If you have a controller from GameSir, PowerA, Turtle Beach, Victrix (PDP), Razer, or 8BitDo, you won't need to dabble in ...
This will not work with Arduino IDE 1.6.5 (or below) or with non ESP32-S2/S3 devices (e.g. Arduino UNO, Arduino MEGA, etc.). To use this library you need to have Arduino core for the ESP32 installed.