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    Duet 0.6 temp problem

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    Duet Hardware and wiring
    duet temperature sensor
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    • SM180undefined
      SM180
      last edited by

      Hello and excuse me for my poor english (I write from Italy).
      I have a problem with my old Ormerod 2 (528.2), equiped with a Duet 0.6: I finally decided to update firmware (now 1.26.1) and web interface (1.22.6)..... but when I restarted the printer, bed and hotend show 2000° (open circuit) !
      I test the thermistors (both values are 122k) and also wires appear ok. Pheraps a bad config.g or a vssa fuse problem?
      This is my config heaters section:

      ; Heaters
      M305 P0 T10000 B3988 R4700 ; set thermistor + ADC parameters for heater 0
      M143 H0 S120 ; set temperature limit for heater 0 to 120C
      M305 P1 T100000 B4138 R4700 ; set thermistor + ADC parameters for heater 1
      M143 H1 S280 ; set temperature limit for heater 1 to 280C

      Thanks

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      • Phaedruxundefined
        Phaedrux Moderator
        last edited by

        Did you make any other changes recently?

        If you revert firmware version does it go back to normal?

        Z-Bot CoreXY Build | Thingiverse Profile

        SM180undefined 1 Reply Last reply Reply Quote 0
        • SM180undefined
          SM180 @Phaedrux
          last edited by SM180

          @phaedrux Unfortunatly I didn't save my old config file😵, so I can't verify the old configuration solves the problem.....
          No other changes was made.

          dc42undefined droftartsundefined 2 Replies Last reply Reply Quote 0
          • dc42undefined
            dc42 administrators @SM180
            last edited by

            @sm180 do you know what firmware version you were using before the upgrade?

            Please post your whole config.g file.

            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

            SM180undefined 1 Reply Last reply Reply Quote 0
            • droftartsundefined
              droftarts administrators @SM180
              last edited by

              @sm180 Some Duet 0.6 had 1k ohm series resistors, but that would only make the temperature read around 60C at room temperature (see https://reprapltd.com/reprappro/documentation/ormerod-2/commissioning/index.html#Setting_the_temperatures_correctly). And I don't think Ormerods were shipped with those boards.

              I'd guess a config.g error. Please post your config.g

              You can test the temperature inputs with resistors; I have these in my troubleshooting drawer, to plug straight onto the temperature input pins:
              alt text

              Ian

              Bed-slinger - Mini5+ WiFi/1LC | RRP Fisher v1 - D2 WiFi | Polargraph - D2 WiFi | TronXY X5S - 6HC/Roto | CNC router - 6HC | Tractus3D T1250 - D2 Eth

              SM180undefined 1 Reply Last reply Reply Quote 1
              • SM180undefined
                SM180 @dc42
                last edited by

                @dc42 I'm not sure about the previsious version, pherhaps 1.21....; this is my config.g (I try to change the thermistore value with 3950, but nothing changes)
                config.g

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                • SM180undefined
                  SM180 @droftarts
                  last edited by SM180

                  @droftarts My Duet appears like a "1k ohm" type - resistor R21 and R19 are marked "01b".
                  20220406_093127 (1).jpg

                  ....so I have to change the R4700 value! For 1k ohm Duet is it "R1000"?

                  SM180undefined 1 Reply Last reply Reply Quote 0
                  • SM180undefined
                    SM180 @SM180
                    last edited by

                    @sm180 said in Duet 0.6 temp problem:

                    @droftarts My Duet appears like a "1k ohm" type - resistor R21 and R19 are marked "01b".
                    20220406_093127 (1).jpg

                    ....so I have to change the R4700 value! For 1k ohm Duet is it "R1000"?

                    Ok, I put "R1000" in config.g and..... IT WORKS!!!!
                    Thanks to the forum and nice printing !

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