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LED Sign Help

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LED Sign Help

Postby mortyBox » Mon Jun 01, 2015 12:09 am

Hey all...

I haven't done this in a very long time, and can't remember how to calculate R1, R2 and R3. Please see attached schematic.

[img]http://www.rfidonestopshop.com/Untitled.png[/img]
mortyBox
 
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