Hi, I'm just getting started with Arduino, and would like to learn a simple way to use it to control some numeric LED digit displays that I have lying around. [image] I don't have the specifications of the LEDs; all I know is that they're common cathode, and that their voltage ratings are somewhe…

Interfacing Arduino with Numeric LEDs

system August 8, 2007, 2:03am 5

And how about doing it via USB power? I just noticed that my external adapter isn't working..

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