The Arduino Uno is a microcontroller board based on the ATmega328 (datasheet). It has 14 digital input/output pins (of which 6 c
![Arduino Hole Dimensions Drawing « Adafruit Industries – Makers, hackers, artists, designers and engineers! Arduino Hole Dimensions Drawing « Adafruit Industries – Makers, hackers, artists, designers and engineers!](http://farm6.static.flickr.com/5060/5483656277_2d0e3def73.jpg)
Arduino Hole Dimensions Drawing « Adafruit Industries – Makers, hackers, artists, designers and engineers!
What is difference between Arduino Uno and Arduino nano? Can I use nano instead of Uno in my projects? Why do we use Arduino Uno? - Quora
![Arduino Hole Dimensions Drawing « Adafruit Industries – Makers, hackers, artists, designers and engineers! Arduino Hole Dimensions Drawing « Adafruit Industries – Makers, hackers, artists, designers and engineers!](http://farm6.static.flickr.com/5091/5484250200_dc106d9efd.jpg)