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    Duet3D 1HCL - Closed Loop Controller Beta test

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    • MaxGyverundefined
      MaxGyver @T3P3Tony
      last edited by

      I would like to give a quick thank you to everyone involved with the development of the 1HCL-Boards and the closed loop plugin.

      Running my printer in closed loop is a real quantum leap for me. I can now comfortably print at speeds and accelerations that were really pushing the limits in open loop. In addition, the new level of reliability enables me to run larger print jobs for longer unsupervised periods. My printer was already very tough and reliable, but adding closed loop control fixed the last weak link in the chain. 🙂

      I am eagerly awaiting further developments and improvements. For example, having linear encoders that measure the head's position on the axis independent of belts and pulleys would be the ultimate closed loop solution. But I am digressing.

      Good job everyone!

      Cheers Max

      A Former User? dc42undefined 2 Replies Last reply Reply Quote 0
      • A Former User?
        A Former User @MaxGyver
        last edited by A Former User

        @dc42
        Hey
        While you're printing with this pieces of gold, I ask myself where I can buy this board or how I can also test it?

        I'm producing custom extra large toolchanger, so it would be that helpful!!
        Cheers
        Richard

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

          @maxgyver what kinematics does your machine use? We've experienced some issues converting one of our CoreXY machines to use the 1HCL board and motors+encoders; and we don't know whether it is as issues with this particular machine+motors+encoders or a more general problem with closed loop control of coupled motors.

          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

          A Former User? MaxGyverundefined 3 Replies Last reply Reply Quote 0
          • A Former User?
            A Former User @dc42
            last edited by

            @dc42
            I have cartesian printers.
            4 y motors
            2 y motors
            1x motor

            X and Y working with a closed loop system would be nice.

            Cheers
            Richard

            1 Reply Last reply Reply Quote 0
            • samlogan87undefined
              samlogan87
              last edited by

              @T3P3Tony is there any news on these boards? Still keen to get 2

              Custom Core-XY

              1 Reply Last reply Reply Quote 0
              • MaxGyverundefined
                MaxGyver @dc42
                last edited by

                @dc42 My Kinematics are IDEX (Dual Markforged aka Haq XY) with dual Y-Motors.

                ; Kinematics
                M669 K11 Y1:1:0:-1	; Matrix mapping for Axis - X:Y:Z:U
                

                1625213528679-example_setup.png

                So far, I had no mayor issues converting to closed loop.

                1 Reply Last reply Reply Quote 0
                • A Former User?
                  A Former User @dc42
                  last edited by

                  @dc42

                  A curious european company wanna try 1HCL.

                  Please provide us some information for further planning.
                  We need the 1HCL but we can´t wait another half a year with testing etc.

                  KR
                  Richard

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

                    @gruna-studio a first small production run is currently under way.

                    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

                    A Former User? tristanryerparkeundefined 2 Replies Last reply Reply Quote 1
                    • A Former User?
                      A Former User @dc42
                      last edited by

                      @dc42
                      Nice, Can I pre order some?

                      I need to install the 1HCL with an external encoder because my machines have a double shaft on x axis.
                      So I can do a documentation how to place the magnetic encoder install on this board... the documentation says, that for this there will be a description in future.
                      Let me know.
                      Cheers
                      Richard

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

                        @gruna-studio so far the best results we've seen have been using motors with built-in encoders. We're also testing some motors with external encoders, but we've had some difficulties with one of them.

                        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

                        A Former User? 1 Reply Last reply Reply Quote 0
                        • tristanryerparkeundefined
                          tristanryerparke @dc42
                          last edited by tristanryerparke

                          @dc42 I’d like to order some as well when they become available. Please let us know if we can pre-order.
                          Also, could you describe in more detail the issues with closed loop corexy that you mentioned?
                          I would be willing to help beta test the corexy functionality if that would help.
                          Thanks and look forward to the boards,
                          Tristan

                          1 Reply Last reply Reply Quote 0
                          • A Former User?
                            A Former User @dc42
                            last edited by

                            @dc42
                            Ok I understand.
                            For me it's no option to change the style of the x axis (double shaft nema17) I must work with an external encoder.
                            I'm happy to hear that duet will sell this board in the next months.
                            Would like to have a few of this little fun maker.
                            Please give us a sign when we can order some.
                            Thanks a lot
                            Richard

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

                              The first small production run of the EXP1HCL is currently undergoing testing by our assemblers. We should know more on Monday.

                              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

                              A Former User? 2 Replies Last reply Reply Quote 1
                              • A Former User?
                                A Former User @dc42
                                last edited by

                                @dc42
                                Sounds great!!!
                                Thanks for updating us

                                Cheers
                                Richard

                                1 Reply Last reply Reply Quote 0
                                • samlogan87undefined
                                  samlogan87
                                  last edited by

                                  I am keen to get two as well. I have the 48v power supply just need the boards now

                                  Custom Core-XY

                                  A Former User? 1 Reply Last reply Reply Quote 0
                                  • A Former User?
                                    A Former User @samlogan87
                                    last edited by

                                    @samlogan87
                                    what is the benefit of 48 volt?

                                    cheers
                                    richard

                                    samlogan87undefined 1 Reply Last reply Reply Quote 0
                                    • samlogan87undefined
                                      samlogan87 @A Former User
                                      last edited by

                                      @gruna-studio you are able to run it much faster

                                      Custom Core-XY

                                      A Former User? 1 Reply Last reply Reply Quote 0
                                      • A Former User?
                                        A Former User @samlogan87
                                        last edited by A Former User

                                        @samlogan87
                                        really? the motors can drive faster?

                                        since two years I´m working with 3d printers and duet and I never heard about it. haha

                                        Is there a good summary from Duet?

                                        Today is "1HCL-Monday". !!!!

                                        cheers richard

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

                                          @gruna-studio driving stepper motors at the desired current depends on having enough driver supply voltage to overcome the back EMF of the motors, which increases with speed. It's especially important with high inductance and high current motors. You can estimate the voltage needed using the calculator at https://www.reprapfirmware.org/emf.html.

                                          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

                                          A Former User? 3 Replies Last reply Reply Quote 0
                                          • A Former User?
                                            A Former User @dc42
                                            last edited by

                                            @dc42
                                            ok thanks a lot!

                                            1 Reply Last reply Reply Quote 0
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