Created an automated chicken coop door which opens/closes the door based on sunlight.

It consists of:

  1. Chicken coop  
  2. Old wiper motor to drive the door up/down (the door is suspended on fishing line)  
  3. Arduino Nano  
  4. Motor control shield  
  5. Light sensor  
  6. 2 mechanical switches for the door positions (stop the motor if switch is pressed)  
  7. Old car battery  
  8. 3 chinese 12V 15W solar panels