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    Orbiter 2.0 stepper motor turns a little, then buzzes.

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    • imonseiundefined
      imonsei
      last edited by

      Hi guys.
      I got myself a headscratcher I can't really figure out.

      My problem is that when I try to extrude, I can extrude about 4mm, and then the motor starts buzzing, and stops extruding/turning. If I then try and retract, I can retract about 4mm and then then the buzzing starts again.

      I have this setup
      Board: Duet 3 MB6HC (MB6HC)
      Firmware: RepRapFirmware for Duet 3 MB6HC 3.4.4 (2022-10-20)

      The documentation for the Orbiter 2.0 states the following Gcodes needs to be set for Reprap firmware.
      I put them last in the config.g file so I'm sure they will be set, in case I accidentally set something above that could overwrite.
      The config.g file is also attached in case there is something relevant.config.g
      M350 E16 I1
      M92 E690
      M203 E7200
      M566 E300
      M201 E10000
      M906 E1200 I10
      M572 D0 S0.02
      M207 S1.5 F7200 Z0.2

      I have heated the nozzle to 200 and have pla on the spool. I can push some through by hand, when pushing in the lever.

      The Orbiter 2.0 didn't come with a connector that was correct for the board, so I had to crimp one myself. I'm fairly certain the order of the wires is correct, because it does move the filament forward when i tell it to extrude, and backwards when I retract (until buzz-stop)

      Anybody have an idea, or know what I should read up on?

      droftartsundefined 1 Reply Last reply Reply Quote 0
      • droftartsundefined
        droftarts administrators @imonsei
        last edited by

        @imonsei what is the motor model number? 1.2A (M906 E1200) seems high; my Orbiter 1.5 runs on 600mA from memory. Is the motor getting hot? Otherwise, it sounds like something is blocking it. Have you tried running it without filament?

        Ian

        Cartesian bed-slinger with Duet 3 Mini 5+ WiFi and 1LC : RRP Fisher Delta v1 with Duet 2 Maestro : TronXY X5S with Duet 3 MB6HC and Roto toolboard

        imonseiundefined 1 Reply Last reply Reply Quote 0
        • imonseiundefined
          imonsei @droftarts
          last edited by

          @droftarts
          You were correct. I took the motor out of the orbiter and tested. It turned happily when no extruder was attached.
          Opened up the planetary gears and did an inspection. Everything looked well lubed and turned easily.
          Put it together again, and now it spun as it is supposed to.
          Thank you 🙂

          About the 1.2A - no, it doesn't get hot. It's in the documentation for the unit, so I hope they know what they are doing.

          o_lampeundefined 1 Reply Last reply Reply Quote 0
          • imonseiundefined imonsei marked this topic as a question
          • imonseiundefined imonsei has marked this topic as solved
          • o_lampeundefined
            o_lampe @imonsei
            last edited by

            @imonsei said in Orbiter 2.0 stepper motor turns a little, then buzzes.:

            About the 1.2A - no, it doesn't get hot. It's in the documentation for the unit, so I hope they know what they are doing.

            No they don't necessarily. I have a similar motor which is labelled 1.8A/phase, but in reality it works best at 0.8-0.9A

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