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    Radial coordinate system

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    • gnydick
      gnydick last edited by

      If I want to build a machine that moves to cover a circular area, but need it to be extremely thin, I would want a turntable and arm of some sort. Is that type of kinematic supported?

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      • Phaedrux
        Phaedrux Moderator last edited by

        You mean like a Polar coordinate printer?
        https://duet3d.dozuki.com/Wiki/ConfiguringRepRapFirmwarePolarPrinter

        Z-Bot CoreXY Build | Thingiverse Profile

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        • gnydick
          gnydick @Phaedrux last edited by

          @Phaedrux yes, thanks. Though I don't want to make a printer, I want to make something else entirely.

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          • Danal
            Danal last edited by

            I've also been working with an ESP32 motion controller that supports either conventional SCARA or turntable/arm (or Cartesian). Nowhere near as fancy as the Duet... but does great with two TMC drive chips for its specialized purpose.

            Full motion control, accel, deccel, etc. G-Code interpreter. Rho-Theta interpreter (for that circular stuff).

            If you have a project you don't want to fully discuss on the forum, email me:

            danal (dot) estes (at) gmail (dot) com

            You still don't have to reveal anything detailed... I can point you at the origin of the ESP32 controller that I'm talking about, and discuss my roadmap of planned refinements. Reasonably possible it might already do what you are seeking.

            Delta / Kossel printer fanatic

            gnydick 1 Reply Last reply Reply Quote 1
            • gnydick
              gnydick @Danal last edited by

              @Danal it's fine. I want to make my own self drawing sand table. Where the ball bearing draws patterns in the sand slowly over time.

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              • Danal
                Danal last edited by

                That's exactly what the ESP32 controller is for. A Sisyphus style sand table.

                Delta / Kossel printer fanatic

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                • Danal
                  Danal last edited by

                  IMG_0170 (2).jpeg

                  This is the scara version. Bar/turntable is also supported.

                  I built a prototype, and the movement works quite well... however, I can't seem to find a magnet/ball/sand combination that moves smoothly. I haven't had much time to try different combinations.

                  Delta / Kossel printer fanatic

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                  • Danal
                    Danal last edited by

                    Since this is not really Duet related, where is a good place to move this discussion?

                    Delta / Kossel printer fanatic

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

                      @Danal said in Radial coordinate system:

                      Since this is not really Duet related, where is a good place to move this discussion?

                      The Off Topic category, https://forum.duet3d.com/category/26/off-topic.

                      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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                      • Phaedrux
                        Phaedrux Moderator last edited by

                        How 'bout wider discussion?

                        Z-Bot CoreXY Build | Thingiverse Profile

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