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Programmable Spinning LED Fan

Taiwan-based Polo Tech, which claims a patent on rotating LED fan display technology, has plans for a USB-programmable model, although the release date is undecided, company representative Alice Wang said at Computex in Taipei — The fans generate the display with a rotating stick of circuit board with a vertical line of LEDs on it. This is mounted on the fan’s axis, and spins as the fan spins. Polo Tech’s driver IC can also handle simple animation, and even colour changes, given suitable LEDs. The IC also handles the precise timing calculations required to keep the display steady — To avoid excessive flicker, the rotation speed needs to stay above 2000 RPM, Wang said. The display remained visible even in the bright interior lighting of the Computex hall.

Programmable Spinning LED, Cooling Fan

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