Read more: Major PC Monitor Brands Ranked Worst To Best The board that started Arduino's Nano ... of 7 to 12V. The only difference, aside from the obvious size, is the lack of power barrel ...

You can connect a 6 to 20V external power supply here, but the recommended voltage and current ratings are 7 to 12V and 1A only. The Arduino Nano and Uno are equipped with very similar processors ...