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Unread 11-11-2007, 14:26
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Al Skierkiewicz Al Skierkiewicz is offline
Broadcast Eng/Chief Robot Inspector
AKA: Big Al WFFA 2005
FRC #0111 (WildStang)
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Re: Crazy idea involving hundreds of LEDs

Jacob,
LED displays frequently use row/column multiplexing to make moving and animated displays. An LED only needs to be turned on for a short period of time for the human eye to notice it. As long as the refresh rate exceeds 24 Hz (30Hz is the TV vertical frame rate) then the human eye integrates the LEDs into a still or moving frame. You then just need to produce row and column switch generators and output a control signal in sync with the row/column encoder.
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Al
WB9UVJ
www.wildstang.org
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Storming the Tower since 1996.