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how to use the new heater tuning algorithm on 3.2 ?

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  • undefined
    Charlie
    last edited by 7 Jan 2021, 05:09

    And M303 H# S# should allow you to tune the heater.
    Tuning

    M303

    undefined 1 Reply Last reply 7 Jan 2021, 05:11 Reply Quote 0
    • undefined
      lui2004 @Charlie
      last edited by lui2004 1 Jul 2021, 05:12 7 Jan 2021, 05:11

      @Charlie

      i dont understand the config.g for new algortihm

      for tuning is like thats?

      Nozzle thermistor :
      M303 H1 S230
      BED:
      M303 H0 S70
      1 Reply Last reply Reply Quote 0
      • undefined
        Phaedrux Moderator
        last edited by 7 Jan 2021, 05:17

        For the hot end you can now tune it as a tool instead of just a heater to allow for the tool fan to be part of the tuning process so that the algorithm can compensate for the cooling effects of the part fan.

        Ex: M303 T0 S205

        Z-Bot CoreXY Build | Thingiverse Profile

        undefined undefined 2 Replies Last reply 7 Jan 2021, 05:19 Reply Quote 0
        • undefined
          lui2004 @Phaedrux
          last edited by 7 Jan 2021, 05:19

          @Phaedrux

          ok thank @Phaedrux

          what i must change in my config.g ?

          undefined 1 Reply Last reply 7 Jan 2021, 05:20 Reply Quote 0
          • undefined
            Phaedrux Moderator @lui2004
            last edited by Phaedrux 1 Jul 2021, 05:21 7 Jan 2021, 05:20

            @lui2004 Nothing. You tune as normal and save the results, just like before.

            See the entries for M303 and M307 for details on the changes.

            https://duet3d.dozuki.com/Wiki/Gcode?revisionid=HEAD#Section_M307_Set_or_report_heating_process_parameters

            Z-Bot CoreXY Build | Thingiverse Profile

            1 Reply Last reply Reply Quote 0
            • undefined
              lui2004
              last edited by 7 Jan 2021, 05:21

              @Phaedrux said in how to use the new heater tuning algorithm on 3.2 ?:

              M303 T0 S205

              ok perfect after tuning i will safe it with M500 and its done ?

              undefined 1 Reply Last reply 7 Jan 2021, 05:21 Reply Quote 0
              • undefined
                Phaedrux Moderator @lui2004
                last edited by 7 Jan 2021, 05:21

                @lui2004 Yes, as long as you also have M501 at the end of config.g to load your saved results.

                Z-Bot CoreXY Build | Thingiverse Profile

                undefined 1 Reply Last reply 7 Jan 2021, 05:22 Reply Quote 0
                • undefined
                  lui2004 @Phaedrux
                  last edited by 7 Jan 2021, 05:22

                  @Phaedrux

                  yes i have M501 in my config.g

                  thanks a lot

                  1 Reply Last reply Reply Quote 0
                  • undefined
                    theruttmeister @Phaedrux
                    last edited by 7 Jan 2021, 06:20

                    @Phaedrux said in how to use the new heater tuning algorithm on 3.2 ?:

                    For the hot end you can now tune it as a tool instead of just a heater to allow for the tool fan to be part of the tuning process so that the algorithm can compensate for the cooling effects of the part fan.

                    Ex: M303 T0 S205

                    Can you elaborate?
                    There doesn't seem to be a way to auto-tune with both fan on and off, to give the two sets of parameters that would be needed.

                    Isolate, substitute, verify.

                    undefined 1 Reply Last reply 7 Jan 2021, 06:39 Reply Quote 0
                    • undefined
                      Phaedrux Moderator @theruttmeister
                      last edited by 7 Jan 2021, 06:39

                      @theruttmeister it should be automatic when you tune as a tool versus as a heater. It will turn the fan on and off during the process and use that info. Beyond that it's all magic to me.

                      Z-Bot CoreXY Build | Thingiverse Profile

                      1 Reply Last reply Reply Quote 0
                      • undefined
                        dc42 administrators
                        last edited by 7 Jan 2021, 07:35

                        I recommend running the tuning with the hot end close to the bed and near the centre of the bed, because proximity of the bed affects the airflow from the fan.

                        Duet WiFi hardware designer and firmware engineer
                        Please do not ask me for Duet support via PM or email, use the forum
                        http://www.escher3d.com, https://miscsolutions.wordpress.com

                        undefined 2 Replies Last reply 7 Jan 2021, 07:54 Reply Quote 0
                        • undefined
                          lui2004 @dc42
                          last edited by 7 Jan 2021, 07:54

                          @dc42

                          hi

                          can itune booth with:

                          M303 T0 S205 for Hotend

                          and

                          M303 T1 S70 for Bed is that ok ?

                          undefined 1 Reply Last reply 7 Jan 2021, 08:04 Reply Quote 0
                          • undefined
                            jay_s_uk @lui2004
                            last edited by 7 Jan 2021, 08:04

                            @lui2004 no as the bed isn't a tool.
                            Tune the bed as normal

                            M303 H0 S70
                            

                            Owns various duet boards and is the main wiki maintainer for the Teamgloomy LPC/STM32 port of RRF. Assume I'm running whatever the latest beta/stable build is

                            1 Reply Last reply Reply Quote 0
                            • undefined
                              lui2004 @dc42
                              last edited by 7 Jan 2021, 09:43

                              @dc42

                              are my results ok ?

                              ; config-override.g file generated in response to M500 at 2021-01-07 09:03
                              ; This is a system-generated file - do not edit
                              ; Heater model parameters
                              M307 H0 R0.245 C675.381:675.381 D13.14 S1.00 V24.2 B0
                              M307 H1 R2.516 C140.883:121.891 D4.68 S1.00 V24.3 B0
                              ; Workplace coordinates
                              G10 L2 P1 X0.00 Y0.00 Z0.00
                              G10 L2 P2 X0.00 Y0.00 Z0.00
                              G10 L2 P3 X0.00 Y0.00 Z0.00
                              G10 L2 P4 X0.00 Y0.00 Z0.00
                              G10 L2 P5 X0.00 Y0.00 Z0.00
                              G10 L2 P6 X0.00 Y0.00 Z0.00
                              G10 L2 P7 X0.00 Y0.00 Z0.00
                              G10 L2 P8 X0.00 Y0.00 Z0.00
                              G10 L2 P9 X0.00 Y0.00 Z0.00
                              M486 S-1
                              1 Reply Last reply Reply Quote 0
                              • undefined
                                dc42 administrators
                                last edited by 7 Jan 2021, 12:28

                                Yes those look good to me.

                                Duet WiFi hardware designer and firmware engineer
                                Please do not ask me for Duet support via PM or email, use the forum
                                http://www.escher3d.com, https://miscsolutions.wordpress.com

                                1 Reply Last reply Reply Quote 0
                                • ?
                                  A Former User @lui2004
                                  last edited by A Former User 1 Nov 2021, 13:11 11 Jan 2021, 10:18

                                  @lui2004

                                  a little bit maybe from my personal observations regarding the new heater tuning algorithm:

                                  We have here a small anycubic-i3-mega that got as new mainboard the duet-pcb, it sits in a wooden chamber with the standard heatplate used as chamber heater and 1 additional fan in the top of that chamber to "cool" the chamber by sucking out air (there are some holes in the bottom plate of the chamber to let new air in when that happens)

                                  When using the new heater tuning algorithm, I leave the door of the chamber open and put the fan of the chamber to max rpm, BECAUSE first I did it the other way round with door closed and chamberfan off and after tuning and saving the tune with M500 I got a heater fault manually heating up, because that time the door was open and the fan on and that was too much for the state it was tuned in (heating too slow/temperature rise too slow).

                                  So long story short: I would recommendate from my observations that you tune with "hardest" surrounding conditions for the heater. With hardest what I mean is, that it has to work hardest. If you tune it with the easiest condition, you might later get a sporadic heater fault when conditions get harder.

                                  (I do not know if that on the long run could be also constrained by something like this request here https://forum.duet3d.com/topic/20844/limiting-ramp-rate-in-heating-algorithm/3?_=1610360187720 but for the moment I can work with it and that is what counts.)

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