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    After updating to 3.4.0beta2: faulty heater 1, -273.1C.

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    • dc42undefined
      dc42 administrators
      last edited by dc42

      @uneumann36 hanks for your feedback. It would be helpful if you could run the tests that I asked for in my response to @empi00, which is about 3 posts before this one.

      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

      dc42undefined 1 Reply Last reply Reply Quote 0
      • empi00undefined
        empi00 @dc42
        last edited by

        @dc42
        I will.
        But i can only do it wednessday earlierst, as I am out with my family the next days!

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        • dc42undefined
          dc42 administrators @dc42
          last edited by

          BTW I am running two tool boards in one of my machines, and I don't see this issue. I've already reviewed all the code changes twice looking for changes that might be relevant.

          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

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          • pixelpieperundefined
            pixelpieper
            last edited by

            If you need an other datapoint: it also happens with PT1000.

            Screenshot 2021-08-06 at 16.41.07.png

            (Duet 3 Mini5+ / Duet 1LC V1.1)

            Voron V2.434 / Duet 3 Mini5+, Duet 3 Expansion Mini 2+, Duet 1LC V1.1 Toolboard
            Voron V0.250 / Duet 2 Maestro

            dc42undefined 1 Reply Last reply Reply Quote 0
            • dc42undefined
              dc42 administrators @pixelpieper
              last edited by

              @pixelpieper thanks for that. It looks like something is affecting the ADC accuracy. It may be just a timing issue affecting the calibration, which is why I would like users who experience this issue to measure the H and L values that are set by the calibration process. Version 1.1 tool boards are calibrated during manufacture using firmware 3.3.

              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

              pixelpieperundefined 1 Reply Last reply Reply Quote 0
              • Sergeundefined
                Serge @dc42
                last edited by

                @dc42 Thanks, it seems to work now. But cannot make a M308 S1 L999.

                dc42undefined 1 Reply Last reply Reply Quote 0
                • Sergeundefined
                  Serge @chrishamm
                  last edited by

                  @chrishamm said in After updating to 3.4.0beta2: faulty heater 1, -273.1C.:

                  journalctl -u duetcontrolserver -e --no-pager

                  Journal.txt

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                  • dc42undefined
                    dc42 administrators @Serge
                    last edited by

                    @serge said in After updating to 3.4.0beta2: faulty heater 1, -273.1C.:

                    @dc42 Thanks, it seems to work now. But cannot make a M308 S1 L999.

                    Please explain what you mean by that.

                    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

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                    • Sergeundefined
                      Serge @dc42
                      last edited by

                      @dc42 said in After updating to 3.4.0beta2: faulty heater 1, -273.1C.:

                      @empi00 I am wondering whether it just needs different calibration. Please can you:

                      1. Send M308 S1 (assuming the tool board thermistor is Sensor 1) and record the result, in particular the H and L values.
                      2. Send M122 B121 and record the reported VIN value
                      3. Switch the tool board firmware to 3.4beta2.
                      4. Send M308 S1 again, check that it reports the same H and L
                      5. Send M122 and check tna the reported VIN value is the same as before
                      6. Run the calibration procedure described at https://duet3d.dozuki.com/Wiki/Calibrating_thermistor_and_PT1000_readings on the tool board thermistor input. If it's tricky to do the short-circuit calibration test, just do the open-circuit calibration, which should be sufficient to correct the reading at room temperature.
                      7. Send M308 S1 again to see the new H and L values
                      8. Check whether the readings are now correct.

                      I am assuming that you do not have H and L parameters in your M308 commands in config.g, so it will use the values stored in NVRAM.

                      Hi dc42, this is for that.

                      dc42undefined 1 Reply Last reply Reply Quote 0
                      • dc42undefined
                        dc42 administrators @Serge
                        last edited by

                        @serge what were the values reported by M308 S1 before and after you ran the M308 S1 H999 command?

                        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

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                        • Sergeundefined
                          Serge @dc42
                          last edited by

                          @dc42 H-8 L-13
                          after the calibration, H51 L-13, but i can't calibrate with M308 S1 L999

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                          • dc42undefined
                            dc42 administrators @Serge
                            last edited by

                            @serge said in After updating to 3.4.0beta2: faulty heater 1, -273.1C.:

                            @dc42 H-8 L-13
                            after the calibration, H51 L-13, but i can't calibrate with M308 S1 L999

                            Thanks. Do you mean you can't calibrate because you can't easily short the pins TEMP0 together?

                            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

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                            • pixelpieperundefined
                              pixelpieper @dc42
                              last edited by

                              @dc42 I went through your Procedure, I hope it helps:

                              Send M308 S1 (assuming the tool board thermistor is Sensor 1) and record the result, in particular the H and L values.

                              Sensor 1 (Hotend) type PT1000 using pin 121.temp0, reading 20.8, last error: sensor not ready, R:2200.0 L:-8 H:-12
                              

                              Send M122 B121 and record the reported VIN value

                              VIN: 24.4V
                              

                              Switch the tool board firmware to 3.4beta2.

                              Send M308 S1 again, check that it reports the same H and L

                              Sensor 1 (Hotend) type PT1000 using pin 121.temp0, reading 6.6, last error: sensor not ready, R:2200.0 L:-8 H:-12
                              

                              Send M122 and check tna the reported VIN value is the same as before

                              VIN: 24.3V
                              

                              Run the calibration procedure described at https://duet3d.dozuki.com/Wiki/Calibrating_thermistor_and_PT1000_readings on the tool board thermistor input. If it's tricky to do the short-circuit calibration test, just do the open-circuit calibration, which should be sufficient to correct the reading at room temperature.

                              H: works

                              L: M308 S1 L999

                              Error: M308: Computed correction is not valid. Check that you have placed a jumper across the thermistor input. 
                              

                              (I did jumper the input and I verified that it shorts correctly)

                              Send M308 S1 again to see the new H and L values

                              Sensor 1 (Hotend) type PT1000 using pin 121.temp0, reading 2000.0, last error: short-circuit in sensor, R:2200.0 L:-8 H:52
                              

                              Check whether the readings are now correct.

                              NO, the temperature actually dropped by 2 degrees.

                              Voron V2.434 / Duet 3 Mini5+, Duet 3 Expansion Mini 2+, Duet 1LC V1.1 Toolboard
                              Voron V0.250 / Duet 2 Maestro

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                              • pixelpieperundefined
                                pixelpieper
                                last edited by

                                @dc42 one more point: I did downgrade the 1LC V1.1 back to 3.3 and repeated the calibration procedure, worked without issues.

                                Voron V2.434 / Duet 3 Mini5+, Duet 3 Expansion Mini 2+, Duet 1LC V1.1 Toolboard
                                Voron V0.250 / Duet 2 Maestro

                                dc42undefined 1 Reply Last reply Reply Quote 0
                                • dc42undefined
                                  dc42 administrators @pixelpieper
                                  last edited by

                                  @pixelpieper thanks for that data. That gives me something to work on.

                                  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

                                  CadetCundefined 1 Reply Last reply Reply Quote 0
                                  • CadetCundefined
                                    CadetC @dc42
                                    last edited by

                                    @dc42 said in After updating to 3.4.0beta2: faulty heater 1, -273.1C.:

                                    @pixelpieper thanks for that data. That gives me something to work on.

                                    I don't know if more information is needed, but I would also like to confirm the temperature problem .
                                    recorded temperature at room temperature - RRF3.4b2
                                    temp 3.4b2.JPG

                                    recorded temperature after change to RRF3.3
                                    temp 3.3.JPG

                                    I performed the following actions

                                    1.Send M308 S1 (assuming the tool board thermistor is Sensor 1) and record the result, in particular the H and L values.
                                    2.Send M122 B121 and record the reported VIN value
                                    3.Switch the tool board firmware to 3.4beta2.
                                    4.Send M308 S1 again, check that it reports the same H and L
                                    5.Send M122 and check tna the reported VIN value is the same as before
                                    6.Run the calibration procedure described at https://duet3d.dozuki.com/Wiki/Calibrating_thermistor_and_PT1000_readings on the tool board thermistor input. If it's tricky to do the short-circuit calibration test, just do the open-circuit calibration, which should be sufficient to correct the reading at room temperature.
                                    7.Send M308 S1 again to see the new H and L values
                                    8.Check whether the readings are now correct.

                                    1.Send M308 S1 (assuming the tool board thermistor is Sensor 1) and record the result, in particular the H and L values.

                                    M308 S1
                                    Sensor 1 (Hotend) type Thermistor using pin 121.temp0, reading 21.4, last error: success, T:100000.0 B:4138.0 C:0.00e+0 R:2200.0 L:-7 H:-12
                                    

                                    2.Send M122 B121 and record the reported VIN value

                                    M122 B121
                                    Diagnostics for board 121:
                                    Duet TOOL1LC firmware version 3.3 (2021-06-15 16:12:58)
                                    Bootloader ID: SAMC21 bootloader version 2.3 (2021-01-26b1)
                                    ...........
                                    VIN: 24.9V
                                    
                                    

                                    3.Switch the tool board firmware to 3.4beta2.

                                    4.Send M308 S1 again, check that it reports the same H and L

                                    M308 S1
                                    Sensor 1 (Hotend) type Thermistor using pin 121.temp0, reading 3.1, last error: sensor not ready, T:100000.0 B:4138.0 C:0.00e+0 R:2200.0 L:-7 H:-12
                                    

                                    5.Send M122 and check tna the reported VIN value is the same as before

                                    m122 b121.0
                                    Diagnostics for board 121:
                                    Duet TOOL1LC firmware version 3.4.0beta2 (2021-08-03 10:00:09)
                                    Bootloader ID: SAMC21 bootloader version 2.3 (2021-01-26b1)
                                    ...................
                                    VIN: 24.9V
                                    

                                    6.Run the calibration procedure described at https://duet3d.dozuki.com/Wiki/Calibrating_thermistor_and_PT1000_readings on the tool board
                                    thermistor disconnected
                                    therm disc.JPG

                                    M308 S1 H999
                                    Measured H correction for port "121.temp0" is 47
                                    

                                    jumper across each thermistor input

                                    6fddb45b-fc64-4481-a930-0a25a61fedc8-image.png

                                    cM308 S1 L999
                                    Error: M308: Computed correction is not valid. Check that you have placed a jumper across the thermistor input.ode_text
                                    

                                    7.Send M308 S1 again to see the new H and L values

                                    M308 S1
                                    Sensor 1 (Hotend) type Thermistor using pin 121.temp0, reading 21.4, last error: success, T:100000.0 B:4138.0 C:0.00e+0 R:2200.0 L:-12 H:47
                                    

                                    8.Check whether the readings are now correct
                                    reading at room temperature seems to be OK.
                                    after calibration.JPG

                                    but how i can be sure about high temps?

                                    dc42undefined 1 Reply Last reply Reply Quote 0
                                    • dc42undefined
                                      dc42 administrators @CadetC
                                      last edited by

                                      @cadetc thanks for your test results. I recommend you revert the tool board firmware to 3.3 and recalibrate, until I have identified and fixed the problem. You can continue running 3.4beta2 on the main board.

                                      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

                                      CadetCundefined 1 Reply Last reply Reply Quote 0
                                      • CadetCundefined
                                        CadetC @dc42
                                        last edited by CadetC

                                        @dc42 said in After updating to 3.4.0beta2: faulty heater 1, -273.1C.:

                                        @cadetc thanks for your test results. I recommend you revert the tool board firmware to 3.3 and recalibrate, until I have identified and fixed the problem. You can continue running 3.4beta2 on the main board.

                                        so if iI go back to 3.3 for toolboard and if in config-override.g i'll put this line then i should be OK? (original factory values before calibration done in RRF3.4b2)

                                         M308 S1 L-7 H-12
                                        

                                        Hot to store this back in to nonvolatile memory?

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                                        • dc42undefined
                                          dc42 administrators
                                          last edited by

                                          @cadetc said in After updating to 3.4.0beta2: faulty heater 1, -273.1C.:

                                          Hot to store this back in to nonvolatile memory?

                                          If you ran M308 S# H999 (where # is the sensor number) then it has already been stored. Similarly for M308 S# L999.

                                          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

                                          dc42undefined 1 Reply Last reply Reply Quote 0
                                          • dc42undefined
                                            dc42 administrators @dc42
                                            last edited by dc42

                                            @CadetC @pixelpieper @Serge I am still trying to determine why I don't see this issue on my tool boards. Please can you each run M122 B# where # is the tool board number, and tell me what bootloader version it reports.

                                            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

                                            CadetCundefined pixelpieperundefined 2 Replies Last reply Reply Quote 0
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