BL Touch Auto Bed Leveling Sensor For Ender Series

BLTouch Sensor Guide: All You Need to Know

BL Touch is a type of semiconductor hall sensor and is an electronic component for 3D Printers. A precisely measures the tilt of the bed surface. It could work with any kind of bed material, such as glasses, wood, metals, and so on.

BLTouch is fulfilled with simple structure and high precision by using progressively designed solenoid and hall sensors. 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.

• Features：
  The main functions and controls of BLTouch are the same as the usual auto bed levelling sensor, which consists of an RC servo and microswitch. Thus, BLTouch can be applied on almost every board.
  Self-test： The push pin operates 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
  Wiring defect indicator： Blue and Red LED for indicating wiring defects.
  
• Easy to Use: This auto bed levelling sensor makes it easier to level the hotbed, which can precisely measure the tilt of the Bed surface. Bed levelling is not a problem anymore.
• Intelligence self-check and alarm: The function of auto levelling is adopted to make it easier to use and to increase the success rate of shaping.

Video Guide: How to Install Creality BL Touch

How to connect the wiring?

There are two types of BL touch wiring. This is the 32-bit mainboard.

32 bit

Ender-3-V2 with V4.2.7 32-bit mainboard