Piezo Z-probe Mk III Beta version now available

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By dc42 16 February 2017 11:54

Administrator · 1,867 comments

You can adjust the debounce time by adjusting the threshold in the G31 P parameter. Lower values give lower debounce times.


Duet WiFi hardware designer and firmware engineer
http://www.escher3d.com
https://miscsolutions.wordpress.com

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By Moriquendi 16 February 2017 21:44

Member · 26 comments

New boards have arrived and are made up, I'm currently testing them and they should be ready to post early next week.

Of the the first batch of 12 I've sent out 10 and donated I think £55 to the charity. Unfortunately I'm not in a position to keep doing that, I had to buy more parts to make the new batch and the boards are larger and more expensive so now I'm going to be selling them. If you've already been told that the money is going to the charity then that is where it will go but in the interests of transparency, from this point on, the money is going in my pocket.

I will be writing up documentation (hopefully this weekend) and I will publish that free for anyone to use.

I didn't foresee the demand for these boards so I only ordered six this time, I think three or four are already spoken for. I'll be ordering more asap.

I've previously discussed a piezo endstop handling board, they are also made up and being tested and will be ready to post next week to beta testers.

Idris

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By DjDemonD 16 February 2017 21:57

Member · 319 comments

Idris. That's great news. I think it might be a good idea to possibly start a wiki page on reprap for this system as it is coming together nicely, and all the relevant information such as how to use the board and how to assemble the units would be well placed.

David - I will experiment with this. I have been setting the P parameter dependant on the analogue value but it might be worth revisiting the digital setup as it does seem to work extremely well on smoothie as a digital sensor with 1ms debounce.

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By DjDemonD 16 February 2017 23:18

Member · 319 comments

Okay so this is the current incarnation of the sensor mounted in Lykle's latest effector system (which will be able to have a Nimble extruder bolted straight on - or just used with your current Bowden/flying extruder):
IMG_20170216_231632.jpg

Nozzle wobbly practically non-existent and calibrating to a 0.02 precision over a 330mm bed.

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By DjDemonD 17 February 2017 08:38

Member · 319 comments

I have the stl's for this effector now on my thingiverse. Lykle will publish it also (with step files) if anyone needs to edit it to suit their setup. Please feedback to us on how you are getting on with it, any additions and improvement you make as well.

http://www.thingiverse.com/thing:2069480

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By Dougal1957 17 February 2017 08:43

Member · 218 comments

DJ did you get his larger one I sent you you will need that to go with the Alloy carriages that I am getting cut it has a hole to take the Bardair cooling tube integrated into it (Reminder to self to order a bardAir system)

Doug

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By DjDemonD 17 February 2017 12:16

Member · 319 comments

Thanks Doug, I did get it yet. I will reprint and upgrade the effector when the carriages are in. I am looking forward to that.

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By DjDemonD 18 February 2017 13:21

Member · 319 comments

This seems to be a nice way to use the probe for automatic perfect first layers:
https://www.duet3d.com/forum/thread.php?id=940

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By Zesty_Lykle 18 February 2017 14:10

Member · 84 comments

Yes, DJDemonD did a great job there, getting it done.

I published the designs on our Thingiverse page as well. http://www.thingiverse.com/thing:2117069
Included is a 64mm wide effector and a Prism effector, which is the standard Kossel type width, but pretty looking. (I think)

All three effectors already have holes in them for a Bard-air type cooling pipe.


Lykle
Design, make and enjoy life

Co Creator of the Zesty Nimble

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By Moriquendi Yesterday 12:40

Member · 26 comments

I'm writing up documentation for these new boards, does anyone know whether the inputs of the Duet are 5V tolerant?

Idris

Edit: Tuning instructions for the Z-probe v2 board are here https://www.dropbox.com/sh/3q38ew98kt7f … jm2Ra?dl=0, feedback would be very welcome, particularly from anyone whose using a v1 board.

Last edited by Moriquendi (Yesterday 13:17)

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By dc42 Yesterday 13:57

Administrator · 1,867 comments

Although they are fairly tolerant of over-voltage, the Duet inputs should not be fed more than 3.3V under normal operating conditions. If you power your interface board from the 3.3V supply provided on the Z probe connector, all will be well.


Duet WiFi hardware designer and firmware engineer
http://www.escher3d.com
https://miscsolutions.wordpress.com

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By Moriquendi Yesterday 16:05

Member · 26 comments

I thought that would be the case. The reason I ask is that I'm using a Smoothieboard which uses 5v IO. The board specifies 5v power so I'd hate for someone to give it 5v then plug it into the Duet and fry something. I don't have a 3.3v powersupply so I can't test the boards on 3.3v, nobody reported any problems with the v1 at 3.3v.

Idris

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By DjDemonD Yesterday 19:52

Member · 319 comments

Moriquendi, I'm using your one-Piezo board at 3.3v on duetwifi with no issue.