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chilipeppr-grbl / widget-grbl-autolevel

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grbl autolevel bit dragging #5

Open Napalm1432 opened 4 years ago

Napalm1432 commented 4 years ago

Hi, I'm trying out the autolevel feature, but there seems to be some issues for me. First off, when probing the points, and moving from one point to the next, instead of lifting the bit befor emoving over, it drags the bit across the surface, then moves up and down again. (ofcourse this is not the behaviour you'd want since it is scratching the surface) Also the measurements seem way off, it gives me back a distance of over 2mm, and even had a time when it reported a difference of over 20mm, not sure if this is a problem on the grbl end or chillipeppr.

Here's a video of the bit dragging across the surface: https://youtu.be/SFvvRBtcpKQ

chilipeppr commented 4 years ago

What does your console output? It seems to me that your Z zero is off. Is it possible you're in inches mode while the probing is in mm and that's throwing things off?

Napalm1432 commented 4 years ago

I've manually set it to mm using G21, and reset the zero position, it's still dragging along (edit: when zeroing Z perfectly to the plate, and having the probing feedrate at 2mm/s did help make the measurements accurate, and for the first 3 hops the Z went up instead of draggin, but after the first three it drags again(even though measurements are coming in correctly)) console output: ok ok ok [PRB:-11.000,-8.000,-0.490:1] ok G0 Z1.5 G0 X0 Y10 G0 Z0.5 G38.2 Z-1.5 F10 error: Expected command letter ok ok [PRB:-11.000,-3.000,-0.460:1] ok G0 Z1.5 G0 X0 Y15 G0 Z0.5 G38.2 Z-1.5 F10 error: Expected command letter ok ok [PRB:-11.000,2.000,-0.440:1] ok