Filament sensor not working on colour change
 
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[Solved] Filament sensor not working on colour change  

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Arbre Designs
(@arbre-designs)
Member
Filament sensor not working on colour change

PrusaConnect

Printer type - MK4S (Upgraded from MK4)

Printer UUID (you can find it in Printer detail page - address line) - 40ff2840-4f88-4d52-8efc-e28d3ff94782

Printer firmware version - 6.2.0+8816 (Same issue happened in 6.1.3)

PrusaSlicer version  - 2.9.0

Description of the bug, including steps to reproduce (if possible).

When making a manual colour change (Add Color Change set in Prusaslicer layer slider), the filament sensor is not detecting the new filament when it is inserted. At other times the filament sensor is working normally. 

I had to abort the print and reset the printer to continue. 

I've tired resetting printer and turning off/on. The error occurs in multiple models. 

It's been some time since I last did a manual colour change, so I'm not sure how long the bug has been present. 

 

 

 

Posted : 09/02/2025 12:43 pm
Arbre Designs
(@arbre-designs)
Member
Topic starter answered:
RE: Filament sensor not working on colour change

I remembered that I did some manual colour changed prints at Christmas, so the bug has occurred in the last few weeks. 

Posted : 11/02/2025 1:10 pm
Arbre Designs
(@arbre-designs)
Member
Topic starter answered:
RE: Filament sensor not working on colour change

After a bit more pondering, I re-ran all of the calibrations including the one for the filament sensor (I'd forgotten that one existed). 

Problem solved - the sensor is now working fine. 

 

Posted : 16/02/2025 6:28 pm
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