y":2.5},
                {"x":11.5, "y":2},
                {"x":12.5, "y":2.25},
                {"x":13.5, "y":3},
                {"x":14.5, "y":3.25},

                {"x":3.25, "y":3.75},
                {"x":4.25, "y":3.75, "h":1.5},
                {"x":5.25, "y":3.75, "h":1.5},
                {"x":6.25, "y":4.25},

                {"x":8.25, "y":4.25},
                {"x":9.25, "y":3.75, "h":1.5},
                {"x":10.25, "y":3.75, "h":1.5},
                {"x":11.25, "y":3.75}
            ]
        }
    }
}