So I have a this board by easy-cnc and I want to add limit siwtches. My question is do I connect the common ground between the switches to the com screw like the diagram shows or do I connect them to the dc ground?
http://img580.imageshack.us/img580/1755/zenbotbox.jpg
This is the diagram located on the website:
http://img513.imageshack.us/img513/2014/newhookup.jpg
