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    No heater printing

    Duet Hardware and wiring
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    • Kulitorum
      Kulitorum last edited by

      I made a clay extruder for my printer.

      How can I make reprap firmware print without any heater or temperature sensors?

      Does it have a fake heater that I can make always return 200c or something to make the firmware extrude with a cold extruder, or even without temp sensors?

      Thanks.

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      • Whitewolf
        Whitewolf last edited by

        Take a look at the gcode wiki you will find commands for cold extrusion

        Exploring the universe wherever the tech blows

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        • lars
          lars last edited by

          M302: Allow cold extrudes

          M302 P1

          https://duet3d.com/wiki/G-code#M302:_Allow_cold_extrudes

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          • Kulitorum
            Kulitorum last edited by

            ThenI still have to install thermistors, just to give it some kind of temperature reading, but the printer does not have any real need for a temp reading.

            I will install one for now, and suggest that a fake temperature sensor is added to the firmware.

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            • Dougal1957
              Dougal1957 last edited by

              instead on installing thermistors you could use a 100K resistor in there place

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              • dc42
                dc42 administrators last edited by

                If you define your tool as having no heaters in the M563 command, I don't think you should need to use any temperature sensors. Have you tried 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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                • Kulitorum
                  Kulitorum last edited by

                  Yes, I tried that. I dont remember what went wrong, but I could not get that to work too.

                  I have installed a thermistor and added M302 P1 to my init code, and that works.

                  Thanks

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                  • dc42
                    dc42 administrators last edited by

                    I've just tested the forthcoming RRF 1.18RC1. If you create a tool with no heaters, extrusion does work using G1 E commands. However, DWC 1.17+2 greys out the Extrude and Retract buttons. This appears to be fixed in the beta of DWC 1.19 that chrishamm has given me to test.

                    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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                    • Kulitorum
                      Kulitorum last edited by

                      Ok, great.

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