I got my Arduino yesterday (and it's a lot of fun)! I just have a (silly) question.. Is it okay to have a led running across a High and a Low output? And is the Low output the same as ground? I am just playing around with a small matrix, but without really any IC's to use - so I can't connect all t…

Led across two outputs?

system February 28, 2007, 9:10pm 5

Did you forget to switch the jumper to external power mode?

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