Just watch the green circle go around the little maze, Press the red button reset this is a very simple pathfinding AI, used for the enemies in my game Maze Runner. It is very simple Roomba AI (in case you don't know, a Roomba is a robotic vacuum cleaner that finds it's way by bumping into stuff. It is also a common ride for cats)
iRobot, for making Roombas Cats (for riding Roombas) 15 total blocks, including thumbnail code