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    Smart Stepper?

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    • 3dmntbighkerundefined
      3dmntbighker
      last edited by

      Anybody working on using these with a Duet?

      http://misfittech.net/nema-17-smart-stepper/

      Scratch built CoreXY with Maestro
      Heavily modified Ender 3 with Maestro
      MPCNC work in progress with Duet WiFi

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      • madude91undefined
        madude91
        last edited by

        I am interested to know how they work with Duet too.

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        • dc42undefined
          dc42 administrators
          last edited by dc42

          I have been unable to find any user manual or specification for this device, so I can't tell whether it is compatible. I have posted a question at https://groups.google.com/forum/#!topic/smart-stepper/a3IRc89yG5E.

          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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          • dc42undefined
            dc42 administrators
            last edited by

            I have had a reply to my question. It looks like you should be able to use the Smart Stepper connected to the expansion connector or to the CONN__LCD connector. Connect the step, direction, enable and ground pins on the Smart Stepper in the obvious way. Connect the VIN pin of the Smart Stepper to +3.3V on the Duet. In the M569 command for that driver, I suggest T1:2:20:0. If you get missed steps, you may need to increase one or more of those values.

            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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            • vmario89undefined
              vmario89
              last edited by

              it's an old topic but for all who found this: https://github.com/Misfittech/nano_stepper/issues/40

              i documented some stuff for wiring up the smart steppers with a Duet 2. Until yet i had no problems with missed steps yet. I did not configure the T parameter.

              by the way what are the default values for step pulse width, step pulse interval, direction setup time and direction hold time ?

              vmario89 created this issue in Misfittech/nano_stepper

              closed Duet Board Support #40

              zaptaundefined dc42undefined 2 Replies Last reply Reply Quote 0
              • zaptaundefined
                zapta @vmario89
                last edited by

                @vmario89, what are the advantages of having that smart controller between the duet and the motor?

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                • dc42undefined
                  dc42 administrators @vmario89
                  last edited by

                  @vmario89 said in Smart Stepper?:

                  by the way what are the default values for step pulse width, step pulse interval, direction setup time and direction hold time ?

                  As fast as the Duet can generate them, which is well under 1us. The Trinamic drivers need only about 100ns.

                  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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