Quote Originally Posted by tsteever View Post
I am using pins 6, 4 and 2 on the EXP3 port. They are PWM2, Ground, and 5volt respectively.

If you use the firmware I posted and these pins you should be fine as it is working for me. I think i mentioned somewhere that I had intended to use PWM1 but it was later posted that PWM2 can be used. I have that pin defined in my firmware and my abl is working as it should.

I just can't get this thing calibrated to print even close to what I want it to print at. None of the parts are usable as they do not align well at all to the drawings. Everything is slightly too large.

How much too large are your parts? Are they too large in X,Y and Z or just one direction?