qmk_firmware/keyboards/tominabox1/le_chiffre/rev2/info.json

{
    "usb": {
        "device_version": "0.0.2"
    },
    "encoder": {
        "rotary": [
            {"pin_a": "B6", "pin_b": "C6"}
        ]
    },
    "processor": "atmega32u4",
    "bootloader": "atmel-dfu"
}