Recipes

• Reading a photoresistor: how light is it?
  • The voltage divider
  • Arduino code to read an analog value and print via the serial monitor
• Reading an infrared proximity sensor: how far is it?
  • The circuit
  • Arduino code to read an analog value and print via the serial monitor
• Reading an ultrasonic ranger: how far is it?
  • The circuit
  • Arduino code to talk to the ultrasonic ranger and print distances via the serial monitor
• Using a hobby servomotor
  • The circuit
  • Arduino code to move the servo around a bit
• Using a transistor to drive a higher-current or -voltage load
  • The circuit
  • Arduino code to move the servo around a bit