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Author Topic: Arduino UNO and a DC power supply  (Read 870 times)
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Can i connect my arduino to the computer through a USB and at the same time i plug in my DC power supply,I wonder if it is possible because some times i watch clips on youtube when guys are doing it
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Yes, it is allowed.
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Shannon Member
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There is an automatic changeover circuit that permits this since the Duemilanova board.  Its very useful when programming a board in situ.
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