Hi Dan, and everyone else, This is my first foray into 3d printing, and have done a small amount of arduino tinkering in the past. I just bought a Folgertech 2020 Prusa i3 (w/out LCD) and finished putting it together last night. I set all the stepper motor board potentiometers to the corresponding voltage in the build guide (side note, I was within .05 mv on some, and just couldnt adjust it fineby RichOaks - Prusa i3 and variants