Tag: batman

Colorful mass: LED bar for bikes

While cleaning up my office, i rediscovered our color LED bar that paints colorful images while you ride your bike. The Persistence of Vision (PoV) device is mounted into a bike wheel – it consists of 34 RGB-LEDs and an MSB-A2 wireless sensor node. The sensor node measures the bike speed and adjusts the LED switch time, so that the whole image is displayed in exactly one full rotation of the wheel. This way, the image appears to be in a fixed location for the observer (provided you ride fast enough). We built it initially for the long night of science,

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