Circuit.png (976.8 kB)
Arduino laserharp circuit
figure
posted on 2012-05-13, 15:22 authored by Brian JoseyBrian Josey, Anthony Salvagno, Anthony SalvagnoAnthony Salvagno, Steven j kocCircuit for an Arduino based laserharp made from four resistors, three phototransistors and a speaker. Laser light passes through a diffraction grating at the bottom where it then splits and strikes three different phototransistors. To play a note, one of these beams of light needs to be interrupted.