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    Duet3D 1HCL - Closed Loop Controller Beta test

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    • A Former User?
      A Former User @T3P3Tony
      last edited by

      @t3p3tony

      yeeeeah!
      thanks a lot.

      So there is the first question.
      Is there any experience with specific encoders I could use?

      f300a153-a5d4-49da-a5a1-31cdbaf9707d-image.png

      Is this an actual information?

      If there is no picture yet, I can provide you some good ones and other documentations.

      Thanks a lot
      Richard

      T3P3Tonyundefined dc42undefined 2 Replies Last reply Reply Quote 0
      • samlogan87undefined
        samlogan87
        last edited by

        @T3P3Tony awesome. Sent you an email regarding getting some boards

        Custom Core-XY

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        • T3P3Tonyundefined
          T3P3Tony administrators @A Former User
          last edited by

          @gruna-studio the SPI connected encoders are not yet fully supported. we have done some limited testing but for now I recommend using quadrature encoders.

          www.duet3d.com

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          • dc42undefined
            dc42 administrators @A Former User
            last edited by dc42

            @gruna-studio the encoders we have had most success with are the 1000 PPR (4000 CPR) ones built-into some 1.8deg stepper motors. There are some examples at https://www.omc-stepperonline.com/closed-loop-stepper-motor/.

            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
            • A Former User?
              A Former User @dc42
              last edited by

              @dc42

              OK... nice to know. Can´t wait to install it. 🙂

              My X-axis works with an double shaft nema 17 who has belts on both ends. So I can´t ( at the moment) install the a new motor. How about the encoder of stepper online. I guess they´re quiet similar to the build in encoder.. or am I completly wrong?
              May it´s a cheaper solution to upgrade specific axis.

              https://www.omc-stepperonline.com/encoder/

              This encoder would fit nicely in my system but I`m not sure if this is working in the same way as the built in encoder of stepper online nemas.

              cheers Richard

              https://www.omc-stepperonline.com/download/HKT30-32.pdf
              56870398-1ff5-41dc-ae6c-101f6e3ee781-image.png

              alankilianundefined 1 Reply Last reply Reply Quote 0
              • alankilianundefined
                alankilian @A Former User
                last edited by alankilian

                @gruna-studio Can you find some place that verifies you can get a 4,000 counts-per-revolution encoder? I looked at their web page and data sheet and I don't get a solid feeling that's true, but it might be true.

                I see CPR and LinesPerRev/PulsesPerRev (LPR/PPR) used incorrectly all the time.

                If you can only get a 1000 CPR encoder that's going to be too low a resolution to get you good performance. If the data sheet says CPR but they really mean LPR than it's OK, but without buying and testing one you won't know.

                SeemeCNC Rostock Max V3 converted to V3.2 with a Duet2 Ethernet Firmware 3.2 and SE300

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

                  @alankilian https://www.rls.si/eng/products/rotary-magnetic-encoders

                  But I´m no really sure with the configurations there.
                  Share it if you do one if you want.

                  I think they have all we need in future.

                  Concerning the stepper online encoder. I think I´ll ask them and let you know.

                  Cheers
                  Richard

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                  • dc42undefined
                    dc42 administrators @alankilian
                    last edited by dc42

                    @alankilian a 1000 PPR (pulses-per-rev) quadrature encoder provides 4000 CPR (counts per rev, better called transitions per rev). The EXP1HCL board uses all 4000 transitions. The 4 transitions that occur in the time of 1 pulse probably won't be as evenly spaced as the pulses, but using them still provides a benefit over using just the pulse count.

                    @gruna-studio if the encoder spec is 1000 PPR (not 1000 CPR) then the resolution should be OK. We've only tried one system using a separate encoder (not from stepperonline) and we've had poor results; but that may be caused by something else on that machine. If you do use a separate encoder, you need to make sure there is no added backlash in the encoder caused by it being separate from the motor. So the mounting of the encoder on the shaft and the encoder body on the motor need to be rigid. As long as the EXP1HCL is in beta test and not a fully released product, we'd rather you use stepper motors with integrated encoders, so that we can be fairly sure that any issues you report are not caused by poor coupling of the motor to the encoder.

                    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 0
                    • A Former User?
                      A Former User @dc42
                      last edited by

                      This post is deleted!
                      1 Reply Last reply Reply Quote 0
                      • A Former User?
                        A Former User @dc42
                        last edited by

                        @dc42
                        I just got my boards! thanks a lot to providing me in this early stage. 😄
                        I saw there are some changes to the version 0.3. Is there already a wiring diagramm?
                        cheers
                        Richard

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

                          @gruna-studio latest EXP1HCL documentation is at https://docs.duet3d.com/en/Duet3D_hardware/Duet_3_family/Duet_3_Expansion_1HCL.

                          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

                          Alex.crundefined 1 Reply Last reply Reply Quote 0
                          • Alex.crundefined
                            Alex.cr @dc42
                            last edited by

                            @dc42 @T3P3Tony

                            Any idea when 1HCL will be available to US resellers?

                            Voron2.4/Duet3 SBC+6HC+3HC+1LC+1HCL(x2) - Delta/Duet2 Wifi - CubePro/Duet2 Wifi+Duex5 - Laser/Duet3 Mini5+ - Cel Robox - U̶p̶3̶0̶0̶+/D̶u̶e̶t̶3̶ ̶6̶H̶C̶+̶LC1̶ - F̶T̶-̶5̶/̶D̶u̶e̶t̶2̶ ̶W̶i̶f̶i̶ - S̶o̶l̶i̶d̶o̶o̶d̶l̶e̶

                            T3P3Tonyundefined 1 Reply Last reply Reply Quote 0
                            • T3P3Tonyundefined
                              T3P3Tony administrators @Alex.cr
                              last edited by

                              @alex-cr we have orders in from at least Filastruder (need to check with the other ones). I hope we will start shipping reseller orders to them next week.

                              www.duet3d.com

                              Alex.crundefined cloudseedsundefined 2 Replies Last reply Reply Quote 2
                              • Alex.crundefined
                                Alex.cr @T3P3Tony
                                last edited by

                                @t3p3tony

                                Much appreciated!

                                Voron2.4/Duet3 SBC+6HC+3HC+1LC+1HCL(x2) - Delta/Duet2 Wifi - CubePro/Duet2 Wifi+Duex5 - Laser/Duet3 Mini5+ - Cel Robox - U̶p̶3̶0̶0̶+/D̶u̶e̶t̶3̶ ̶6̶H̶C̶+̶LC1̶ - F̶T̶-̶5̶/̶D̶u̶e̶t̶2̶ ̶W̶i̶f̶i̶ - S̶o̶l̶i̶d̶o̶o̶d̶l̶e̶

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                                • cloudseedsundefined
                                  cloudseeds @T3P3Tony
                                  last edited by

                                  @t3p3tony Anything for Germany/Europe? I am currently testing 1XD with SERVO42C but that makes little sense if 1HCL is available soon.

                                  T3P3Tonyundefined 1 Reply Last reply Reply Quote 0
                                  • madmattcoundefined
                                    madmattco
                                    last edited by

                                    Apologies if this was addressed before but I was wondering why the choice of using the 5160 and it's built-in encoder input was not used?

                                    dc42undefined 1 Reply Last reply Reply Quote 0
                                    • T3P3Tonyundefined
                                      T3P3Tony administrators @cloudseeds
                                      last edited by

                                      @cloudseeds we have dispatched some to Compass-DHM and Dold Mechatronic , I hope both of them will list them soon.

                                      www.duet3d.com

                                      DHM-onlineundefined cloudseedsundefined 2 Replies Last reply Reply Quote 0
                                      • dc42undefined
                                        dc42 administrators @madmattco
                                        last edited by

                                        @madmattco the EXP1HCL uses the TMC2160A because it supports the direct coil current control that we need for closed loop node. The TMC2160A does not support an encoder. In any case, reading the encoder using the built-in encoder support in the MCU is faster than reading from the stepper driver over SPI.

                                        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

                                        1 Reply Last reply Reply Quote 0
                                        • martin7404undefined
                                          martin7404
                                          last edited by

                                          I have a question can I use mini with 1HCL board ?

                                          Muldex IDEX Duet2+Duex5
                                          Custom CoreXY 600x400 Hemera , Duet3+Toolboard+1HCL closed loop
                                          Sapphire Pro with Duet2, with closed-loop motors
                                          custom high temp E3D tool changer with Duet2+Duex

                                          T3P3Tonyundefined 1 Reply Last reply Reply Quote 0
                                          • T3P3Tonyundefined
                                            T3P3Tony administrators @martin7404
                                            last edited by

                                            @martin7404 yes you can use it with any of the Duet 3 Mainboards (6HC, 6XD and Mini 5+)

                                            www.duet3d.com

                                            CNCModellerundefined 1 Reply Last reply Reply Quote 0
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