Week 12 葉正聖老師示範

1. Analog Read
2. Analog Write
3. Serial Read
4. Serial Write

https://www.arduino.cc/en/Tutorial/Knob
http://www.arduino.cc/en/Tutorial/Sweep

https://www.youtube.com/watch?v=5uQB_Ms7rzA


https://www.youtube.com/watch?v=zJkujJzGfVI


https://www.youtube.com/watch?v=eiAsJCziWys