Since Arduino Uno and Mega DXF drawings are hard to find (I didn’t find any for the Mega board), I created my own and I am sharing them here with everybody. These are saved in the AutoCAD 2007 DXF format. Enjoy!
Right-click on the link and select “Save link as…”.
Arduino Uno DXF (units: inches)
Arduino Mega DXF (units: millimeters)