qmk_firmware/keyboards/keebio/iris/rev4/info.json

{
    "keyboard_name": "Iris Rev. 4",
    "usb": {
        "pid": "0x4256",
        "device_version": "4.0.0"
    },
    "encoder": {
        "rotary": [
            {"pin_a": "B2", "pin_b": "B3"}
        ]
    },
    "backlight": {
        "pin": "B5",
        "levels": 5
    },
    "qmk_lufa_bootloader": {
        "esc_input": "B1",
        "esc_output": "F1",
        "led": "B0",
        "speaker": "C6"
    },
    "split": {
        "soft_serial_pin": "D0",
        "encoder": {
            "right": {
                "rotary": [
                    {"pin_a": "F7", "pin_b": "F6"}
                ]
            }
        }
    },
    "processor": "atmega32u4",
    "bootloader": "qmk-dfu"
}