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Topic: safe to upload to externally powered Arduino Mega? (Read 433 times) previous topic - next topic

scottmcphee

If I leave a Mega externally powered all the time, connected to its barrel jack.... is it safe to plug the USB into my computer for uploading a new program to it?  Or does this create an unsafe 5V conflict with my computer's USB port, and/or stress the voltage selection circuitry on the Mega?

thanks

PaulS

The Mega switches power sources automatically. It is safe to have both connected at the same time.

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