This is my arduino tank that I made. It's controlled by means of an xbox wireless controller. The tank is made of an Arduino Mega, Arduino USB 2.0 host shield, DC 12V to 5V Step-Down Power Supply Module, 9.6V 2200mAh NI-MH Rechargeable Battery Pack (powering the Arduino) , 8x AA battery pack (powering the motors) Tamiya tank chassis with double independent gearbox powered with two 3v motors via a h-bridge motor controller. The sketch is based on the xboxrecv.ino example of the USB Host Library 2.0 hosted on GitHub by Kristian Lauszus from circuits@home
