qmk_firmware/keyboards/earth_rover/info.json

{
    "keyboard_name": "earth_rover",
    "url": "https://github.com/bigwheel/earth_rover",
    "maintainer": "k.bigwheel",
    "layouts": {
        "LAYOUT": {
            "layout": [
                {"label": "k10", "x": 1.25, "y": 0},
                {"label": "k20", "x": 2.25, "y": 0},

                {"label": "k01", "x": 0, "y": 1.25},
                {"label": "k11", "x": 1.25, "y": 1.25},
                {"label": "k21", "x": 2.25, "y": 1.25},
                {"label": "k31", "x": 3.5, "y": 1.25},

                {"label": "k02", "x": 0, "y": 2.25},
                {"label": "k12", "x": 1.25, "y": 2.25},
                {"label": "k22", "x": 2.25, "y": 2.25},
                {"label": "k32", "x": 3.5, "y": 2.25},

                {"label": "k03", "x": 0, "y": 3.25},
                {"label": "k13", "x": 1.25, "y": 3.25},
                {"label": "k23", "x": 2.25, "y": 3.25},
                {"label": "k33", "x": 3.5, "y": 3.25}
            ]
        }
    }
}