So I got John’s grbl code installed on my stock ramps 1.4 board with dual end stop switches and a z axis touch plate. All of this was working properly under Marlin but with grbl x and y work as expected and home works for them as expected. The Z axis does not move under any command that I have tried.
Now there is no tool in the spindle and therefore no z probe touch which if I understand means it doesn’t know about z = zero when it homes but how can that work since touch plate is normally open by design ???
Clearly I am missing something stupid …
Would someone be so kind to point it out …
Just an aside but it would be wonderful if there was a dedicated thread for grbl that the search function could point you too … there are hundreds of posts about this topic and it gets very confusing trying to keep the details straight and the weakness of the search function doesn’t help much either.