Robots can be hard and frustrating to build, but not exactly every robot. Take the Tiny Altoid Tin Robot for example. Its simple, yet fun to construct. The amazing thing about this little bot is that it reacts to the sound that it hears. In fact, you can get this bot up and running with a few scrap parts and a few other parts from Radio Shack! Below is a video of it in action, and click here for building instructions.
