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    How does multi-extruder heating work?

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    • jml
      jml last edited by

      I'm doing power requirement calculations for my printer, and realized that maybe the Duet firmware has something built-in which allows only one extruder at a time to heat. For instance, for one PWM cycle, extruder 1 would heat, then for the next PWM cycle, the second extruder would heat, and so on for the 3 extruders. Does this functionality exist?

      This would be nice because for the printer that I'm building, it might have 5 extruders and so would reduce the load on the power supply.

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      • dc42
        dc42 administrators last edited by

        No, it doesn't have that functionality. In any case, you would usually want to heat one of your heaters to active temperature and the other 4 to standby temperature simultaneously.

        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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        • jml
          jml last edited by

          I should have clarified that I am referring to the time when each extruder needs to maintain their own temperatures in the middle of a print. Know what I mean?

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          • jml
            jml last edited by

            For example, if suddenly a very cold breeze comes in and makes each extruder several degrees colder, will each extruder's heater be constantly on, or will they take turns heating? I have a feeling the answer is the same, just thought I'd make sure.

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            • dc42
              dc42 administrators last edited by

              They won't take turns.

              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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              • deckingman
                deckingman last edited by

                For power supply requirement, you should plan for the worst case scenario which would be when you start heating all 5 hot ends from ambient (cold) and PWM is not initially being employed.

                Ian
                https://somei3deas.wordpress.com/
                https://www.youtube.com/c/deckingman/

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                • jml
                  jml last edited by

                  Ok thanks.

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