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Mini 6DOF Servo-Powered Motion Platform

Discussion in '3D Printing' started by Zed, May 16, 2018 at 15:34.

  1. Zed

    Zed VR Simming w/Vive

    Joined:
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    My Motion Simulator:
    2DOF, DC motor, JRK
    I drew this up and printed it to be able to experiment with 6 DOF platform control.

    The servo mounts fit Futaba S3003 and compatible servos. The bolt holes in the base to hold the petals together fit M3x8 screws. The bolts that hold the Traxxas links to the upper frame and also hold the upper frame together are M3x20, and the bolts that hold the Traxxas links to the servo arms are M3x12.

    You'll need support to hold the shelf overhang where the pieces bolt together during printing.

    The pieces are drawn to fit in a 4x5x5" print volume.

    You just print three base pieces and three top pieces, and bolt them together to get a respectable-sized platform. The links I'm using are Traxxas 3645 Turnbuckles / Toe Links, 61 mm (pair) (http://a.co/0WOcN2x). They fit an M3 bolt just about perfectly.

    8FCF01ED-D1DA-478B-A1A7-D4C9D1BD6061.jpeg 29CA55DF-BE3B-4431-87A0-97D6C9C8E691.jpeg 18C97B84-CAA1-48EF-A777-706D3492876F.jpeg singlet.jpg 414A5F42-1593-4FA5-824A-750026556D6E.jpeg TopPiece.jpg

    The Traxxas links are 2 for $10 so $30 total. The servos are $11 each at Tower Hobbies.

    I’m really impressed by the Traxxas links. They swivel totally freely but have virtually no slop. I need to get this wired up now but can already tell it’s going to be precise as all hell. It’s totally not necessary for experimenting with @Thanos' AMC1280, but I might turn it into one of the ball bearing balance tables once I get done with testing.

    I printed a plate with a stand for a toy plane so now it has the ubiquitous model on top. Both a blank and pedestal insert are in the Inserts .zip. Here it is all mounted up with a toy plane model from Thingiverse (https://www.thingiverse.com/thing:1341481) printed at 65% scale. It has a pocket underneath that the post engages to hold it on the platform. The pedestal post is in the very center of the insert.

    5E6E3BFB-A4B6-48CA-83DF-8B48717378C8.jpeg 24406A47-234A-4D4D-8E36-AABE2198125F.jpeg

    Today I wire it up...

    Attached Files:

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    Last edited: May 20, 2018 at 16:20
  2. Jerry Atrick

    Jerry Atrick this is my sim Gold Contributor

    Joined:
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    My Motion Simulator:
    4DOF
    Nice job Zed, I will look forward to see it working.

    Jerry.
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  3. Zed

    Zed VR Simming w/Vive

    Joined:
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    My Motion Simulator:
    2DOF, DC motor, JRK
    @Jerry Atrick - I am kind of proud of it. Photos and .stl files posted.

    It’s trivially easy to build and I think will work like a champ. Haven’t powered it up yet though.

    If only building the real thing was this easy!
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  4. paulopsx2

    paulopsx2 Active Member

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    brasil
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    My Motion Simulator:
    2DOF, Arduino, Motion platform
    is it possible to create a "real" dof sim with this project? Something like a 1:1 scale ?

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