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Tactile Metronome Persistence of Vision

The Tactile Metronome uses multiplexed display circuitry to use three seven-segment digits with only 10 IO pins. It accomplishes this feat by turning the digits on and off rapidly, showing one at a time, but doing it so fast the human eye sees solid digits lit up. To take this picture, I shook the metronome in front of my camera. During the short time the shutter was open, 12 digits were displayed. Pretty cool stuff.

 

For more details about the Tactile Metronome: wayneandlayne.com/metronome/

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Taken on September 28, 2009