Infrared Hidden Messages

Infrared Persistence of Vision, or IR POV

This project uses a series of LEDs to display two Persistence of Vision (POV) messages, one in visible light and the other in invisible infrared light.  The infrared LEDs are visible by looking at them though a digital camera (still, cell phone camera, video camera, etc). 

Now You See It, Now You Don't

The LEDs display the messages via Persistence of Vision. The LEDs are mounted to the spokes of a bicycle wheel, spun by a fan motor (with speed control). The display is synchronized to center the messages and has Plexiglas covers to protect the viewer from moving parts.

The bicycle wheel is driven by a skateboard wheel powered by multi-speed fan motor. Tension is supplied by the mouse trap (plastic cheese retained for tensile integrity).