Questions tagged [z-probe]

Use this tag for question that relate to switches or probes to level the bed either manually or automatically

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2answers
97 views

Can I use a 12 V single channel optocoupler module in a 24 V machine?

I have a Tevo Tornado Gold 24 V. I want to use this LJ12 A3-4-Z/BX Inductive NPN NO 4 mm with 6-36 V operation current as a Z probe. I do not want to fry my machine by putting in 24&...
2
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1answer
25 views

Is a BLTouch probe used during a print after the first layer?

I was looking at a BLTouch probe, and saw the recent question about one with intermittent failure. That was kind of scary, where I might spend a bunch of money for something that would make my printer ...
3
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3answers
89 views

Wiring Z-stop directly to hot end and aluminum bed / spacers

So I am really fed up with inductive probes. The one I am using keeps getting shifted slightly every time I switch nozzles or run an oozy print. That means I have to autolevel again, then manually set ...
1
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0answers
81 views

Marlin Bed-Leveling Vs Skew Correction

I've added a G29 command in my starting script to do bed leveling process before every print. It works fine and compensates my bed during prints. But when I print larger models, they're all skewed in ...
3
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1answer
312 views

Specifying Z offset in Marlin firmware

I need to set a Z offset for the Flying bear P902. I calculated the offset (-2.98). But, every time when I try to input this using the LCD screen of my 3D printer, the value jumps to either -2.99 or -...
3
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2answers
220 views

How to connect optocoupler module to ABL sensor and Ender 3 board

I am trying to figure out how to wire up Auto Bed Leveling (ABL) on my Ender 3 using the optocoupler and inductive proximity sensor below. I cannot figure out how to wire it all together, all the ...
4
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1answer
1k views

How to increase the amount of probing points for a BLTouch sensor in Marlin firmware?

I have a new BLTouch that is setup (using Marlin 1.8.7) but I want to increase the probing grid from a 3x3 to something like a 5x5. I am using bilinear leveling with a 3x3 grid. How would I go about ...
3
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1answer
774 views

The BLTouch is hitting the bed on the double-probing

When double-probing, sometimes the BLTouch will hit the bed before the z-axis goes down: The BLTouch deploys The bed goes up The sensor triggers The BLTouch stows The BLTouch deploys and crashes the ...
2
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1answer
41 views

M12 vs M18 V5 inductive probe

I currently have my printrbot with a LJ12A3-4-Z/BX-5V Inductive Proximity Sensor ( 61mm M12 DC 5V NPN NO 300mA) That detects my aluminium bed at around 1.2 mm distance. While it works, if the ...
1
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1answer
1k views

How to set Z-probe boundary limits in firmware when using automatic bed leveling?

In setting up a probe for automatic bed leveling, the limits of the probing area must be entered in the firmware of a 3D printer. When using a sensor, how do you define the bed limits for the sensor ...
1
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1answer
254 views

Why does my DIY printer start printing in air?

I've built a DIY 3D printer similar to Prusa i3. It does homing and bed leveling very well with a PNP Lj12a3_4_Z_BY sensor using G28 and ...
1
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1answer
2k views

3DTouch sensor fails after probe deployment and triggering

I'm using a 3DTouch sensor (from Geeetech) on a self-build CoreXY printer (HyperCube Evolution). The sensor worked perfectly until not being used for a month. The symptoms are that it fails to deploy ...
6
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3answers
3k views

Inductive Sensor in 24 V machine?

I am getting a 24 V based Ender 3. From the factory, it has an aluminium bed. So I also put this LJ12 A3-4-Z/BX Inductive NPN NO 4 mm with 6-36 V operation current into the box together with ...
5
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1answer
2k views

Problem with print bed height on Creality Ender 4

I am a novice to 3D printing and have encountered an issue that I cannot seem to solve. Hopefully someone here can point me in the right direction. I have a Creality Ender 4 that I purchased a few ...
3
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3answers
3k views

Which proximity sensor to use?

I am building a dolly and I am confused as to which proximity sensor to use. Should I go for M8 or M12 and 5 V or 6-36 V? What should be the best detecting distance? Should it be 2/4/8&...
7
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1answer
788 views

Marlin's bed leveling Mesh Validation Pattern ignoring home offset

I'm using a Prusa clone with Ramps 1.4, Marlin 1.1.5 and an inductive proximity sensor Z-probe. Due to the design of the printer, the X and Y end-stops and the Z-probe are not exactly aligned with the ...
3
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1answer
275 views

3Dtouch triggers way too close

Today I finished building and adjusting a Prusa-Clone printer. The brain is a 32bit board with Smoothieware on in. To run the auto bed leveling routine I installed a 3DTouch (BLTouch clone, sorry low ...
2
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1answer
362 views

MKS Sbase Probing

So I have an MKS Sbase v1.3 that I am trying to use in a delta printer. I am trying to use a PNP inductive sensor with it and it doesn't work. I have tried using a voltage divider with it already (10k ...
2
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1answer
748 views

Auto bed leveling with BL Touch sensor crashing to bed

I'm new to 3d printing and I recently bought a Geeetech Prusa i3 Pro B along with a BL Touch (3D touch) sensor to do auto bed leveling. I printed the sensor holder, mounted it and the sensor to the ...
3
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1answer
708 views

Unable to install auto-bed levelling sensor into my Anet A8

I've been trying to install an inductive sensor for auto-bed levelling into my Anet A8 and I'm having a few issues. I have been using the wiring diagram provided by Solid Ground Electronics in one ...
2
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1answer
692 views

XYZ calibration without PINDA probe

I have been happily printing with my Original Prusa i3 MK2S for a few weeks now. I have been thinking about replacing the PINDA probe with a BLTouch tactile sensor. If I do so, how will I be able to ...
3
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2answers
820 views

What does Marlin's G30 code do?

I'm using Marlin 1.1.0RC8 to control an MPCNC, using a RAMPS1.4. We've just added a touch-plate to do Z-probing, which works nicely for a single probe (I just want calibrated height for variant bit-...
1
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1answer
1k views

Marlin: possible to set ZMin limit when ZProbing?

Question: Can a "ZMin-while-probing" be set? Meaning a minimum Z height the printer bed can move to, while Z Probing. Purpose: For safety reasons should the probe switch not fire for some reason. -...
4
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2answers
2k views

Autobed leveling doesn't compensate

I finally manage to setup the ABL on my Prusa. I run G28 to home all axes (for z I use the same probe used for ABL). Then I run G29 E ( I use E because otherwise for some reason I have not understood ...
6
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2answers
3k views

Auto bed levelling with Rumba board - Servo not deploying

Has anyone succeeded in installing the auto bed levelling on a Rumba board with Marlin firmware? I have the last stable version 1.1.0 RC6. I would appreciate some direction especially about: How ...
8
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1answer
5k views

Z offset incorrect

Repetier host 1.6.2. Used Slic3r and CuraEngine in RH1.6.2 to slice my prints. OK, I've a problem.. Z offset does not work.. Well.. Flashed EEPROM clear. Enabled EEPROM and CHIT CHAT within firmware....
4
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2answers
3k views

Bed leveling method not working with Repetier firmware 0.92.9?

I homebuilt a delta 3D printer (like Kossel mini) with a Z probe near the hotend with manual deploy and RAMPS 1.4 board: I configured the Repetier firmware with the online tool; All my endstops (...
8
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3answers
943 views

Do I need to recalibrate z-probe offset every time I switch to a different layer height?

It occurs to me that I'm never really thinking about layer height when I calibrate my z-probe offset. This is obviously an oversight, because I'll want my nozzle to start higher for 0.3mm layers than ...
12
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1answer
12k views

How to configure Cura to run the Z probe before heating

I'm using Cura as my slicing/printing software and I just started using the BuildTak printing surface. The BuildTak is damaged by pushing a hot nozzle into it and my printer's (Robo3D R1+) ...