Lost communication with MCU scanner - Cartographer problem

General Discussion
1

Hi,

I’m on Qidi Plus 4 and recently started getting Lost communication with MCU scanner error mid print (usually around an hour into the print)
I attach klippy.log, could someone have a look at it and tell me if there’s anything obvious ? I can see there’s a lot of bytes_retransmit=9 bytes , but don’t know why is it always 9?
Doesn’t seem like a random cable issue. Or am I wrong?
klippy.log (2).txt (3.8 MB)

2

Hello @bushman !

Already tried on a genuine Klipper?

Git version: 'v0.12.0-65-g96ab9069-dirty'
Untracked files: klippy/extras/chamber_fan.py, klippy/extras/gcode_macro_break.py, klippy/extras/gcode_shell_command.py, klippy/extras/qdprobe.py, klippy/extras/cartographer.py, klippy/extras/idm.py, klippy/extras/scanner.py
Modified files: klippy/configfile.py, klippy/extras/bed_mesh.py, klippy/extras/gcode_move.py, klippy/extras/hall_filament_width_sensor.py, klippy/extras/heater_bed.py, klippy/extras/heaters.py, klippy/extras/homing.py, klippy/extras/probe.py, klippy/extras/save_variables.py, klippy/extras/smart_effector.py, (+20 files)
3

Hi,
no, I didn’t . I was told by cartographer people to switch to Kalico so I can switch off non critical MCU. I am waiting for ST-link v2 as apparently I will need to flash toolhead mcu as well

I’d rather find out what the problem is and fix it than mask it though. Also , I’m confident following instructions , so I can install it, but the last point there is “you can now start configuring”! And I’m not sure yet what it involves :smile:

It’s really wierd as the error only happens when printing higher temp filaments, even with enclosure opened. It’s fine printing PLA

4

I would ask on the Cartographer Discord for this problem.

1 Like
5

I did check the log.
The cartographer does not provide any meaningful metrics.
So, we actually can’t help.
The kalico won’t solve this either.

I hope that in the near future, we can simply say that “well, use mainline: Cartographe V3: Reverse engineering”

Otherwise: The "dirty" Flag and the Team's Position

6

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