nau wrote:
phillc54 wrote: When you said earlier that it worked as a 3 axis config did you then try with the other Y axis as the second axis.
If you are smashing sensors then you probably should try mounting them so that cannot happen.
You mean swap physically pins from Y1 and Y2 axis and home switches? Yes I've swapped that and with XYZ config it works exactly fine.
Also i've decreased homing velocity to 5 and check what happens more clearly. Both Y drives in right direction hit sensors, stop and then it drives Y2 axis (even if both home sensor is ON).
Make sure the axis is deliberately skewed before homing at slow speed. What you should see is both axes proceed towards the home switch. The first one there will stop and wait until the other catches up. Then they both should back off the home switch position in unison, move forward to trigger it again, then move to the home offset position. If one side has a direction of travel wrong, or its looking for the incorrect sensor, it will sail past.
I think the only other thing to check is if it is the current version of 2.8 that you are using. If not then upgrade your config.
I think we have reached the limits of what can be done with remote trouble shooting. The unfortunate thing is that there are thousands of machines that are homing correctly so it not Linuxcnc at fault. You need to walk away for a day or two and then come back with fresh eyes, study the homing configuration docs and resolve the issue.
