[BUG] Temperature reach no more working after update

[spilz87]

Bug Description

My Configurations

Required: Please include a ZIP file containing your Configuration.h and Configuration_adv.h files.

Steps to Reproduce

Hello,

I was running on 852a8d6
I print at 260°C everything worked well.

I updates to c3d2ffc
EEPROM was reset as they are no more compatible.
I keep the same PID settings for hotend

no more possible to stay at 260°C : it heat until 267°C then cool down slowly to 250°C and is no more able to go back to 260°C

I tryed to get new PID values with M303 (PID autotune) but than doesnt solved the issue :(

When i'm going back to 852a8d6 and reset eeprom, I'm able to stay at 260°C with no issue ..

Expected behavior:

be able to stay at 206°C to print as before

Actual behavior:

Not able to stay at 260°C, so error occures and printer stop working

Is there a modification in PID and temperature asservicement between both version ?
is there anyone getting the same issue ?

Thanks for your help

[boelle]

Configurations, please
Please ZIP up your Configuration.h and Configuration_adv.h files (as
requested in the Issue template) and drop them into your next reply.
We'll check them over and see if anything is amiss.

[spilz87]

Configuration and _adv.zip
thanks

[spilz87]

Im not able to stay at 260°c, it Always go from 250 to 270 again and again

[shitcreek]

Have you given bugfix-2.x a try? There has been a few changes/fixes to the temperature codes in the past day: #18465

[thinkyhead]

When you send M301 from the host does it report back the PID values that you expect?

I heard from someone recently that perhaps the EEPROM read / write of PID values has been wonky.

I've been tweaking PID code in the last couple of days, so please give the latest bugfix-2.0.x a try.

[spilz87]

I completely change my PID and going back to default, now it works ...

I find a solution but I don’t think it’s normal that upgrade change this ...

Can be closed if I’m the only one notice this

Thanks for your help

[spilz87]

When using M301 I got a close PID to the original one , not sure M301 really “explore all possibilities” for values, seems it stay close to the saved values

[AnHardt]

M301 does not make use of any previous values. It always starts from zero, as if it had never run before. Because of the always varying environment (temperature, air speeds) it finds always similar but not identical values even when using always the same algorithm with the same start values.

[github-actions]

This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.