

"RedTed8" is eight LEDs controlled and sequenced (on/off) by Arduino. Each LED is coupled with a photocell; when a LED is active the photocell receives light reducing its electrical resistance allowing the audio to pass through. A flashing LED and photocell cause the audio signal to be cut on and off at a given rate.
Audio sample using a Yamaha Portasound PS-3.
RedTed Number One.mp3