Why first move of tue bed leveling is going up?
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@arisoy said in Why first move of tue bed leveling is going up?:
@fcwilt Ok so i homed all axis and then i take a video from what happened.
I started the video and just after i send the G32 command.
As you can see at first the bed moves up. I don't want that at all. I want the probe to go at his place first and then the bed can moves up.
Thanks.
I went and watched my printer and it does what yours is doing. That initial Z movement prior to the first probe has never caused me any issues.
You could adjust the initial G1 to move to the first probe XY point.
Frederick
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@infiniteloop I did it. I split the G1 in two. The G1 command works fine.
But after that the G30 command moves the bed up again and fast close to the probe. And then the probing starts.
So if the bed is not leveled the bed will crash to the probe during this first fast move.
I don't want to add some mouvement before the bed moves up fast. I want it to not do that. It should probe directly not move up first.
Like it's done when you home your printer. When homing the Z i can start it from the bottom and the bed will slowly search the probe. It wil not move fast and then start to probe.
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@arisoy said in Why first move of tue bed leveling is going up?:
@infiniteloop I did it. I split the G1 in two. The G1 command works fine.
But after that the G30 command moves the bed up again and fast close to the probe. And then the probing starts.
So if the bed is not leveled the bed will crash to the probe during this first fast move.
I don't want to add some mouvement before the bed moves up fast. I want it to not do that. It should probe directly not move up first.
Like it's done when you home your printer. When homing the Z i can start it from the bottom and the bed will slowly search the probe. It wil not move fast and then start to probe.
A Z probe can have this issue with a bed setup like yours (and mine).
I dealt with it by having a Z endstop switch for each Z axis.
See this video which starts with the bed way out of level. It homes and "levels" using the Z endstops. At the point it is level enough that the Z probe can always do the final leveling without issue.
You might try adjusting the H5 parameter to H10 or H15 to see how that affects the behavior.
Frederick
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@fcwilt Ok i think i'll maybe do the Z home like this too.
Thanks you all for your patience and for your help
