Wall-E was constructed around a Wild Thumper chassis. Both the robot and the controller have an Arduino and a Raspberry Pi. The motors are controlled in two sections by a SparkFun Monster Moto shield. The Arduino on the controller is connected via USB to the first Raspberry Pi, where its instructions are transferred over wifi to the robot. The second Raspberry Pi passes the data to the second Arduino, which then controls the motors through the shield. We also used a SparkFun Joystick Shield Kit as our input method.