qmk-firmware/keyboards/40percentclub/polyandry/promicro/info.json

{
    "matrix_pins": {
        "cols": ["D1", "D0", "D4", "C6", "E6", "B4", "F4", "F5", "F6", "F7", "B3", "B2"],
        "rows": ["D7"]
    },
    "diode_direction": "COL2ROW",
    "processor": "atmega32u4",
    "bootloader": "caterina",
    "layouts": {
        "LAYOUT_ortho_4x3": {
            "layout": [
                {"matrix": [0, 0], "x": 0, "y": 0},
                {"matrix": [0, 1], "x": 1, "y": 0},
                {"matrix": [0, 2], "x": 2, "y": 0},

                {"matrix": [0, 3], "x": 0, "y": 1},
                {"matrix": [0, 4], "x": 1, "y": 1},
                {"matrix": [0, 5], "x": 2, "y": 1},

                {"matrix": [0, 6], "x": 0, "y": 2},
                {"matrix": [0, 7], "x": 1, "y": 2},
                {"matrix": [0, 8], "x": 2, "y": 2},

                {"matrix": [0, 9], "x": 0, "y": 3},
                {"matrix": [0, 10], "x": 1, "y": 3},
                {"matrix": [0, 11], "x": 2, "y": 3}
            ]
        }
    }
}