As the BLTouch does not require any specific instructions after the printing process is over, adding the M400 (Finish Moves) G-Code as the first line of the end G-code should be sufficient to configure the end G-code. While seeing your BLTouch blink red can be disappointing, especially if you have installed it for the first time, it’s an issue that you shouldn’t worry too much about as it is pretty straightforward to solve in most scenarios. If your control board does not provide Servo pin, please modify as following. Connect orange wire to the spare I/O pin such as Endstops or Extensions pin (e. g : Xmax, Ymax, Zmax, etc.) and add following code to pins_YourMotherboard.h.

The main reason for me would be not having to be leveling 4 corners with a sheet of paper or making squares in bed. If we make the leveling of the printing surface in the 4 corners, when you are leveling one another it is unbalanced. In the end, so that everything is square, you end up making several passes, especially if you are a precision maniac. The best way to do this is to move the print head to the center of the print bed and then adjust the distance between the nozzle and the print bed as you would for manual leveling. A piece of paper should just fit in between with some friction when moving. Step 6: Leveling the Print Bed You can either remove the wire from the mainboard when you open it up later on, or you can simply zip-tie the wire behind the frame. Once again, if you are using a BTT UPS 24V Power Out Module. Then take a look at our guide to setting up the BTT UPS 24V. LCD Installation Although the Creality Ender 3 line of printers don’t ship with a filament sensor as standard, many like to add one to their 3D printer. However, because of the many varied options available, it’s hard to include them all. Instead, the above image and below table shows the wiring orientation for the E0-STOP (Extruder 0 Filament Runout Detection) on the BTT SKR Mini E3 V3 3D printer mainboard. Signal (White)

However, these physical switches give the other fancier sensors a run for their money when it comes to the cost and ease of configuration. Since physical switches are the simplest and earliest form of Z-homing sensors, they’re easy to obtain and trivial to set up. If you would like to learn more about the flashing patterns of the LEDs and what they signify, you can refer to the BLTouch manual. Wrapping Up As executing the G28 command disables bed leveling as a side-effect, running the G29 command after G28 ensures that both the auto home and the bed leveling (with BLTouch) procedures are successful. BLTouch has a simple structure and high precision thanks to the use of a progressively designed solenoid and Hall sensor. It aims for ease of use and pleasant printing by incorporating many intelligent functions such as self-test, alarm, alarm triggering and touch switch mode, blue LED for the display of the servo signal and Z-Probe (Zmin) tests. Before you close it up, note the version of your mainboard (4.2.2 or 4.2.7). It’s written in the center of your mainboard.

Once you’re done with the offset, you’ll need to choose the type of bed leveling you want. There are about five different types of leveling methods that you can choose from, but we’ll using the Bilinear method since it’s easy to get started with. That being said, whether you use a BLTouch or not, we recommend adding the M400 (Finish Moves) command as the first line of the end G-code section to ensure that the task queue is clear before the end G-code commands start running. If you’re using the adapter board, place the adapter board into the connector where the LCD ribbon cable used to be. (It will only fit one way.) Likewise, thermistors are not polarity sensitive. But for the printer to function correctly, they need inserting into their corresponding connections. Moreover, the heated bed thermistor plugs into the THB connector and the hotend thermistor into TH0.Let’s not discount the old-fashioned physical microswitch. Compared to the BLTouch, this option is less accurate and possibly less reliable in the long term, since the sensing depends on physical components which can wear over time (at least for the physical switches found on most FDM machines). define Z_SAFE_HOMING_X_POINT ((X_BED_SIZE) / 2) // X point for Z homing when homing all axes (G28). You may notice a variety of options for the new Ender 3 V2 firmware. Here’s what you need to figure out. Motherboard type However, for those not using the SKR Mini E3 V3 in a Creality Ender 3, a little rewiring may need doing. Configuring the start G-code to start the process of auto bed leveling with BLTouch requires the addition of two G-code commands after bed heating ( M190) is complete; G28 (Auto Home) and G29 (Bed Leveling).

As there are a few different ways you can set the start G-code up for the BLTouch, it’s definitely possible for your BLTouch start G-code to be unoptimized even though it functions correctly. It’s undeniable that proper bed leveling is one of the cornerstones of successful 3D printing, as a bed that isn’t level will throw all the calculations of the 3D printer off and cause many severe issues such as weak bed adhesion, inconsistent extrusion, and many more. It may be that it is quite tight above the slot, as there are a lot of cables connected there, making it difficult to access the slot. I was able to just push all the cables to the side and then plug it in. Later, the printer will perform 9 probe points automatically at the beginning of each print. This way I won’t have to go corner by corner unnecessarily to calibrate my bed. By default it is deactivated, so we will activate the BABYSTEPPING option, as I show you below: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. Today, our topic will be the configuration and optimization of start and end G-codes to activate the auto bed leveling process with a BLTouch as optimally and efficiently as possible, which will ensure that your build plate is level before each print.