How do I remove the mintemp bed check, or at least reduce the trigger temperature?
 
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How do I remove the mintemp bed check, or at least reduce the trigger temperature?  

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mchahn
(@mchahn)
Trusted Member
How do I remove the mintemp bed check, or at least reduce the trigger temperature?

Every night it gets down to about 10 degrees C in my garage.  Every morning there is a mintemp error and I have to go out to the garage and reset the printer before I can print.  This is a PITA and I don't see why the temp needs to be set so high.  Why wouldn't 2 degrees C work?  

How do I remove the mintemp bed check, or at least reduce the trigger temperature?

Best Answer by Neophyl:

Yes the Mk3 firmware is open source.  Its available on github.  However I don't think its a change one line of code process.  Please read https://github.com/prusa3d/Prusa-Firmware/issues/2787 and do a search on the open and closed issues in that repository to get a better idea of what you are changing.
As I mentioned you are messing with fundamental safety related features.  

Also https://github.com/prusa3d/Prusa-Firmware/issues/3053 is the main current active request for the functionality to be changed.

Veröffentlicht : 23/12/2022 5:43 am
mchahn
(@mchahn)
Trusted Member
Themenstarter answered:
RE: How do I remove the mintemp bed check, or at least reduce the trigger temperature?

Or... A third option would be to have the error automatcially reset when the temp gets above that threshold.  This makes the most sense.

Veröffentlicht : 23/12/2022 6:40 am
adesir
(@adesir)
Honorable Member
RE: How do I remove the mintemp bed check, or at least reduce the trigger temperature?

Or... Consider the Prusa i3 is a mechanical device which operates correctly inside a specific temperature range. A heated enclosure would be a good solution.

 

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Veröffentlicht : 23/12/2022 7:05 am
Neophyl
(@neophyl)
Illustrious Member
RE: How do I remove the mintemp bed check, or at least reduce the trigger temperature?

It’s has to do with the temperature curve of the thermistor, there’s very little change of resistance for temps lower, it’s not really reliable enough to still use as part of the safety feature really. 
In answer to your question you would have to modify the firmware and recompile it yourself if you wanted to remove or change the value. This has been brought up both here and on the mk3 GitHub many times. Maybe one of the other older threads will add something to your quest. 

Veröffentlicht : 23/12/2022 11:09 am
mchahn
(@mchahn)
Trusted Member
Themenstarter answered:
RE: How do I remove the mintemp bed check, or at least reduce the trigger temperature?

recompile it yourself

Is the SW open-source?  If I fixed it so the error is cleared when the temp goes back up then maybe it could be added to the code.  From what you say it is a popular request.

Veröffentlicht : 23/12/2022 6:41 pm
Neophyl
(@neophyl)
Illustrious Member
RE:

Yes the Mk3 firmware is open source.  Its available on github.  However I don't think its a change one line of code process.  Please read https://github.com/prusa3d/Prusa-Firmware/issues/2787 and do a search on the open and closed issues in that repository to get a better idea of what you are changing.
As I mentioned you are messing with fundamental safety related features.  

Also https://github.com/prusa3d/Prusa-Firmware/issues/3053 is the main current active request for the functionality to be changed.

Veröffentlicht : 23/12/2022 7:20 pm
mchahn
(@mchahn)
Trusted Member
Themenstarter answered:
RE: How do I remove the mintemp bed check, or at least reduce the trigger temperature?

Ok.  I now realize this is a well-known problem.  I only searched here.

Thanks.

Veröffentlicht : 23/12/2022 7:43 pm
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