seemecnc max v3.2 with bltouch and bed leveling not working
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So I think this is an effector tilt problem. I put on a 713maker duet smart effector adapter, no wires and a bubble level. The bubble moves from one side of the circle to the other as I move the effector around.
So lerhaps a new question. Shoukd autocalibrate be able to compensate for effector tilt? -
Auto calibration cannot compensate either for effector tilt or for the other consequences of the geometrical errors that cause it. See https://duet3d.dozuki.com/Wiki/Calibrating_a_delta_printer#Section_Make_sure_your_build_is_accurate for common causes
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I tweaked frame a bit. If the bubble on the level that comes with the smart effector stays within the small black circle is that acceptable. autocalibrate now comes out between .017 and .020.
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I also noted looking at the page for the escher height sensor, the comment about compensating for effector tilt in bed.g which I assume means using the H parameter. Somewhere else was a comment saying the H parameter on g30 was really only useful when deviations were less than 1mm. Mine are less than 1mm so then putting H values on the g30’s in bed.g should correct for any remaining effector tilt?
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Using H parameters on the G30 commands can compensate for the effect of varying effector tilt on the apparent trigger height of a sensor that is offset from the nozzle. However, whatever is causing the effector tilt will also cause other effects that cannot be compensated. So it's best to find the cause of the varying tilt and fix it.
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- list itemThx David. I’ll go after the mechanics again. Related question, on m122 why does it list 5 values for probe points and says bed compensation: none even after auto calibration. The pull down menu on auto calibrate button on dwc has 2 items, disable bed compensation(which does an m561 and thus relates to auto calibration) and a disable mesh compensation. So that control appears to call auto calibration, bed compensation. So I dont understand why m122 would say bed compensation:none even after doing g32?
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@4lathe said in seemecnc max v3.2 with bltouch and bed leveling not working:
Thx David. I’ll go after the mechanics again. Related question, on m122 why does it list 5 values for probe points and says bed compensation: none even after auto calibration.
Because auto calibration is completely different from bed compensation. On a delta, you can use both auto calibration and mesh bed compensation if you want to.
The pull down menu on auto calibrate button on dwc has 2 items, disable bed compensation(which does an m561 and thus relates to auto calibration)...
No it doesn't!
... and a disable mesh compensation. So that control appears to call auto calibration, bed compensation. So I dont understand why m122 would say bed compensation:none even after doing g32?
Those two buttons in theory should do exactly the same thing. Due to a firmware bug they currently do slightly different things, but that will be fixed in the next 2.01beta release.
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I’m running 2.01beta1 and 1.21.2-b2 ans when I press Disable bed compensation the console shows M561 being sent. When I press Disable mesh grid compensation, it issues G29 S2.
I went back to searching for problems like mine where even after g32 followed by g29 I have one side of my print that is overly flattened. I found a comment that you made to daroosh that had him put a piece of paper stock on the bed,do mesh comp and move the head back over that area to check wether mesh comp was in effect. I tried that and sure enough it worked. Then I rotated my effector 120degrees and the problem followed it so it is in the printed effector or the bltouch mount on the effector. I’ve taken it apart checked squareness,etc but no go. Can I fake it out by putting a .20mm piece of paper on the high part ( or maybe the low part) of the bed and run mesh comp, remove the paper and then print? Or is that completely stupid?
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Also using. The bubble level that came with the smart effector, is the bubble staying within the black circle signify that the effector is level”enough” to be corrected in firmware?
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@4lathe said in seemecnc max v3.2 with bltouch and bed leveling not working:
Also using. The bubble level that came with the smart effector, is the bubble staying within the black circle signify that the effector is level”enough” to be corrected in firmware?
The firmware cannot correct for any geometrical error that causes the effector tilt to vary with XY position.
If rotating the effector 120 degrees moved the problem round, then I suspect that either the joint fixings on the effector are not all at the same height, or they don't all have the same spacing.
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The problem is
As an aside the oaper trick doesthat the joint fixings are cnc barbells from seemecnc on a 713maker aluminum effector. I have 3 of them and the same isdue with each one so I’m pretty sure it has something to do with the printed titan aero adapter that attaches to the 713maker effector or the bltouch mount.
As an aside the paper truck does mostly work. I used .1mm paper cut in an arc on the high side of the bed and that eliminated the over squishing on that side. Not sure why just running mesh comp without the paper doesn’t fix it. -
Edit got nessed up but I think the intent is clear. Sorry.
