BLTouch - Auto Bed Leveling Sensor - Antclabs


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Current Stock: 31

Free shipping in Canada for orders over $140 before tax. (via Canada Post)

v3 issues on Melzi based boards?

"Smart" version 3.1 - Engineered Plastic Push-Pin 

BLTouch is an auto leveling sensor for 3D Printers based on open-source.

  • Smart
  • Simple
  • High-precision

BLTouch is a type of semiconductor hall sensor and is an electronic component for 3D printers.

BLTouch is an auto leveling sensor for 3D Printers that can precisely measure the tilt of Bed surface. It could work with any kinds of bed materials, such as glass, metals, and so on.

Main functions and controls of BLTouch are the same as usual auto bed leveling sensor, consists of RC servo and micro switch. Thus, BLTouch can be applied on almost every board.

BLTouch is fulfilled with simple structure and high precision by using progressively designed solenoid and hall sensor. It aims for user convenience and enjoyable printing by adding many smart functions, such as self-test, alarm, alarm release & Touch Switch mode, Blue LED for servo signal indicating and Z-probe(Zmin) Testing.


BLTouch can be easily applied, since it has a small and simple structure. As BLTouch works as usual auto bed leveling sensor, Gathering information & setting up your firmware will be an easy task.


  • Self-test : The push pin operates two times in a test when the power is on.
  • Alarm : The AI will flash the LED indicator if a problem is detected during a self-test or operation.
  • Wiring defect indicator : Blue and Red LED for indicating wiring defects. 


BLTouch’s Standard Deviation in repeatability is around 0.005mm.

Logic Voltage Free(Open Drain Output) 

3.3V / 5V logic voltage free(default).

Long stroke : ≒ 6.5mm

The stroke is up to 1.6mm longer than V2.0

Cable length is 15cm. Replacement cables may be required. 

Buy the Antclabs BLTouch from Spool3D in Canada without the surprise cost of the exchange rate!



5 out of 5 (based on 26 ratings)
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You can bltouch this

Just added my 2nd printer and a bltouch is a no brainer after how it helped with my first printers bed issues, save yourself the first layer headaches and let the machine do it’s job and get that first layer down nicely.
Posted by Tony, October 11, 2022

BL Touch

My first unit went haywire and then died. Derek from Spool3D sent me a new one and all is well now. After setting home (the distance from extruder tip to the bed) and then manually leveling, this unit does the trick. It dests in a grid pattern measuring the beds distance from the nozzle in numerous locations, 25 on my Ender 6 to be exact. These measurements are used to adjust the distance during the print. My bed isn't level even wen it has been leveled manually. It has deviations that the BL touch compensates for. As long as the initial home setting is close enough to the bed, BL will do the rest. I think its a must have item.
Posted by DanPro, November 16, 2021

BLTouch sensor

Replace the part fixed the problem. Quick service and shipping
Posted by John Tapper, September 24, 2021

Quality ABL sensor

My install was a bit more complicated as the board I use doesn't directly support ABL sensor but this came with plenty of extra parts and the instructions on their website are very clear. Honestly the hardest part of installing this is the software side configuration... the hardware itself is well made and easy to install.
Posted by Adam, September 20, 2021

Replacement Bl touch

Work great. A bit more rugged probe that the stock factory.
Posted by Sujesh Nath, January 21, 2021

BL Touch

Auto bed levelling is great.....when everything works. The BT Touch I purchased from Spool3D continues to give me problems. I have checked the voltages on the boeard, purchased a 2.0m connection cable with pre-wired connectors and this BL-Touch is still not working. The problem I have is sometimes it works, sometimes it doesn't. 25% of the time when I turn on the machine the BT-Touch does it's self check and drops and retracts the probe pin a couple of times. The other 75% of the time, I turn the machine on and it just sits there. I've found a flick with my finger gets it to wake up and function, but even after that I have to keep an eye on whether it's going to drop the probe or not and give it a flick to get it to work. I think I have a defective unit, this doesn't seem like a wiring or power issue.
Posted by Gary Stein, December 16, 2020

Bltouch review

Works perfect. More reliable levelling than my inductive sensor. Glows red during normal operations, but this seems to be normal. Would highly recommend and but again.
Posted by Shawn Grover, November 27, 2020

Great products and awesome customer service!!

It is a must have, and I am super happy buying It from
Posted by Francisco Caamano, August 28, 2020


Works every single time compared to the clone I had which never once made a successful mesh probing routine. I should probably know better by now. Buy once, cry once. It would have saved me hours of time over weeks trying to get the clone to work. Buy the best cry about it once.
Posted by Jordan Bourns, June 11, 2020