BLTouch-Smart : Auto Leveling Sensor for 3D Printers

With BLTouch, your Open-source 3D Printer can be also a Masterpiece.

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

It could work with any kinds of bed materials, such as glasses, woods, metals, and so on.

https://www.youtube.com/watch?v=si7REAU-5FM

★https://youtu.be/JFXXRYRnT0c?t=20m46s ---->  ★ https://youtu.be/ohPhMVtxsK4?t=4m20s  ---->  ★ https://youtu.be/7p1ZTQGISnc?t=1m14s

★https://youtu.be/_CalClYNv-k?t=3m22s

https://www.youtube.com/watch?v=3bPx5PDBLzc

https://www.youtube.com/watch?v=MdE9qHayHPE

BLTouch Setting Video : https://www.youtube.com/watch?v=kh8dfugXY18  

BLTouch uses the same servo signal which used in previous servo line.

■ Solenoid Push-pin Up ➡ servo signal 90Degree(ex : M280 P0 S90 )  ← PWM

■ Solenoid Push-pin Down  ➡ servo signal 10Degree(ex : M280 P0 S10 )

■  Manual Self-test ➡ servo signal 120Degree(ex :  M280 P0 S120)

■ Alarm Release ➡ servo signal 160Degree(ex : M280 P0 S160) 

■ Zmin Test Mode  ➡ servo signal 60Degree(ex : M280 P0 S60 )

※  BLTouch can be operated in the following condition.

  - One I/O(PWM or Software PWM)  for control 

  - One I/O for Zmin

  - GND and +5V  power

※  Soldering and Firmware updating might be needed on a case. 

Wiring :

      3Pin :  Brown(- , GND)     Red(+5V)     Orange(control signal)

     2Pin :  Black(-, GND)       White(Zmin)

Specification :

    Voltage : 5V               Current : 15mA               Maximum(Peak) Current : 300mA

    Case M​aterial :  Polycarbonat(PC)                   Case Color : Semitransparent White         

    Cable Length : 150mm                                     Weight : 0.35 oz ( 10g )

    PCB & Soldering : RoHS, Lead Free (Pb Free)