modelgraphix
New Member
my project using 500 LED :idea: , need to switch them on/off individually using PC/laptop. :shock: please help
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Relay? that would be expensive and slow...free1 said:U may use a relay that connected to parallel port (D0-D7) to ON/OFF the LEDS. Get some info from http://www.geocities.com/bagtool/parallel_basic.html
free 8)