The Arduino Nano itself is the most basic and oldest of the group, and just like its many iterations, it's designed to work primarily with breadboards, making it a great tool for prototyping.

Arduino Nano R4 pinout diagram Two SKUs are offered for the Arduino Nano R4: ABX00143 with headers ideal for breadboard projects ($13.30) and ABX00142 without headers ($12.10) to solder the board to a ...