qmk_firmware/keyboards/rgbkb/pan/rev1/proton_c/info.json

{
    "matrix_pins": {
        "cols": ["A8", "A6", "B0", "B1", "B2", "B4", "B5", "A1", "A2", "B3", "B9", "A10", "A9"],
        "rows": ["A15", "B10", "A14", "A13", "A7"]
    },
    "diode_direction": "COL2ROW",
    "processor": "STM32F303",
    "bootloader": "stm32-dfu",
    "board": "QMK_PROTON_C",
    "encoder": {
        "rotary": [
            {"pin_a": "B14", "pin_b": "B15"},
            {"pin_a": "B11", "pin_b": "B12"}
        ]
    }
}