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Questions tagged [z-probe]

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

3
votes
1answer
56 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
votes
2answers
61 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
votes
1answer
370 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
votes
1answer
476 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
votes
1answer
30 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
vote
1answer
433 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
vote
1answer
191 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
vote
1answer
1k 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 ...
5
votes
2answers
2k 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
votes
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
votes
3answers
2k 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&...
8
votes
1answer
739 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
votes
1answer
214 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
votes
1answer
348 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
votes
1answer
718 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
votes
1answer
687 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
votes
1answer
613 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 ...
4
votes
1answer
716 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
vote
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
votes
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
votes
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 ...
9
votes
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
votes
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
votes
3answers
875 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
votes
1answer
11k 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+) ...