The Micro measures 48 mm in length and 18 mm in width ... Despite the differences in size and microcontroller, the Arduino Nano and Micro share some similar pinout configurations.

The aptly named “Nano DIP,” which at 33 mm x 10 mm — about the same size as the ATmega328 on the Arduino Uno — will tickle the miniaturization fans out there. The board is built around an ...

The Arduino Nano itself is the most basic and oldest ... It comes in a light seven-gram weight, with dimensions of 45 mm (length) by 18 mm (width). The Uno, on the other hand, is much bigger.