qmk_firmware/keyboards/handwired/onekey/teensy_32/keyboard.json

{
    "keyboard_name": "Onekey Teensy 3.2",
    "processor": "MK20DX256",
    "bootloader": "halfkay",
    "matrix_pins": {
        "cols": ["D5"],
        "rows": ["B2"]
    }
}