ANTCLABS BLTouch : Auto Bed Leveling Sensor/To be a Premium 3D Printer (With 1M Extension Cable Set)

Product Information

Credits to lushprojects at Reddit for the BLTouch Start G-code snippet for Cura. Optimized BLTouch End G-Code for Cura (Compatible with Ender 3 Pro/V2)

Because you’ll be working with the Ender 3, Ender 3 V2, Ender 3 Pro motherboard to install the BLTouch, you definitely want to unplug the wire from the printer’s power supply. Having a macro to extrude 100mm of filament is useful when calibrating the number of steps the extruder requires to move 1mm. Furthermore, the M83 command will override the G91 mode, but only for the extruder. M83 ; Set extruder to relative mode Unlike general solenoids, BLTouch does not have a spring inside. Instead, a ferromagnetic core(hexagon wrench bolt) is provided at the top of the solenoid and a permanent magnet is provided at the top of the probe pin so that it can be deployed or stowed according to the current direction of the solenoid. As soon as the probe pin reaches the stow position by the solenoid current, the permanent magnet at the top of the probe pin is attached to the ferromagnetic core (hexagonal wrench bolt), and the position of the probe pin is maintained without additional current.

Firmware Installation

It is logically has to be within its range of action. When the probe is retracted, it must be above the nozzle (otherwise we will have problems). And when it is extended, it must lower several millimeters below the nozzle to be able to act. Since there is no spring inside the solenoid, BLTouch is a very simple, safe and innovative product that can achieve its purpose with very little current and short control time, unlike general solenoids when deploying or stowing a detection pin. Learn all you need to know about BLTouch auto bed leveling sensors: what they are, how they work, and setup guide instructions. Without a doubt testing a BLTouch probe to ensure it is communicating with the servo port is essential. Thus it makes sense to include a macro that utilises the Deploy command for a BLTouch probe. M401 P0; Stow

However, for those not using the SKR Mini E3 V3 in a Creality Ender 3, a little rewiring may need doing. Now, you’re going to move the Z-axis down by small increments until the nozzle just grips a piece of paper you place underneath.

Note that depending on your 3D printer, a firmware update may be required for the BLTouch to work properly. In a nutshell, the auto home (G28) procedure is necessary for the printer to know the printhead’s current position, making it a step that the printer needs to perform before each print. Although installing a 3D printer mainboard can be daunting for those new to the process, especially the electrical side. But don’t worry, follow along with this setup guide for the SKR Mini E3 V3, and it will take you through the process step by step. The odd bit of wiring

Configuring and optimizing the BLTouch start and end G-codes is paramount for the auto bed leveling process to work as efficiently and reliably as possible, especially considering that the whole point behind using an auto bed leveling sensor is to improve reliability.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 supply voltage(Kt)) Now for the fun part! Select Levelon the Ender 3, Ender 3 V2, or Ender 3 Pro screen to run the BLTouch’s auto-leveling program. You should see the BLTouch measure 12 different points on the print bed to determine its slope. Additionally, installing a TFT touchscreen to the SKR Mini E3 V3 is another easy step, especially if the TFT is from Bigtree-Tech. However, the wiring orientation must match the SKR Mini E3 V3. BLTouch is a type of electronic component for 3D printer with built-in semiconductor Hall sensor or optical sensor.