Magic Trick Using Light Sensors

This is a demo of a basic light sensor circuit. In this example, I’m using 3 photoresistors concealed under a semi-transparent cloth. At the beginning of the trick a chalice covers each photoresistor. When a chalice is lifted, light activates the underlying sensor. The corresponding LED is lit up and the magician can identify the chalice.

Assignment4 Arduino Sketch: Magic Trick with Light Sensors

By Stacey Kuznetsov, stace@cs.cmu.edu
Starring Jen Marlow, Iris Howley, Stephen Oney

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