![Picture](/uploads/1/0/1/8/10185060/6350786.png?649)
Follow this link to discover the dimensions of the arduino boards.
This will help you build your own shields.
http://blog.protoneer.co.nz/arduino-uno-and-mega-dimensions/
This will help you build your own shields.
http://blog.protoneer.co.nz/arduino-uno-and-mega-dimensions/