Re: Precision Piezo Z-probe Now available. October 27, 2017 03:10PM |
Registered: 12 years ago Posts: 1,450 |
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executivul
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You must see the timings and speed of rise, if the ADC can cope with it. I would rather use all analog/simple circuitry for it. Don't trust isolated smart chips (see BLTouch).
Re: Precision Piezo Z-probe Now available. October 27, 2017 09:45PM |
Registered: 6 years ago Posts: 36 |
Re: Precision Piezo Z-probe Now available. October 28, 2017 02:08AM |
Registered: 6 years ago Posts: 30 |
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Moriquendi
Inverting the wires shouldn't have fried anything. The potentiometers are pretty delicate, it's just a function of their size. If you look carefully at the right hand pot you should see a flat side on the twiddly bit, turn that flat side to the bottom. This is the normal setting, it should work for almost everyone. The blue led should normally be off and flash on when triggered.
Idris
Re: Precision Piezo Z-probe Now available. October 28, 2017 04:53AM |
Registered: 8 years ago Posts: 487 |
Re: Precision Piezo Z-probe Now available. October 28, 2017 05:10AM |
Registered: 6 years ago Posts: 30 |
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Moriquendi
Which type of PCB are you using? v1.22 with three inputs or the PP20 PCB with one input on the back?
It's worth measuring the resistance of VR1 (how you do this depends on which board you have). If VR1 is damaged it will read very high resistance (>1M) which will make the circuit oversensitive.
It sounds like you have it set too sensitive, the cure for this is to move VR2 slightly further away from the trigger point. If you can't find a compromise between triggering when the wires are moved and not triggering reliably when probing then you may have to reengineer your mount to produce a better signal.
Idris
Re: Precision Piezo Z-probe Now available. October 28, 2017 05:19AM |
Registered: 8 years ago Posts: 487 |
Re: Precision Piezo Z-probe Now available. October 28, 2017 05:49AM |
Registered: 6 years ago Posts: 30 |
Re: Precision Piezo Z-probe Now available. October 28, 2017 05:55AM |
Registered: 8 years ago Posts: 487 |
Re: Precision Piezo Z-probe Now available. October 28, 2017 05:56AM |
Registered: 6 years ago Posts: 30 |
Re: Precision Piezo Z-probe Now available. October 28, 2017 06:06AM |
Registered: 8 years ago Posts: 3,525 |
Re: Precision Piezo Z-probe Now available. October 28, 2017 06:45AM |
Registered: 6 years ago Posts: 20 |
Re: Precision Piezo Z-probe Now available. October 29, 2017 08:56AM |
Registered: 12 years ago Posts: 1,450 |
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Alexander Mundy
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The one thing I was thinking about with the analog board was multiple comparators instead of the single input. Would be useful for a delta toward the outer edge where one or some of the piezos give180 degree out of phase signals.
Re: Precision Piezo Z-probe Now available. October 29, 2017 09:05AM |
Registered: 12 years ago Posts: 1,450 |
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coredump
Yeah I can't see a solution aside from making my bed travel faster (unsure if it's possible) to have it 'tap' the nozzle. I risk shoving the nozzle hard on the bed and if it decides not to stop I am screwed.
Re: Precision Piezo Z-probe Now available. October 29, 2017 09:49AM |
Registered: 8 years ago Posts: 3,525 |
Re: Precision Piezo Z-probe Now available. October 31, 2017 02:20AM |
Registered: 6 years ago Posts: 30 |
Re: Precision Piezo Z-probe Now available. October 31, 2017 05:40AM |
Registered: 8 years ago Posts: 487 |
Re: Precision Piezo Z-probe Now available. October 31, 2017 07:47AM |
Registered: 10 years ago Posts: 341 |
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coredump
PS: ALSO, I watched the 6 videos about installing and configuring and there is very important information there that isn't on the manual, for example I was totally unaware that the piezo polarity made any difference. Also better information on the measure procedure would be great
Re: Precision Piezo Z-probe Now available. October 31, 2017 07:52AM |
Registered: 8 years ago Posts: 3,525 |
Re: Precision Piezo Z-probe Now available. October 31, 2017 08:15AM |
Registered: 6 years ago Posts: 30 |
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DjDemonD
Polarity is mentioned in the manuals in several places but I will accept perhaps it is not prominent enough and correct that over the next few days.
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Glad you got it working, very few people, if any have been unable to get it going and achieve great results. I think its a system which takes a few days to familiarise yourself with and get a feel for, but I feel worth the time spent to have super accurate first layers, and better bed adhesion.
Re: Precision Piezo Z-probe Now available. October 31, 2017 08:33AM |
Registered: 10 years ago Posts: 341 |
Re: Precision Piezo Z-probe Now available. October 31, 2017 08:50AM |
Registered: 12 years ago Posts: 1,450 |
Re: Precision Piezo Z-probe Now available. October 31, 2017 10:02AM |
Registered: 8 years ago Posts: 3,525 |
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coredump
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DjDemonD
Polarity is mentioned in the manuals in several places but I will accept perhaps it is not prominent enough and correct that over the next few days.
The power connector polarity yes, not the piezo polarity. I think that a mention on the manual that watching the videos will complement the information would be good too.
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Glad you got it working, very few people, if any have been unable to get it going and achieve great results. I think its a system which takes a few days to familiarise yourself with and get a feel for, but I feel worth the time spent to have super accurate first layers, and better bed adhesion.
yeah I haven't done any test print yet, but I used the 3 screws to level my bed and seems to be pretty good.
Also, does this mount qualifies for the bounty? Should I post it there too?
Re: Precision Piezo Z-probe Now available. October 31, 2017 10:36AM |
Registered: 6 years ago Posts: 30 |
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DjDemonD
As for the bounty have a look at the thread [forums.reprap.org] and if you can post a video, the details of where the mount is shared publicly and the accuracy/repeatability results. Then PM me and let me know which kit you want.
Re: Precision Piezo Z-probe Now available. October 31, 2017 10:59AM |
Registered: 8 years ago Posts: 3,525 |
Re: Precision Piezo Z-probe Now available. October 31, 2017 11:41AM |
Registered: 8 years ago Posts: 3,525 |
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coredump
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DjDemonD
As for the bounty have a look at the thread [forums.reprap.org] and if you can post a video, the details of where the mount is shared publicly and the accuracy/repeatability results. Then PM me and let me know which kit you want.
Does the google sheets thing I did count as repeatability since I don't have a marlin for M48? Or there's another method that is available on Duets?
Re: Precision Piezo Z-probe Now available. November 05, 2017 04:32AM |
Registered: 6 years ago Posts: 17 |
Re: Precision Piezo Z-probe Now available. November 05, 2017 06:20AM |
Registered: 8 years ago Posts: 3,525 |
Re: Precision Piezo Z-probe Now available. November 05, 2017 08:27AM |
Registered: 6 years ago Posts: 17 |
Re: Precision Piezo Z-probe Now available. November 05, 2017 09:17AM |
Registered: 9 years ago Posts: 24 |
Re: Precision Piezo Z-probe Now available. November 05, 2017 10:32AM |
Registered: 8 years ago Posts: 3,525 |