The Arduino Nano and Uno are equipped with very similar processors (the chip that essentially serves as the brain of the board). The Nano features an ATmega328, while the Uno sports an ATmega328P.

Options to power the Arduino Nano include USB, VIN, and 5 volt pin, meaning you have power options for almost any situation.

The Arduino team explain more about the origins of the iconic Arduino UNO microcontroller “As familiar as we all are with the UNO, there’s probably a lot you don’t know about the iconic ...