Hi I'm new to Arduino and have a question. In my project I have a large 5 volt regulated power supply. I want to power the Arduino with this supply. Can I simply connect the 5V out of my power supply to the +5V pin on the power connector or will this cause problems with the on-board power circuitry?
We could figure out where the load was the drained the battery so fast.
The power lead in a USB cable is a piece of wire that can take power either direction. It is not really a problem or a symptom, it is just an interesting condition. Now that USB supplies power to many devices, there is one more set of things to consider.
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