I whipped up this Z axis “0” setter with some stuff I had cluttering up my bench. I know it looks all kinds of “Junk Yard Wars” but it it right now a proof of concept.
It is comprised of 16g sheet metal, a 9 volt battery, an auto circuit tester an a few alligator clips. The block of wood is to keep the sheet metal from sliding down the back.
are you aware that you could eliminate your entire circuit and attach the plate and clip to the arduino and (once you enable an option) have a button that will run the Z down to 0 for you?
