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andrivet avatar andrivet commented on August 23, 2024

So this issue (error not displayed) is a consequence of a new feature introduced in Marlin in 2021:
MarlinFirmware/Marlin#23172
This change was released with Marlin version 2.0.9.3. It is related to this issue:
MarlinFirmware/Marlin#23172

The problem is the following:

  • The nozzle is parked before displaying the error
  • The parking itself takes some time and does not refresh the watchdog and as a consequence, the printer is automatically rebooted by the MCU.

I find the choice of Marlin somewhat strange. If there is a hardware error, it is better (in my point of view) to avoid doing complicated things like moving.

The solution I have implemented in version 5.5.0 is to introduce a new flag NOZZLE_PARK_ON_ERROR in Configuration.h. This flags is used in loud_kill (Temperature.cpp) instead of NOZZLE_PARK_FEATURE and is not defined (commented) in the configuration of ADVi3++. So the change to Marlin's code is minimal.

from advi3pp.

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