qmk_firmware/keyboards/handwired/prkl30/feather/info.json

{
    "ws2812": {
        "pin": "D1"
    },
    "matrix_pins": {
        "cols": ["D3", "D1", "B7", "D6", "C7", "B6", "B5", "D7", "C6", "D0"],
        "rows": ["F4", "F1", "F0", "D2"]
    },
    "diode_direction": "COL2ROW",
    "encoder": {
        "rotary": [
            {"pin_a": "F7", "pin_b": "F6"}
        ]
    }
}