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Topic: uno powersupply and usb (Read 392 times) previous topic - next topic

grendle

is it safe to have the power supply running the arduino uno AND the usb cable plugged in? just curious. thank you.

retrolefty


is it safe to have the power supply running the arduino uno AND the usb cable plugged in? just curious. thank you.


Yes, you can have both USB connector plugged into a PC and an external DC voltage source connected to the Uno's external DC connector at the same time. If both connectors have power then the Uno's internal auto-voltage selector will utilize the external voltage source to power the board.

Lefty

grendle


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