As I mentioned elsewhere I have a Creality Ender 3 modified with a MKS Gen L 1.0 board. It's running Marlin 1.1.x. I have printed with this setup fine.
Yesterday I got my BLTouch sensor. I printed a simple mount, installed it, and shimmed it to allow the extended BLTouch to probe the base before the print head hits. After some editing of Configuration.h I can get Marlin to run Bilinear bed leveling with a G29 code. To figure out the amount that the probe sticks out I just used manual GCode after a "G28 Z" until I got the print nozzle to have the normal "1 sheet of paper" clearance. I programmed this in my Configuration.h and reflashed with platformio. My offset is "-0.45"
I did have some issues with the back right corner hitting the binder clip on the bed. But I solved this by just removing that clip.
In Pronterface I did G28 X Y Z followed by G29. This is the output.
Code: Select all
Printer is now online.
>>> G28 X Y Z
SENDING:G28 X Y Z
echo:Unknown command: "M1M105"
>>> G29
SENDING:G29
Bilinear Leveling Grid:
0 1 2 3
0 +0.009 -0.005 +0.046 -0.010
1 +0.147 +0.040 +0.032 -0.021
2 +0.257 +0.090 +0.088 +0.075
3 +0.233 +0.181 +0.255 +0.188
I edited the statup code for Cura to run G29 immediately after G28. It does the probing sequence then starts to print. I've tried about a dozen times and the print never works at all. There is always 1 corner that is way off, with the nozzle too close to the bed. So no printing occurs over there.
Where should I go next from here? I'm out of ideas. I've tried probing a 6x6 grid and it makes no difference.
Here is my current Configuration.h