My design project was a remote-controlled car. An accelerometer was used as an input, determining the angle of the wheels, the direction in which the motor rotated, and how fast the motor rotated. This information was sent to and from the car using a pair of radio transceivers. The angle of the front wheels was changed using a servo motor and horn, while the rear wheel was driven by a DC motor. The car itself also featured an ultrasonic sensor, taking distance measurements of possible obstacles and sending that information back to the controller. When an obstacle was closer than 10 centimeters, the car would automatically back up and an LED on the controller would light up. The car also featured an autonomous mode, where it drove aimless and avoided obstacles for 2 minutes.