qmk_firmware/keyboards/handwired/onekey/teensy_2pp/keyboard.json

{
    "keyboard_name": "Onekey Teensy 2.0++",
    "processor": "at90usb1286",
    "bootloader": "halfkay",
    "matrix_pins": {
        "cols": ["F4"],
        "rows": ["F5"]
    },
    "backlight": {
        "pin": "B6"
    },
    "ws2812": {
        "pin": "F6"
    },
    "apa102": {
        "data_pin": "F6",
        "clock_pin": "F7"
    }
}