I posted this on another subforum, but I got only one opinion, so I am hoping for better results here. I designed a shield that powers Arduino Uno with 5V trough +5V pin. For testing purposes I need to connect Uno to PC, and shield to 12V, but shield has a 5V regulator that powers Arduino Uno.. W…

external 5V at +5V pin, and USB connection

system March 9, 2011, 8:22am 12

I cut the 5v lead.

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