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keep z motors engaged while printer powered on
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The z motor drivers appear to be turning off after a while of inactivity, causing the Z axis to fall which must then be rehomed and leveled.
I suggest keeping them engaged unless an M84 is issued like we did for hibiscus.

Event Timeline

logan created this task.Jan 4 2019, 12:01 PM
logan triaged this task as Normal priority.
logan created this object with edit policy "LulzBot Hardware Products (Project)".
marcio added a comment.Jan 4 2019, 2:44 PM

I need more information on exactly when the steppers are being disabled. As far as I can tell, Marlin is properly configured not to turn off the Z motors due to inactivity, so we need to figure out under what circumstance it is happening.

karrad added a subscriber: karrad.Jan 4 2019, 2:47 PM

It looks like at the end of a print we are disabling all stepper motors:

M77			       ; stop GLCD timer
M84                            ; steppers off
G90                            ; absolute positioning
M117 Print complete            ; progress indicator message
marcio added a comment.Jan 4 2019, 2:50 PM

Well, don't do that :P

karrad added a comment.Jan 4 2019, 2:52 PM

@marcio Well geeze, why didnt you say so earlier!

@logan got this one pushed to master, going to close this one out. Let us know if it pops up again

karrad closed this task as Resolved.Jan 4 2019, 2:52 PM
logan added a comment.Jan 4 2019, 2:52 PM

@karrad Will do, thanks. Maybe it was just taking me a while to notice the motors off