qmk_firmware/keyboards/hadron/ver3/info.json

{
    "usb": {
        "device_version": "0.0.3"
    },
    "encoder": {
        "rotary": [
            {"pin_a": "B13", "pin_b": "B14"}
        ]
    },
    "processor": "STM32F303",
    "bootloader": "stm32-dfu",
    "board": "QMK_PROTON_C"
}