Powering Up Arduino Nano

The Arduino Nano is a small, complete, and breadboard-friendly board based on the ATmega328P (Arduino Nano 3.x). It has more or less the same functionality of the Arduino Duemilanove, but in a different package. It lacks only a DC power jack, and works with a Mini-B USB cable instead of a standard one.

The Arduino Nano can be powered via the Mini-B USB Jack (5V) connection. 


The Arduino Nano accepts the 7V to 12V input power from the Vin pin (pin30).


If you want to supply regulated power, then a 5V regulated adapter needs to feed the +5V pin (pin27) instead.


The power source is automatically selected to the highest voltage source if you input multiple power inputs.

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