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Showroom Compact AC Servo 6DOF Rotary Stewart platform

Discussion in 'DIY Motion Simulator Projects' started by knaufinator, May 26, 2020.

  1. GettinBetter

    GettinBetter Magna Merchant Gold Contributor

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    My Motion Simulator:
    6DOF
    This is taking longer than expected, mainly because I have a motorbike & car project running as well... here's my progress.
    The base was based on Smittys' shape, but went with more or less your arm design because I couldn't justify CNC costs vs making them myself.

    IMG_20240204_181636.jpg

    IMG_20240204_181648.jpg

    IMG_20240210_171716.jpg

    I also saw one of the guys on your thread put the servos on the base which I also liked, and plan to do the same.

    IMG_20240408_142653.jpg

    IMG_20240408_164906.jpg

    IMG_20240303_160143.jpg

    I'm considering placing all the servo control gear underneath but for problems with any maintenance in the future so not decided on that one yet.

    So thanks again Chris, all made possible by your generosity in providing decent open source info.
    Regards
    GB
    • Like Like x 3
  2. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    Great progress :thumbs

    It would be best if you started your own build thread and cover details like changes for pragmatic reasons, and how you went about it, what you chose to use and why, that way other future members will similarly benefit, without cluttering @knaufinator's build thread.
  3. GettinBetter

    GettinBetter Magna Merchant Gold Contributor

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    OK will do, I did wonder whether I should or not, just didn't want to steal Chris' thunder.
    • Like Like x 2
  4. knaufinator

    knaufinator Active Member

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    My Motion Simulator:
    AC motor, 6DOF
    nice work my dude!
  5. GettinBetter

    GettinBetter Magna Merchant Gold Contributor

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    Hi Chris, Got my rig powered up, and am trying to config it. Can't do too much yet as I haven't wired the E-stop buttons yet, and feel after re-reading your posts, you make a point of fitting them, and I know I really should.

    With respect to the numbering of the motors, I've just installed Simtools v3, and the image in the setup window shows motor No.1 to be approx 1 o'clock , with motor No.2 at 3 o'clock, No.3 at 5 o'clock, and so on. Is this how you laid yours out? Looking from the rear, forward.

    Then these should marry up to the motor numbers on the control circuit board?
  6. knaufinator

    knaufinator Active Member

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    I have never got SimTools v3 to work, I was given early access back in the day but could not figure it out and more or less was offended that it did not work backwards compatible with my old game plugins, so I abandoned even trying. From your description no, the motors in simtools do not align with the how they did it in V2, where v2 was sending generic scaled x,y,z, rx,ry,rz values to the PCB, the PCB then was doing the inverse kinematics to figure out where the motors should go. Do we have any V3 users in here??? how can we emulate v2 outputs in v3?
  7. GettinBetter

    GettinBetter Magna Merchant Gold Contributor

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    Thanks for the speedy reply. :)
    Oh, I found V3 to be reasonably intuative. The 3D virtualisation suggests all is moving correctly, but the actual base is not moving in recognisable directions.

    But Ok, I still have V2 installed, I'll go back to that for initialisation.
    Would you be kind enough to advise what motor the No.1 IDC plug (on the circuit board) connects to, on the motor on the basebase? and IDC No.2 so I can deduce direction. I'm assuming they'll be in order?
    I need to start debugging from somewhere...this is a nice easy step.
  8. knaufinator

    knaufinator Active Member

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    My Motion Simulator:
    AC motor, 6DOF
    front right is 1, then clockwise till 6
    • Winner Winner x 1
  9. GettinBetter

    GettinBetter Magna Merchant Gold Contributor

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    Cracker. I'll get on it.