Re: Precision Piezo Z-probe Now available. January 11, 2018 02:20PM |
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Re: Precision Piezo Z-probe Now available. January 11, 2018 03:13PM |
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Re: Precision Piezo Z-probe Now available. January 12, 2018 06:55AM |
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Re: Precision Piezo Z-probe Now available. January 12, 2018 06:22PM |
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Re: Precision Piezo Z-probe Now available. January 12, 2018 06:37PM |
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Re: Precision Piezo Z-probe Now available. January 13, 2018 02:16PM |
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Re: Precision Piezo Z-probe Now available. January 13, 2018 05:11PM |
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Re: Precision Piezo Z-probe Now available. January 13, 2018 05:47PM |
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Re: Precision Piezo Z-probe Now available. January 14, 2018 07:52AM |
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Re: Precision Piezo Z-probe Now available. January 14, 2018 08:18AM |
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Re: Precision Piezo Z-probe Now available. January 14, 2018 08:40AM |
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Quote
DjDemonD
Do you have any figures for how well it performs? 30 probes with a range and std deviation is our standard test.
Re: Precision Piezo Z-probe Now available. January 14, 2018 09:29AM |
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Re: Precision Piezo Z-probe Now available. January 14, 2018 11:58AM |
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Re: Precision Piezo Z-probe Now available. January 14, 2018 12:08PM |
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Re: Precision Piezo Z-probe Now available. January 14, 2018 12:12PM |
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Re: Precision Piezo Z-probe Now available. January 14, 2018 12:14PM |
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Re: Precision Piezo Z-probe Now available. January 14, 2018 12:37PM |
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Re: Precision Piezo Z-probe Now available. January 15, 2018 06:46AM |
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#define Z_PROBE_OFFSET_FROM_EXTRUDER 0.2
Re: Precision Piezo Z-probe Now available. January 15, 2018 07:25AM |
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Re: Precision Piezo Z-probe Now available. January 15, 2018 08:20AM |
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Quote
Ismangil
Now I've got Precision Piezo working, I want to understand better the relationship between firmware Z=0, physical nozzle position, Z_PROBE_OFFSET_FROM_EXTRUDER, and any slicer G-code offsets.
Currently I follow your configuration with
#define Z_PROBE_OFFSET_FROM_EXTRUDER 0.2
Once I home Z, if I go to Z=0, it's very tight physically, there is high resistance to a 0.05mm feeler gauge.
So what is the offset from extruder doing exactly?
Is it OK to have nozzle so close? It seems when it was manual we're told to have paper-thin gap, I think that's about 0.1mm or more actually.
Thanks!
Re: Precision Piezo Z-probe Now available. January 16, 2018 05:02AM |
Registered: 9 years ago Posts: 17 |
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whosrdaddy
0.2 sounds a bit much, this means that your probe triggers at -0.02 mm (0.02 mm under the bed surface),
0.10mm - 0.16mm are more common ranges for the probe.
My probe setup is so sensitive that it triggers at -0.07 mm (which makes it 0.07 for M851)
So in your case if you put 0.15 Z_PROBE_OFFSET_FROM_EXTRUDER, your feeler gauge will measure 0.1 mm (0.2-0.05), understand?
Re: Precision Piezo Z-probe Now available. January 18, 2018 09:59AM |
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Re: Precision Piezo Z-probe Now available. January 18, 2018 10:30AM |
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Quote
DjDemonD
I would think so I set my software endstop (also called travel limits) to z-1.0 mm so I can push the nozzle down below the bed in testing. If you define the probe offset in configuration.h you need to use a negative number I. E. -0.1 as the probe triggers below the bed, at the point where the nozzle contact has deformed the disc enough for a trigger. The opposite of an inductive probe which triggers above the bed.
It might be - 0.2 or - 0.05 on your setup changing this value is one way to adjust it. However it's easier on marlin to use m851 as it can be set before a print and then m500 to save. M851 offsets the nozzle by a fixed amount.
Re: Precision Piezo Z-probe Now available. January 18, 2018 10:36AM |
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Re: Precision Piezo Z-probe Now available. January 24, 2018 08:09AM |
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Quote
RKS7204
Drilled a lot of holes, cut of the edges, printed the 2 pieces ....
[attachment 101532 IMG_20180102_201221070.png]
Re: Precision Piezo Z-probe Now available. January 24, 2018 08:37AM |
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Re: Precision Piezo Z-probe Now available. January 24, 2018 09:07AM |
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Re: Precision Piezo Z-probe Now available. January 24, 2018 09:56AM |
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Re: Precision Piezo Z-probe Now available. January 24, 2018 10:24AM |
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Re: Precision Piezo Z-probe Now available. January 24, 2018 11:05AM |
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