Quote Originally Posted by ericks View Post
I have this bob....my guess, and its just a guess, is that it could be the pwm from mach3 straight onto that connection. When i get a chance i plan to look at the mach3 pwm on the scope....i will now also look at this output and report back
That would be a good plan, there are a lot that seem to be using this Breakout Board, there are more than ( 1 ) configuration of this Board, even though they look the same there are some differences in the layout