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 glasses, woods, 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 operate two times in a test when the power is on.
Alarm : The LED light blinks if a problem was found on a self-test or during operation
BLTouch’s Standard Deviation in repeatability is around 0.005mm, at that precise.
※ The data above can be varied by assembling shape and other environments.
But assembled with the low quality 3D printer, we just get the value as 0.001~0.05mm. (It was the same BLTouch) Actually, around 0.05 is also not much problem at FDM type 3D printers.
BLTouch must be installed perpendicular to the ground.
If BLTouch push-pin can't be perpendicular to the ground, BLTouch will put wrong signal out.
■ Micro switch
BLTouch is equipped with all three function as micro-switch, servo motor and also servo arm.
Comparison would be pointless if micro switch sensor for bed leveling does not include the retraction and deployment method.
■ Inductive Proximity Sensor
At Inductive Proximity Sensors, to calculate the sensing distance for other application conditions the following parameters, which affect the sensing distance, must be taken into account. (For example : Variations in ambient temperature(Kθ), Different types of object material(Km), Size of the object to be detected(Kd), Variation of supplyvoltage(Kt))
Sa(assured sensing distance) = Sn x Kθ x Km x Kd x KtSn : nominal sensing distanceIf non-contacting Inductive Proximity sensor can be provided the same Parameter at whole working area, it must be the best auto bed leveling sensor for 3D printers.
But who can provide this?
Most of metal beds have various temperature(Kθ) areas at one bed, and its thickness(Kd) and object material(Km) are also various because of bolts, nuts, or supporters etc.
( ~ Jan. 2016 )
( ~ Apr. 2016 )
(~ May. 2017)
The Latest Version
( May. 2017 ~ )
Genuine BLTouch has a QR code on PCB.
If there is no QR code on PCB, suspect it (All BLTouch produced after May 2017 includes QR code).
The fake BLTouch produced by Chinese immoral manufacturers (such as 3D Touch and TL Touch etc.)
is hurting many consumers.
BLTouch consists of Atmel ATtiny13A, solenoid, and a push pin.
Innovative Solenoid : Ultra Power Saving
On idle state, while the push-pin is whether pulled out or retracted, there are no any electric current flowing on solenoid. Standby electric current in the whole device is below average of 15mA on working state,
but while the pin is moving, in a sudden about 100ms, under 300mA flows in the device.
Low power consumption even drops joule heating, and it prevents heat problem.
Hall Sensor : Free Bed Selection
BLTouch does not uses either optical, nor proximity(inductive/capacitive) sensor.
BLTouch is controlled by hall effect, providing high precision. Thus the bed material can be freely selected.
Optimized structure : Larger Build Size
BLTouch is a small, and technology-intensive device. Build size can be set larger than other existing auto bed
Easy to Use
BLTouch uses existing RC Servo motor signal intactly, so just plug BLTouch on the same pins after removing servo motor.
Control by G-code
Internal 3.3V logic conversion
If you want 3.3V Logic, please cut the copper line between the pad on PCB like this photo.
BLTouch-Smart V1.0 Push-pin (Aluminium)
BLTouch-Smart V2.0 Push-pin(Engineering plastic)
To protect the device, it can bend more easily than aluminum pins.
※ BLTouch must be keeped perpendicular to the ground.
※ Additional power supply can be needed in case which your board does not supply enough amperage.
※ Electronic devices can be damaged or even destroyed if connected to the wrong side polarity.
※ The action as pulling/pushing hard the push-pin can make the BLTouch damaged and less accuratte.
※ Selling price and specifications are subject to change without prior notice.
1 X BLTouch(BLTouch-Smart)
Spare parts - for just in case something happens
2 X Screw & Nut & Washer
2 X Dupont Housing Shell 3Pin
2 X Dupont Housing Shell 2Pin
2 X Dupont Housing Shell 1Pin
10 X Dupont Terminal
1 X Jumper Cap
- Genuium BL Touch, provided by Antclabs, has a QR code on PCB.
- 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 glasses, woods, metals, and so on.
- 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.
- Need adjust the G-code in slicing software, please follow the manual.
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
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