Lecture Notes Day 9

Working on final project.
- Communication project. Two robots moving randomly. Each has a light on top, and a light sensor to seek the other's light. When they encounter, they both stop and send a "greeting" (message) to each other. One plays a tune.
- Piano playing. A "hand" that can independently touch four keys on a piano keyboard. The tune to be played is stored in the computer's memory.
- "Mars rover" prototype. Legged robbot, with a light-seeking "solar panel".
- Robo-dog. It follows a path (in the maze) with two light-sensors ("nose").