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    Raise3D Heated Bed thermistor and Duet2Wifi

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    • Vetiundefined
      Veti @Thomas_Stagsforge
      last edited by Veti

      @Thomas_Stagsforge said in Raise3D Heated Bed thermistor and Duet2Wifi:

      Don't why I got a 100kOhm when I first checked

      because thats the resistance at room temperature of the
      SMD Vishay NTCS0603E3104FXT
      https://www.vishay.com/docs/29056/ntcs0603e3t.pdf

      ...But according to the spec i should read 100 000ohm

      100000ohm = 100kOhm

      Thomas_Stagsforgeundefined 1 Reply Last reply Reply Quote 0
      • Thomas_Stagsforgeundefined
        Thomas_Stagsforge @Veti
        last edited by

        @Veti
        Thanks, Yeah you right but now when I measure it, I got 10kohm... Anyway, I'm gonna plug it back and check on WebControle the value.

        Are we agree that this type of thermistor is compatible with Duet2Wifi ?

        Vetiundefined 1 Reply Last reply Reply Quote 0
        • Vetiundefined
          Veti @Thomas_Stagsforge
          last edited by

          @Thomas_Stagsforge

          the thermistor on its own would be supported.

          i am not sure about the wiring and why they included a 5v line.

          Thomas_Stagsforgeundefined 1 Reply Last reply Reply Quote 0
          • Phaedruxundefined
            Phaedrux Moderator
            last edited by Phaedrux

            Doing another search on the Raise3d forums found someone doing a conversion of the N2 to Duet wifi and they say the thermocouple isn't compatible and they attach a new thermistor. But they don't say why or what about it isn't compatible. Using a thermocouple would require a thermocouple daughterboard, so maybe that's what they mean. The 5V line is also confusing. So to even try it you'd need to buy that daughterboard, which will be more expensive than just getting a standard NTC100K 3950 thermistor or PT1000 sensor that doesn't need any additional board.

            Z-Bot CoreXY Build | Thingiverse Profile

            1 Reply Last reply Reply Quote 0
            • curlypaulundefined
              curlypaul
              last edited by

              Sorry to hijack, but if you've gone that far, how about re-doing the bed completely ?

              After struggling with our N2 Printers, I changed the bed at the same time (as fitting a duet wifi and piezo for z probing) to a machined C250 bed into which i put standard glass into, and heated with a mains powered pad

              The stock bed is woeful at best anyway

              IMG_20201103_162832.jpg
              IMG_20201103_162839.jpg

              Has transformed it into a pretty good printer now

              Thomas_Stagsforgeundefined Vetiundefined 2 Replies Last reply Reply Quote 1
              • Thomas_Stagsforgeundefined
                Thomas_Stagsforge @curlypaul
                last edited by

                @curlypaul

                Hi,

                Thanks for sharing.
                I currently trying to keep a maximum of part, but it doesn't mean that I wont change it later.

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                • Thomas_Stagsforgeundefined
                  Thomas_Stagsforge @Veti
                  last edited by Thomas_Stagsforge

                  @Veti

                  Hi,

                  See this link, I suppose this is why there is +5V.

                  link text

                  I ran some test. So I plug the sensor to the duet with only 2 wires. There are connected to Signal and Gnd on the heated bed. The DuetControl app give me 25°C room temperature, not bad. I warmed up the thermistor with a blowdryer, temperature ingrease to 40°C. I currently doing a test with melting ice in a bag to get close to 0°C.

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                  • Vetiundefined
                    Veti @curlypaul
                    last edited by

                    @curlypaul said in Raise3D Heated Bed thermistor and Duet2Wifi:

                    After struggling with our N2 Printers, I changed the bed at the same time (as fitting a duet wifi and piezo for z probing) to a machined C250 bed into which i put standard glass into, and heated with a mains powered pad

                    that is really nice!

                    curlypaulundefined 1 Reply Last reply Reply Quote 0
                    • Thomas_Stagsforgeundefined
                      Thomas_Stagsforge
                      last edited by Thomas_Stagsforge

                      Hi, just a quick update. I did a test with water and ice, the temperature drop at 14°C.

                      Anyway, I think with the actual smd thermistor it will work.
                      When my duet2wifi wiring will be finished I'll be able to test it in real conditions.

                      I made a change on configuration file buy editing the B value to match the datasheet specification (4100).

                      Thanks everyone for your help.

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                      • curlypaulundefined
                        curlypaul @Veti
                        last edited by

                        @Veti thank you 🙂

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