3D Printing Stack Exchange
3D Printing Stack Exchange

Questions tagged [z-probe]

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

A Z-probe is a mechanical (contact), electronic (capacitive, inductive or piezo), acoustic or optical sensor that is used to level the (heated) build plate. Usually the less expensive 3D printers are equipped with a simple mechanical switch to level the bed. More advanced sensors can be used to automatically level the bed. The choice of sensor depends on the choice of the (heated) build platform.

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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 in Marlin firmware? E.g. the Marlin (1.1.x)…
0scar
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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+) autoleveling feature works by pushing the nozzle into the…
Nir
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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. I've set -0.4 in Marlin firmware 1.0.2-1 stable…
MOTIVECODEX
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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 a few other spare parts. Now, as I read up on these things…
Trish
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Using auto-bed leveling, do I need to initiate G29 before every print?

Various methods to scan the top surface exist to improve the bed adhesion to prevent prints to come loose from the bed during printing: e.g. BLTouch and clones or inductive and capacitive sensors/probes. In order, for the print head, to use this…
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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 for 0.1mm layers. After this realization comes…
mhelvens
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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 -2.97. As -2.97 is just a little bit too far from…
Rosalie W
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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 changing that?
Tanner D
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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 heated bed, so I must use Marlin's Home Offset…
Ian Mackinnon
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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 and which pin to activate for the servo? How to test…
FeliceM
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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 months ago and up until about 4 weeks ago, it worked…
dusodesign
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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-lengths, not bed-leveling, but I think it amounts…
SusanW
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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 yet, Z does not lift during probings) probing 4…
FeliceM
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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 bed before the z-axis goes down for the second…
David Souza
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3DTouch triggers way too close

Today I finished building and adjusting a Prusa-Clone printer. The brain is a 32-bit board with Smoothieware on in. To run the auto bed leveling routine I installed a 3DTouch (BLTouch clone, sorry low on cash). After many headaches, I got everything…
Felix Hauser
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