Arduino laserharp circuit

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Josey, Brian; Salvagno, Anthony; Salvagno, Anthony; koc, Steven j (2012): Arduino laserharp circuit. figshare.
http://dx.doi.org/10.6084/m9.figshare.92060
Retrieved 14:07, Sep 21, 2014 (GMT)

Description

Circuit 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.

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