Hacked Penguin toy. Arduino light follower / Obstacle Avoider
/* PenguinBot_1 Hacking a Noisy Stuffed Penguin Toy. UNIX_GURU at hotmail dot com or @unix_guru on Twitter http://arduino-pi.blogspot.ca/2014/04/penguinbot-fun-weekend-arduino-project.html
Proportional Steering Servomotor to rock body back and forth. Two photocells to turn toward and follow light. ***** Not yet Implemented Sound Activation... for... something... ? ***** Not yet Implemented Crazy penguin sounds and spooky music. Sonar Obstacle avoidance.
Most functions/Operations are non-blocking...
Given enough time, I would have employed Metro Scheduler http://playground.arduino.cc/Code/Metro and a true Finite State Machine like http://playground.arduino.cc/Code/FiniteStateMachine
*/