Ender 3v2 with Sprite Extruder Pro and BL touch

Marlin Firmware Service Support
,
1

Hello everyone,

I’ve had a Creality Ender 3 with the “Sprite Extruder Pro” for a while now. Recently, I decided to upgrade by adding a BLTouch (purchased from AliExpress). After it arrived, I connected the BLTouch directly to the designated port on the Sprite Extruder Pro, and then connected the cable that came with the BLTouch to the motherboard. I didn’t disconnect the Z-axis cable since I assumed it wasn’t necessary because it’s connected elsewhere.

After downloading the appropriate firmware, I tried the auto home function. It seems to work fine—it moves to the center and slowly lowers until it touches the BLTouch (it stops slightly above the bed, but I assume I’ll need to adjust that later). However, when I try to perform bed leveling, the nozzle moves to the front-left corner, as if it’s about to start printing, but the BLTouch ends up off the bed, so it can’t properly probe the 9 points to level the bed.

Has anyone encountered this issue before? If so, could you share the firmware that helped you resolve it?

Thanks in advance!

2

when you home it should do this in the middle. you are correct you need to adjust to z-offset to tell the firmware the amount to lower the nozzle to be correctly above the bed. for example mine is -1.9mm.

when you do a bed leveling the nozzle will moze to x=0 and y=0, wait for the bed temp to reach temperature then start probing. in your case it sounds like probe offset is sightly of.

the a setting called probe offeset where you can tell the software how far the probe is from the hotend. in my case x=-45 y=-7 and ad already stated z=-1.9.

if you are using octopi the the is a great plugin that allows you to edit the eeprom