The Arduino Nano DIP is the smallest complete Arduino board ever. It's compatible with the Arduino Uno, but surprisingly, it has the same size as the ATmega328P-PU chip itself: 33 x 10mm. Nano DIP: the smallest Arduino Nano board 33 x 10mm Selling at Elecrow You can buy the Nano DIP at Elecrow. Smallest complete Arduino board: the Nano DIP 33x10mm Advantages of the Arduino Nano DIP Unparalleled compactness, being the smallest Arduino board ever developed. Its DIP26 size of 33 x 10mm allows for e...