Hi guys! I have a few 3d printers and I recently bought an original Ender 3 off of Facebook Marketplace and put in a new motherboard (the 4.2.7). I updated the firmware on it (Ender3Marlin2.0.6HW4.2.7BLTouch.bin Firmware from “Ender-3 Marlin2.0.6 CR-touch or BLtouch firmware) and when I got to the bed levelling with the BLtouch I had, it went to the corner and tried to autolevel in the air, off the build plate. This obviously shouldn’t happen and I am confused why it didn’t work the way I thought it would. Do I need to go into the .bin file and change the offsets for the probe? What would be the best way to do that? I haven’t had to do this before so I would like to make sure I do it correctly before I mess around with the .bin file.
I have just been through a similar problem with a new Ender 3 with the 4.2.2 board. Question, are you certain that the firmware has flashed? I only ask as my problem came down to a faulty SD card that could be read by my PC but as it turns out, not by my printer. The behaviour of your printer is very similar to what I had been experiencing with my Ender. Now that I have solved my issue, the print head now goes to home in the middle of the print bed. Just a thought, BTW I am a complete novice at this and only have that small pearl of wisdom to pass on. Good luck.
I just updated the firmware on mine (4.2.7 board) and noticed the same thing. Update went fine; printer works good - except for it tries to do the auto bed leveling off the front of the bed. I have the CR Touch leveling upgrade kit installed.
I used the firmware file Ender3Marlin2.0.6HW4.2.7BLTouch.bin as well.
I’m very new to this 3d printing thing.
I am not familiar with that version of creality ender 3 software as I usually compile my own version of Marlin. If creality has implemented the BLTouch correctly you should be able the adjust the offsets via the ender 3 screen. Select configuration - Advanced settings - Probe offsets. This should display the offset of the X , Y and z. IF this is so, measure the distance the probe it is from the nozzle in the x and y direction and enter the values on the screen. if the probe is on the left side the value is negative. if the probe is the front of the nozzle the value will also be negative.
donot set the z offset yet.
if these screens are not present then you may need to download the latest version of marlin and learn how configure and compile the file to down load to you printer. If this is the case I can help.
Thanks! That fixed it. My Y offset was 0, it needed to be -3.5.
Is that because of the way I have the thing mounted? In this picture it is on top of the hotend shroud. Should it be under it?
