The classic Nano is the oldest member of the Arduino Nano family boards. It is similar to the Arduino Duemilanove but made for the use of a breadboard and has no dedicated power jack. Successors of the classic Nano are for example the Nano 33 IoT featuring a WiFi module or the Nano 33 BLE Sense featuring Bluetooth® Low Energy and several environment sensors.
A communication protocol that can be used to set up communication between two boards.
With a length of 45 mm and a width of 18 mm the Nano is Arduino's smallest board and weighs only 7 grams.
