Ultrasonic Sensor Motion-Detecting Cardboard Car!

My first CS projects were with the arduino. My room has traces of the arduino everywhere, including an overflowing box of multicolored LED lights, wires, ultrasonic senors, displays, and more (accumulated over the years). I love returning to the arduino when I have time, tinkering away with C++ and all of the hardware. I created this project at the beginning of high school. It's an autonomous arduino car with the ability to detect its surroundings using an ultrasonic sensor.

These are two iterations of the same car. I like the second design better because it reminds me of Wall-E :)