Questions tagged [bltouch]

For questions about the BLTouch automatic leveling sensor for 3D Printers.

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8
votes
6answers
21k views

BLTouch Probing Fails Intermittently

I just installed my (v3) BLTouch with a vanilla version of Marlin (1.1.9) on my Ender 3 and everything seems to work fine (including auto home) except the probing. It repeatedly does the first three ...
7
votes
1answer
27k 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 ...
6
votes
2answers
17k views

Configuring BLTouch with Marlin firmware

Has anyone configured BLTouch with Marlin firmware? I could only find videos about older firmware version. I followed this document. To avoid causing any damage to the printer, I removed all ...
5
votes
1answer
137 views

Automatic Bed Leveling (ABL) with a sensor (BLTouch, inductive, capacitive), how does it work?

A frequently discussed update to a 3D printer is the so-called leveling sensor; this sensor can be inductive, capacitive, optical or mechanical (i.e pressure or physically touching, like a BLTouch). ...
5
votes
4answers
2k views

What are the pros and cons of using a BLTouch in place of a limit switch?

This is about practicality. I'm hearing that people are using their BLTouch not to adjust the Z offset, but as the limit switch for the machine! Why is this so? What are the pros and cons of using a ...
5
votes
0answers
35 views

BLTouch not probing all points and motors making really loud noises since rebuild of latest Marlin (new hot end installed and BLTouch)

Please listen to this video, which illustrates the issue, with the sound on. Link to configuration.h and configuration_adv.h ...
4
votes
1answer
37k views

How to set the boundaries for BLTouch probing

I have just installed the BLTouch on my Ender 3 running Marlin 1.1.9 and I want to set it up so the probing does the 9 points in a perimeter that uses most of the bed surface area. At the moment the ...
4
votes
1answer
6k views

BLTouch not leveling

I installed a BLTouch V3.1 on my Ender 3 which is using Marlin (bugfix 2.0.x) off a Skr mini e3 v2.0. I updated the firmware using a teaching tech video. I'm having trouble when using bed leveling. It ...
4
votes
2answers
12k views

G29 Auto Grid Leveling Doesn't Do Anything

I have an Ender 3 Pro, recently added a BLTouch v3, flashed a bootloader, and I'm now attempting to configure TH3D U1.R2.15 firmware. I have only modified configuration.h, haven't touched any other ...
4
votes
1answer
143 views

Creality Ender 3 Pro - Z travel issue with TH3D firmware

TLDR - I’ve just driven myself insane trying to fix what I thought was a physical problem with my Z-axis, but it seems to have been solved by switching from the TH3D firmware to the Creality firmware. ...
4
votes
2answers
58 views

BLTouch always shows high on right side of the plate

My BLTouch was working great. Until one day, it just started showing the right side as being high on every read. I've tried leveling many times manually and with the BLTouch. But every time I use the ...
4
votes
1answer
76 views

Marlin is restarting when pins 5 Vcc are enabled and has a servo motor connected (RAMPS 1.4)

My printer uses an ATMega 2560 with a RAMPS 1.4 shield, A4988 stepper drivers and a 2004 controller LCD interface. The PSU is 360 W (12 V, 30 A). I bought a BLTouch for my printer, but when installing,...
4
votes
2answers
334 views

What are my options if I want to install a bed levelling sensor capable of operating at 100 °C?

I currently use a BLtouch 3.1, which is known to stop operating at about 35-40 °C. In fact, when I preheat the bed at 100 °C close to the probe, I sometimes get issues with the pin not retracting ...
4
votes
3answers
3k 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 ...
4
votes
1answer
282 views

BLTouch error causing bed and nozzle temp setpoints to change to zero

I replaced my CR-10 motherboard with no problems and ran fine for a few weeks, then decided to add a BLTouch. BLTouch was enabled from the config.h during compile. ...
4
votes
3answers
14k views

How Do I Speed up The BLTouch Auto Bed Leveling In TH3D's Unified Firmware?

I have just upgraded my board to TH3D's EZBoard Lite with their Unified Firmware (U2.R1.15) and whilst dialling in all the setting I have found that using the BlTouch each time to be frustrating ...
4
votes
1answer
7k views

Saving BL Touch settings

I have an Ender 3 Pro with a BL Touch. In my G-code should I add an M500 after the G29, to save the results to the EEPROM? I ...
4
votes
1answer
6k views

Klipper doesn't seem to adjust Z after BED_MESH_CALIBRATE

My rig: Ender 3 BLTouch Octopi Klipper Solid bed mounts I've updated my start G-code from Cura to include a G29 right after G28...
3
votes
2answers
125 views

Z axis no longer working on a working printer

I was printing an object and it started to drag so I stopped it. Went to move the Z-axis up so I could clear the bed and Z-axis would not budge. I switched the printer off and manually turned the ...
3
votes
3answers
11k views

Filament Leaking During Automatic Bed Leveling

Before the print has actually started I have set up Auto Bed Leveling using a BLTouch sensor, during the period that this runs I find that material leaks out of the nozzle and curls back onto itself ...
3
votes
2answers
4k views

Ender 3 Pro will not auto home correctly after mainboard & BLTouch upgrades

I made two updates to my Ender 3 Pro: Silent Mainboard and BLTouch. My printer head is way out of sync now. After I Auto Home, it moves along the X-axis to the left, hits the stop switch & moves ...
3
votes
1answer
476 views

How to use a BLTouch or equivalent touch probe to 3D scan objects with a 3D printer?

I thought about using a BLTouch probe to do 3D scans of objects. The objects to be suitable require smooth gradients and enough space for the probe, without anything hitting the print head/hot end. ...
3
votes
2answers
3k views

Ender 3 with BLTouch prints slanted lines

I'm having a problem getting a clean first layer on an Ender 3 with BLTouch auto bed leveling. Thickness seems to fluctuate all over the bed, but in a consistent (repeatable) way. Here's my attempt to ...
3
votes
1answer
406 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 ...
2
votes
4answers
221 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 ...
2
votes
2answers
186 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 ...
2
votes
2answers
5k views

Ender 3 BLTouch fails in assorted ways

My recently installed BLTouch probe regularly fails to perform ABL properly. There seem to be 3-4 failure modes: Probe manages some points but fails partway through, with a "probing failed" message ...
2
votes
3answers
11k views

Ender 3 BLTouch first layer problems

I recently installed an original BLTouch V3 on my Ender 3 pro and ever since I can’t seem to get a decent print. My first layers are horrible. The install wasn’t so bad, I really thought it would be ...
2
votes
2answers
1k views

BL-Touch bed leveling seems to produce tilted bed level around Y-axis

I have a Tevo Tornado that I've outfitted with an official BL-Touch auto level sensor. I can see the bed probing run, and I can see the Z axis slowly adjust during x/y moves, so it's doing something. ...
2
votes
1answer
181 views

What would cause magic smoke with a BLTouch installed?

I decided to purchase a BLTouch for my Ender 3 V2. I did all the physical installation of the BLTouch at the same time as adding LED lighting. I plugged in the power to test the lighting (BLTouch was ...
2
votes
2answers
498 views

When do I need to get a BLTouch upgrade?

I've found many Youtube videos of makers upgrading to BLTouch sensor. I have a Creality CR-10S Pro, so far bed leveling hasn't been an issue (after some days of trial and error). My question is ...
2
votes
2answers
6k views

BLTouch calibrated, nozzle still dives into the bed

I am having a few problems with my BLTouch. I have calibrated it several times using different methods and get the nozzle being 1.3 mm lower than the BLTouch pin so a Z offset of -1.3 mm. ...
2
votes
1answer
998 views

Anet A8 with 3DTouch does not home X in the center

Working on getting my Anet A8 upgraded with some extra toys and although the sensor works, I can't get it to home correctly. I'm looking for some assistance to home the X in the center. The probe is ...
2
votes
2answers
5k views

Automatic leveling probe offset; adjusting for one side ruins the other

When I adjust the probe offset to get the proper layer height and adhesion, one side is set right but the other doesn't work. If I decrease the probe offset (say -1.100 to -1.050) the right side seems ...
2
votes
1answer
58 views

How to make Ender 5 use BLTouch probe for Z homing?

Backstory I set up the BLTouch module as explained in the guide that came with it - that included unplugging the Z axis switch, and replacing it with a pair of wires from the BLTouch module. I managed ...
2
votes
2answers
311 views

How do I know if my BLTouch is faulty or firmware is faulty?

I just got the Ender 5 Plus with BLTouch set up today. I was having some massive issues and determined that my leveling was off because the BLTouch was flashing red and not connecting. When I turn on ...
2
votes
1answer
808 views

Why is BLTouch Still Probing Off the Bed Even When `NOZZLE_TO_PROBE_OFFSET` is Set?

So I am almost finished upgrading my CR10s with Hemera and BLTouch hardware, however I can't get past this one problem. In the picture, you can see that the probe is to the left of the nozzle, and ...
2
votes
1answer
1k views

BLTouch doing poor job of levelling

I'd appreciate any advice on this problem. I have and Ender 3 Pro with a glass bed. I have been using Marlin 2 with mesh bed levelling and it has been working really well. I have now installed a ...
2
votes
1answer
1k views

Anet A8 Marlin BLtouch moves up instead of down during homing

I have a previously working Anet A8 that I just flashed to Marlin 1.1.9 (bugfix) and installed a real BLtouch sensor. I followed setup instructions and believe my wiring is correct. When I try to do a ...
2
votes
1answer
2k views

How can I fix First Layer Adhesion with BL Touch - Tevo Tarantula

Hope someone might have a view on where to go with this. My prints were coming out pretty good, but since installing a BL Touch to the printer I've been unable to get consistent first layer adhesion. ...
2
votes
1answer
482 views

Understanding of the auto bed leveling process (BLTouch)

I just installed my BLTouch clone (Marlin 1.8) on my Anycubic i3 Mega Ultrabase and finding confusing information about the Z_PROBE_OFFSET_FROM_EXTRUDER or the M851 ...
2
votes
1answer
494 views

While heating, BLTouch mesh data gets worse and worse the more times you probe

The title pretty much sums up the issue. It was happening before moving to an SKR Mini E3 V1.2 and is still happening with the new board. If I run A G28, then a <...
2
votes
1answer
2k views

BLTouch missing build plate on levelling

I have finally sorted the problems out with the frozen screen, but inevitably there's always more to take there place. I have installed the latest version of the 'Tiny Machines' Firmware but on ...
2
votes
0answers
21 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 ...
2
votes
0answers
245 views

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

So I am just about at my wit's end with these stupid BLTouch sensors - with 3 separate posts on this forum regarding them, my own posts even showing in the 'Similar questions' box at the time of ...
2
votes
0answers
25 views

Z-axis rising from bed after BLTouch and homing

I have an old Ender 3 printer. I have let it sit for a year without anything to print. Nothing major has happened to it like falling or setting things on the printer. It has an old BLTouch. I set up ...
2
votes
0answers
41 views

CoreXY mesh probing issue

I am trying to compensate for bed leveling by measuring a mesh with my Z probe, a BLTouch, and I am unable to do so. I am using RepRap firmware version 3 and have a CoreXY printer. The first thing I ...
2
votes
0answers
72 views

Ender 3 v2 with Ender 400XL extender and BLTouch not working after installation

I have an Ender 3 v2 and just installed the Ender Extender 400XL and a new BLTouch. I need to modify firmware for the new dimensions of 400x400x500 mm for the new kit. I changed all that and it seems ...
2
votes
0answers
107 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 ...
2
votes
0answers
76 views

3DTouch: G-code to temporarily change probe points and Z home?

I am using a BLTouch clone (3DTouch), and with G28 and G29 in Simplify3D it auto-detects Z home right in the center of the bed ...