It also has fewer pins than other boards, and its USB port is somewhat outdated (who ... Ranked Worst To Best The board that started Arduino's Nano family, the Nano is a classic platform ideal ...

The Arduino Nano Connector Carrier is a compact add-on board designed for the Arduino Nano boards to allow easy connection to ...

Although a “CommsLink” module providing an RS-232 port was available back in the day, it’s become hard to find, inspiring [James] to design a completely new module based on an Arduino Nano.