qmk_firmware/keyboards/keebio/iris/rev3/info.json

{
    "keyboard_name": "Iris Rev. 3",
    "usb": {
        "pid": "0x3256",
        "device_version": "3.0.0"
    },
    "encoder": {
        "rotary": [
            {"pin_a": "B5", "pin_b": "B7"}
        ]
    },
    "backlight": {
        "pin": "B6",
        "levels": 5
    },
    "qmk_lufa_bootloader": {
        "esc_input": "D2",
        "esc_output": "F1",
        "led": "B0",
        "speaker": "C6"
    },
    "split": {
        "soft_serial_pin": "D0"
    },
    "processor": "atmega32u4",
    "bootloader": "qmk-dfu"
}