The idea of a fan with LEDs that spell out words as it spins is nothing new, but here’s one that’s programmable via USB. Polo Tech from Taiwan has patented a rotating LED fan display technology that ...
The project was created for displaying characters made of flashing LEDs to draw the image through the rotating board. A ground plane is shown in the left picture having a double-sided PCB with other ...
Most of us have probably seen simple persistence of vision (POV) displays that rotate a few LEDs on fan blades. Coin Mechanisms Inc. has taken the idea Most of us have probably seen simple persistence ...
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