Weird intermittent bug involving proximity sensors and homing

Todd Zuercher wrote: Sounds like a wiring problem somewhere. Check all your connections, plugs, etc. You said you found one loose connection, there could be others.

Been checking ... didn't find anything ... must be a design error on my part for the grounding ...

be aware that cage clamp screw terminals can be 100% tight but that is no good if the wire is below the cage. So you need to pull each wire as well as check the screws.