5v ref voltage
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5v ref voltage

by Jx1 on Sat May 04, 2013 8:44 am

I am using an arduino uno board - I want to use a voltage divider CCT. My question is this 5v present on the uno board when I connect it to my laptop via usb or do I need to provide an external 5v.
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Re: 5v ref voltage

by adafruit_support_rick on Sat May 04, 2013 11:33 am

The Uno is fully powered when attached to USB.

Do NOT attach another power supply while USB is connected - this has the potential to damage the Uno's power regulator.
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