qmk_firmware/keyboards/doio/kb16/rev2/info.json

{
    "usb": {
        "device_version": "0.0.2"
    },
    "matrix_pins": {
        "cols": ["B14", "B13", "B12", "B0", "A7"],
        "rows": ["B3", "B4", "B9", "B8"]
    },
    "encoder": {
        "rotary": [
            {"pin_a": "B5", "pin_b": "B6"},
            {"pin_a": "A1", "pin_b": "A2"},
            {"pin_a": "A3", "pin_b": "A4"}
        ]
    },
    "ws2812": {
        "pin": "A10"
    },
    "processor": "STM32F103",
    "bootloader": "stm32duino"
}