Optical Theremin

Aim

 The goal of this activity is to generate a sound by integrating a photoresistor with an Arduino and buzzer.

Materials Required

  1. Arduino UNO R3 – 1
  2. USB Cable – 1
  3. Several Jumper Wires
  4. LDR – 1
  5. 220ΩResistor-1
  6. Buzzer – 1

Wiring Diagram

Desired Outcome

The buzzer will produce a sound according to the intensity of ambient light as determined by the LDR.