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But before we look further into the collection of different macro commands for RRF. Let us begin by showing how to install or add new macros commands via the RRF Duet3D Duet Web Control (DWC). Manually adding a macro Depending on the firmware version, the submenu may look different. With some you can set how many points it should probe, sometimes it starts automatically. While unoptimized BLTouch start G-code can also perform the task of auto bed leveling without issues, as long as the code does not contain invalid syntax, reducing the print time as much as possible is a significant addition to the printing process. Optimized BLTouch Start G-Code for Cura (Compatible with Ender 3 Pro/V2) 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. Also, since the probe goes below the nozzle, the offset needs to be negative. We recommend setting it to about -2.5 for safety and then adjusting from there. You’ll want to change the values of the following lines to match your numbers:
When handling any form of electricity, taking care is essential. So before you begin removing and installing a 3D printer mainboard. Ensure the mains to the Power Supply Unit is switched off. DC IN We will start the configuration by editing the file Configuration.h with your favorite text editor (mine is Sublime). Once you have edited it, we are going to indicate to our dear Marlin that our 3D printer has a limit switch (sensor) on the Z axis. We will proceed to uncomment the USE_ZMIN_PLUG options.
Adjust the Z-offset down a little at a time to avoid running the nozzle into your print bed and damaging it. M109 S{material_print_temperature_layer_0} ; Wait until the extruder reaches the desired temperature
When using the BLTouch, it’s important to keep the surface of the bed free of any debris. The mechanical probe senses the surface of the bed, and any damage or debris on the surface will result in inaccurate readings. Once you found the firmware bundle binary that you’re looking for, you will want to drag it to an empty SD card that is under 8GB or less. Install the New Firmware on the Printer Tip: Over time, the print bed can become somewhat misaligned. For example, by removing print objects too roughly or loosening of the spring tension of the print bed bearing. If the inclination of the print bed is too big, even the BLTouch can no longer do anything. However, this is actually only the case in extreme cases. Therefore, you should always level the print bed manually if you encounter printing errors. Step 6 (optional): Customize CuraBecause the mainboard features onboard TMC2209 stepper drivers, the BTT SKR Mini E3 V3 is pre-configured to utilise UART mode. Thus no jumpers need enabling for this feature. This step sounds more challenging than it actually is. Assuming you copied the right file to the SD card, all you need to do is put the SD card in the printer and power it on. From there, the printer will pull the file and install it on the printer. The entire process should take less than 30 seconds. Once the printer boots into the standard interface, you can remove the SD card. Now got to the Menu – Control – Bed Leveling – Store Settings. It’s important that you do this. If you don’t, the value will be erased when you power the printer off.
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. Fortunately, the wide availability of automatic bed leveling sensors, such as the BLTouch, turn the bed leveling process from something unreliable and arduous to a process that you will never have to think of again once you install and configure the probe correctly. The BLTouch wiring connects to the Ender 3 mainboard by splicing into the Z Endstop connector. This connector is labeled with a small yellow label that reads “Z”.M190 S{material_bed_temperature_layer_0} ; Wait until the heated bed reaches the desired temperature A flashing red light is almost always a sign that something is wrong, and unfortunately, it’s no different in the case of the BLTouch either.
And in this other line of the code we are going to indicate that our installed sensor is a BLTouch / 3DTouch, which for Marlin come to be the same. 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. In my printer I use a leveling function available in Marlin 2 called BABYSTEPPING. This function allows me to calibrate the height of my leveling sensor in the center of the bed once with a sheet of paper. In this way, and in real time, you can adjust the offset while you are making the first printing perimeters, and leave a perfect fit. To me this has saved me the odd impression, the truth is that it is quite useful. The G29 command causes the 3D printer to start automatic print bed leveling. It is best to do this immediately after it has moved to the home position (G-code command G28).
While a few different factors can cause the BLTouch to blink red slowly, the fix is usually simple. Now that the correct firmware is installed, you have set the Z-Offset and everything is mounted correctly, you can start the automatic print bed leveling. With the new firmware, you will find a new “Leveling” button in the menu. Even though paying attention to these two factors for configuring the start G-code will ensure that your BLTouch will run and automatically level the bed before each print, the code won’t be fully optimized, which we will cover next. How to Optimize the BLTouch Start G-Code? Without a doubt, having three PWM controllable fan outputs on the SKR Mini E3 V3 is perfect for using thermostatically controlled fans to save on both noise and power. Because maybe you can’t read the default Chinese Ender 3 menu. Which is the correct firmware for Ender 3 V2?
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