For our second project, we had to navigate a maze, again without the use of a microcontroller. We were given the option to either use an external controller or to go autonomous. I chose to make an autonomous robot. Instead of relying on circuits though, I developed a mechanical solution to the maze using a large outer wheel encircling the robot and two coaxial wheels on the ground. Only one of the bottom wheels is powered, causing the robot to consisently drift into the righthand wall. Upon making contact with the wall, the outer wheel rides along the wall, turning the robot at lefthand turns, while the robot simply drifts around righthand turns. By simply powering these two wheels with a voltage regulator, the robot passively solves the maze. I also left in the option to control the robot remotely, but the passive solution was actually faster.