"Persistence of Vision (POV) toy using the Lilypad Arduino platform. From wikipedia, 'Persistence of vision is the phenomenon of the eye by which an afterimage is thought to persist for approximately one twenty-fifth of a second on the retina.' What this means is that, we can flash a set LEDs at specific intervals to create a static or moving image.
The electronics were first stitched onto a piece of fabric, then transferred to a wide band of elastic with velcro bands as fasteners."
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For step-by-step instructions see Instructables link: http://www.instructables.com/