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    U-axis without limit

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    • Phaedruxundefined
      Phaedrux Moderator
      last edited by

      Sorry was just trying to be funny not have an argument. Was just trying to help.

      Z-Bot CoreXY Build | Thingiverse Profile

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      • Phaedruxundefined
        Phaedrux Moderator @tntjet
        last edited by

        @tntjet said in U-axis without limit:

        im looking for an unlimited rotational axis . as far as i understand Im required to compile my own firmware to make this happen , I am not capable of compiling firmware can anybody help?

        I don't know why you assume that. You could install 3.2 beta 4 right now if you wanted to test with it.

        @tntjet said in U-axis without limit:

        the issue im having is my axis is named U (it works with the pendant this way) changelog spesifies A,B,C,D.

        From my reading of the changelog, yes I think you would have to use ABCD for a rotational axis. How does it conflict with the pendant?

        Z-Bot CoreXY Build | Thingiverse Profile

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        • tntjetundefined
          tntjet
          last edited by

          @Phadrux The pendant only recognises the axis if it is named U. A,B,C or D wont work

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          • Phaedruxundefined
            Phaedrux Moderator @tntjet
            last edited by

            @tntjet Do you have a link to the pendant?

            Z-Bot CoreXY Build | Thingiverse Profile

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            • tntjetundefined
              tntjet
              last edited by

              @Phaedrux

              https://forum.duet3d.com/topic/11389/cnc-style-pendant/2?_=1607728006898

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              • cpiriusundefined
                cpirius
                last edited by

                I'm having trouble with this as well for an openpnp machine. Trying to move from using an "extruder" to a rotary axis for part rotation. But whether I define:

                M584 X0 Y2 Z1 A3
                
                or
                
                M584 X0 Y2 Z1
                M584 U3 R1
                
                or
                
                M584 X0 Y2 Z1
                M584 A3
                

                My rotary axis, either A or U, still only lets me move from 0 - 200 position. There is no infinite rotation.

                Is there something beyond configuring the axis as a rotation axis to remove the limits?

                Thanks

                Stephen6309undefined 1 Reply Last reply Reply Quote 0
                • Stephen6309undefined
                  Stephen6309 @cpirius
                  last edited by

                  @cpirius AFAIK, you have to define it as an extruder. Extruders have no limits on distance.

                  tntjetundefined 1 Reply Last reply Reply Quote 0
                  • tntjetundefined
                    tntjet @Stephen6309
                    last edited by

                    @Stephen6309 they certainly do have unlimited rotation , unfortunately not helpful for cnc applications nor using a pendant.

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                    • dc42undefined
                      dc42 administrators
                      last edited by

                      I have added this to my list to look into for RRF 3.3.

                      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

                      tntjetundefined cpiriusundefined 2 Replies Last reply Reply Quote 0
                      • tntjetundefined
                        tntjet @dc42
                        last edited by

                        @dc42 thank you David.

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                        • cpiriusundefined
                          cpirius @dc42
                          last edited by

                          @dc42 Awesome, thanks 🙂

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                          • RandyL00123undefined
                            RandyL00123
                            last edited by

                            @wuem said in U-axis without limit:

                            imit. Ev

                            https://duet3d.dozuki.com/Wiki/Gcode#Section_M584_Set_drive_mapping
                            Rn allows you to set an axis as rotational. Like printing on a pot can maybe?

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                            • rryundefined
                              rry
                              last edited by

                              Hi David. Thank your for good job!

                              Can someone did continues rotation?
                              I expect something like this:
                              M584 X1 R1; set X axis as continues rotational
                              //on working program
                              G1 X F100 ; rotate X continuesly with speed 100 or best way to use some new M code for rotation
                              G1 Y10 F200;
                              ...
                              G1 X F300; after Y moved to 10 and some other things rotate X with speed 300
                              G1 Y-10 F200;
                              G1 X F0; after Y moved to -10 stop X rotation

                              or may be somebody can suggest working solution, then I need continues rotation on pulling tape or similar.
                              One solution I see to use analog output connected to external drive with analog speed control like Spindle.
                              Thank you

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                              • o_lampeundefined
                                o_lampe @rry
                                last edited by

                                @rry
                                I guess for combined XY moves you have to define an angle for X, not just a speed.
                                EG. positive angle = clockwise, neg. angle = CCW

                                G1 X1000 Y10 F100 ; turn X axis 10 times (100rad = 1 turn) while moving Y 10mm
                                
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                                • rryundefined
                                  rry @o_lampe
                                  last edited by

                                  @o_lampe
                                  Yes, you are right, my g-code is wrong, i only tried to show idea that for continues rotation distance does not matter, you need only speed and direction.
                                  seem the most correct way will use new M code for that purpose for example:
                                  Mxxx Xnnn; start to rotate axis X with speed xxx (non blocking command!)
                                  Mxxx A-600; rotate axis A (setup A as continuesly rotation in config) with speed 600 counter-clockwise

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