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Thread: BL Touch and Makerfarm.
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02-22-2017, 06:06 AM #41
- Join Date
- Jul 2016
- Location
- Pennsylvania, USA
- Posts
- 255
Hi
More or less on the BL Touch, you need to:
1) Remove the Z limit switch
2) Verify that the BL Touch fires up (light blinks) and works (light switches on when probe is pushed).
3) Design a mount that puts the switch point (not the tip) of the BL below the hot end tip *and* that puts the tip when stowed above the height of the hot end tip.
4) Measure the offsets of the probe tip (X,Y,Z) to the hot end tip. Enter them in the firmware.
5) Turn on bed leveling in Marlin. How you do that varies a lot depending on which release you have.
6) Verify the X,Y,Z offsets and correct the sign errors you may have made
7) Run a bed level and see if the Z crashes (or not), modify the Z offset in firmware to get it close.
8) Step and repeat 7 until you have it close (0.2 mm is very close, 2 mm is not close at all)
Since there are several versions of bed leveling and many releases of Marlin running around, any deep dive into my setup may actually be totally wrong for your setup. On a MakerFarm, reading through Colin's firmware is the best example you have.
Bob
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02-22-2017, 05:36 PM #42
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02-22-2017, 08:42 PM #43
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- Jul 2014
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- 305
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02-23-2017, 08:34 AM #44
I do not know where you purchased your BL-Touch. If you got it from Makerfarm, that reduces my concern about it being a counterfeit probe. But Antclabs (the maker of the real BL-Touch probe) is only selling the probe on eBay. They have not set up much of a distribution network. It is very possible MakerFarm thinks they are distributing a legitimate BL-Touch probe but they are not. This is a real BL-Touch probe: http://www.ebay.com/itm/BLTouch-Auto...4AAOSw9IpXxne9
What I can tell you with certainty is that most of the questions and problems we are seeing with 'BL-Touch' probes are clones and not real BL-Touch probes. Can you post a picture of the probe. And it might not hurt for you to send an email to Antclabs and ask if MakerFarm is an 'Authorized Distributor' of their probe. That would put the question to bed one way or the other.Last edited by Roxy; 02-23-2017 at 02:49 PM.
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02-23-2017, 07:05 PM #45
- Join Date
- Jul 2014
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- 305
If you visit their website:
http://www.antclabs.com/store
You can see Makerfarm is an authorized reseller.
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02-23-2017, 08:21 PM #46
Thank you for that information! That is very helpful to know about!
And... The latest RC-8 RCBugFix has a number of new items to help BL-Touch users.
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03-18-2017, 11:20 PM #47
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- Jul 2014
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- 305
Anyone want to give me a hand?
I have the BL Touch installed and responding. A G28 command homes X and Y and then Z. However, after it probes the Z axis twice it raises the Z axis a few mm. Is this normal?
I am following the Z-Offset guide: https://www.youtube.com/watch?v=OoWP5C8lSig
When I get to the point of off setting the Z using G92, I can only move the Z axis so much before it stops moving. This leaves the nozzle about 3-4 mm above the bed.
What am I missing?
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03-21-2017, 01:56 PM #48
- Join Date
- Mar 2015
- Posts
- 2
Sounds like you dont have the setting in the firmware that allowes the z axis going into negative position. I havent done BLTouch yet but with a regular probe, you do G28, then G29. move z until it hits the bed, record the z position and Add that to your z offset.
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03-21-2017, 06:57 PM #49
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- Jul 2014
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- 305
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03-22-2017, 01:12 PM #50
- Join Date
- Mar 2015
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- 2
Ender 3v2 poor printing quality
10-28-2024, 09:08 AM in Tips, Tricks and Tech Help