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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

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What do I need to configure to get Marlin to run an Ender 3 Pro with CR Touch?

I have an Ender 3 Pro, board version 4.2.2, and a CR Touch with 5 pin connector. I also removed the z-axis endstop connector at the endstop. I've been building and flashing Marlin 2.1.2.2, but I haven'...
ttshaw1's user avatar
  • 31
-1 votes
1 answer
39 views

Nozzle Z-level is not aligned with Z-probe

With my Ender 3 S1 the bed leveling z-probe level and the nozzle Z-level are not alligned. The nozzle is 0.77 mm higher than the bed leveling probe. I think this causes some problems I have: When ...
Chris's user avatar
  • 11
2 votes
0 answers
40 views

Can Cura apply multiple Z-offsets across the bed to "flatten" the print area?

We have a Tronxy X5SA 400 Pro which uses a TR sensor to "auto-level" the printing bed. It samples 16 positions across the bed (4 x 4) and provides a +/- level from its initial measurement. ...
KJ7LNW's user avatar
  • 121
3 votes
1 answer
181 views

How can microswitch-based automatic bed leveling probes be possibly reliable and accurate?

I just discovered automatic bed leveling (ABL) probes that only use a microswitch. For example, the FreeABL as shown below: Source: Thingiverse.com Or, the magnet mounted KlackEnder as shown below: ...
Bob Ortiz's user avatar
  • 1,123
1 vote
0 answers
133 views

Does Marlin already have a way to define auto Z-offset strain gauge?

My Ender 3 v3 SE printer is still really new so I understand the info is limited. I'm trying to build a version of the latest Marlin FW that will work I've already redefined the pins that are ...
T3K's user avatar
  • 11
0 votes
1 answer
63 views

Why is the Z probe offset easily adjustable in the printer UI, but not the X/Y probe offset?

I should mention that this is my experience with Marlin. I can adjust the Z offset all I want in the UI, but not the X/Y offset. If you reinstall the probe, I've heard you may need to adjust the Z ...
Octanum's user avatar
  • 15
0 votes
0 answers
1k views

Ender 3 S1 Pro Probe Failed when auto-levelling even after manual level

When I first bought the Ender 3 S1 Pro, everything worked fine, but at some point, the auto-leveling stopped working. I used to manually level it every dozen or so prints (sheet of paper method) just ...
William Byrd's user avatar
1 vote
1 answer
66 views

How does my printer auto level based off the sensor I installed?

I'll start off with some info in case it's needed, but my questions are a bit lower. I have an Ender 3 Pro with the 4.2.2 motherboard. Grabbed a Marlin firmware bin from Shiny Upgrades and seems to ...
Octanum's user avatar
  • 15
0 votes
0 answers
107 views

Problems with BLTouch on Ender 3 Pro

I have had some issues with my Ender 3 Pro (v4.2.2 motherboard). The BLTouch decided to just probe the air. It had been working quite fine until one day when it stopped. IDK if this helps, but I have ...
Charlie Nicholson's user avatar
4 votes
2 answers
7k views

Auto Bed Leveling does not compensate for bed tilt correctly (Anycubic Kobra Neo)

Setup: Anycubic Kobra Neo (Firmware v1.3.3), Cura 5.2.1 I recently bought an Anycubic Kobra Neo. It works but has issues with auto bed leveling. Specifically, auto bed leveling does not compensate for ...
thebear8's user avatar
  • 141
2 votes
1 answer
253 views

Z-Offset Multiple Heads on Tool Change

I have created my own tool changer for my 3D Printer but I'm having an issue with the Z-offset for each head. Firmware: Marlin 2.1 Slicer: Cura I have used the offset wizard to get the Z-offset of ...
Rickstar's user avatar
  • 123
1 vote
1 answer
1k views

When Z-axis is autohoming the print head moves too far to the right and starts grinding

Installing BLTouch on Ender 3 with SKR Mini E3 v2 motherboard, flash the firmware and do the first autohome, X and Y-axis autohome to the endstops just fine, but then the print head moves to the ...
Drethapid's user avatar
2 votes
0 answers
2k views

BLTouch homing correct, but nozzle hits bed during print

So I have this exact problem as in this thread: BLTouch calibrated, nozzle still dives into the bed But I don't see a clear solution to that question, or I don't understand. After correct calibration ...
user35400's user avatar
0 votes
1 answer
1k views

Tronxy X5SA not working properly after Marlin firmware installation

Yesterday I installed Marlin firmware, 2.0.x bugfix version on my Tronxy X5SA (v6). I did it in the way explained on GitHub, with Visual Studio Code, Platform IO, Marlin auto build. I applied the ...
Julo0sS's user avatar
  • 121
2 votes
0 answers
761 views

Z homing problem; starts printing in the air

I have a DIY 3D printer with Marlin firmware. I use an LJ12A3-4-Z/BY sensor for the Z probe. Recently I have had a ridiculous problem with Z homing. In doing Z homing, it senses the bed, goes up, and ...
2012User's user avatar
  • 579
2 votes
1 answer
3k views

BLTouch clone will not deploy, stow, or deploy when homing or auto leveling

I have 2 printers, an Artillery Sidewinder X1 and an Ender 3 that both have BLTouch sensors installed. This post is about the one (BLTouch clone, the probe is a Smart v3.1 sensor) installed on my ...
Artichoke's user avatar
  • 189
2 votes
5 answers
2k views

BLTouch type sensor Z not compensating

I have a BLTouch clone (3DTouch) on my printer (Artillery Sidewinder X1). I installed it on the printer ages ago and has been working fine since. Recently, I did a BTT smart filament sensor upgrade. I ...
Artichoke's user avatar
  • 189
1 vote
1 answer
1k views

BLTouch not covering the whole bed area

My problem is that the BLtouch doesn't probe the whole bed, in which the probe starts from the left edge and stops at the middle of the bed. I'm using Marlin 2 software and this the code in the ...
Rayan's user avatar
  • 89
2 votes
2 answers
2k views

First layer Z-offset in G-code

In slicer G-code is it possible to set the probe Z offset for the first layer only? For my stock E3 plate I find -4.125 mm best however for glass I need to go to -4.175 mm for the first layer to get ...
Sterling Duchess's user avatar
10 votes
1 answer
51k views

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/...
0scar's user avatar
  • 36.1k
3 votes
0 answers
175 views

Should center point of G29 matrix always be zero?

Questions: Should repeated applications of G29 (auto-level) result in the same matrix as long as nothing is loose or has otherwise mechanically changed? Should ...
satellite1217's user avatar
1 vote
1 answer
587 views

Replacement Z Probe for MP10

Has anyone successfully replaced the inductive Z probe on the Monoprice MP10 (Mini or regular) with a different type, such as BLTouch or IR? I find that the stock inductive probe isn't so accurate, ...
Shlomo Zalman Heigh's user avatar
0 votes
1 answer
483 views

Marlin Z-probe Failure!

I'm using Marlin. Recently my Z-probing randomly doesn't work. Sometimes during Z-Homing it goes up instead of going down to sense the Bed! In Bed Leveling it goes higher and higher every time. It ...
2012User's user avatar
  • 579
5 votes
2 answers
7k views

Z-offset: 0.2 mm, 0.1 mm or the thickness of paper?

So, I'm pretty new to 3D Printing, and to quote Spock from Wrath of Khan I would say "He is intelligent, but not experienced". Now everything I have been reading about Z-offset seems to talk ...
Byte Insight's user avatar
2 votes
1 answer
180 views

X axis doesn't lift after levelling

So, I recently installed an inductive sensor to my 3D printer for auto bed levelling and now I'm stuck on Z probe offset as it doesn't seem to do much apart from changing number is given on display ...
Potato Lord's user avatar
2 votes
1 answer
4k views

Bed probing feed rates

I was watching a friend's Prusa run the bed-probe routine and I realized how pathetically slow mine is and takes forever. I want to speed it up. What parameters in Marlin's ...
Jeff's user avatar
  • 21
1 vote
1 answer
486 views

Increase Z-homing probe number

I'm using latest stable Marlin 1.1.9.1 with BLTouch. The BLTouch seems a bit damaged so I want to increase its accuracy with multiple measurements. I've increased ...
Dmitriy's user avatar
  • 13
0 votes
1 answer
197 views

Severe regression in print quality after adding Z probe

I installed a BLTouch on my printer (Wanhao Duplicator i3) with Marlin 2.0.5.3 and enabled AUTO_BED_LEVELING_BILINEAR. However, the results are disastrous when I ...
rgov's user avatar
  • 363
1 vote
2 answers
12k views

Marlin NOZZLE_TO_PROBE_OFFSET with glass

In my custom printer I have probe and nozzle at same height and configured Marlin this way: #define NOZZLE_TO_PROBE_OFFSET { 43, -20, 0 } On the bed I've a 2&...
danyolgiax's user avatar
0 votes
1 answer
1k views

Marlin bed autoleveling confusion

I've just added a Z-Probe sensor to my custom printer (Arduino - RAMPS 1.4 - Marlin 2 ...
danyolgiax's user avatar
1 vote
2 answers
577 views

Anet A8 Z-Probe Bed Positioning going outside of bounds

I have an Anet A8 with the Anet 1.7 board, Skynet3d v2.3.2, and the stock sensor. I originally had this configuration with the stock extruder, but recently purchased an E3D v6 clone with a Bowden ...
capnjck's user avatar
  • 13
4 votes
2 answers
2k views

G28 ignoring Z-Probe X/Y Offsets

I recently installed a SKR 1.3 Board with a 3DTouch-Probe on my Creality Ender 3 Pro. The probe works, G29 does its magic, but: If i issue a plain ...
Odious's user avatar
  • 41
1 vote
2 answers
655 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&...
3d Printer's user avatar
3 votes
1 answer
544 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 ...
Joel Coehoorn's user avatar
2 votes
3 answers
797 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 ...
K Mmmm's user avatar
  • 1,712
0 votes
0 answers
1k 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 ...
2012User's user avatar
  • 579
9 votes
1 answer
39k 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 -...
Rosalie W's user avatar
  • 453
3 votes
2 answers
3k 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 ...
Moltra's user avatar
  • 31
9 votes
1 answer
53k 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 ...
Tanner D's user avatar
4 votes
4 answers
4k 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 ...
David Souza's user avatar
2 votes
1 answer
200 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 ...
rufo's user avatar
  • 269
21 votes
1 answer
62k 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 ...
0scar's user avatar
  • 36.1k
2 votes
1 answer
641 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 ...
2012User's user avatar
  • 579
1 vote
1 answer
9k 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 ...
0scar's user avatar
  • 36.1k
9 votes
3 answers
10k 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 ...
Trish's user avatar
  • 22.1k
4 votes
1 answer
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 ...
dusodesign's user avatar
3 votes
3 answers
6k 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&...
Jose Ben's user avatar
  • 165
7 votes
1 answer
2k 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 ...
Ian Mackinnon's user avatar
4 votes
1 answer
2k views

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 ...
Felix Hauser's user avatar
2 votes
1 answer
519 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 ...
Kiro's user avatar
  • 411