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6Dof Stewart Platform Motion Simulator

Discussion in 'DIY Motion Simulator Projects' started by DocLove, Jan 19, 2016.

Page 2 of 3
  1. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
    3DOF, DC motor, JRK
    Thanks so much for that @DocLove, I have linked your 6DOF model to the SkecthUp FAQ and if you do update it I will relink it then: http://www.xsimulator.net/community/faq/how-to-animate-sketchup-3d-model-with-simtools.209/

    It is a great start for others to have a play with!
    noorbeast, Jan 22, 2016
    #21
  2. SeatTime

    SeatTime Well-Known Member

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    My Motion Simulator:
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    Nice work:thumbs , but don't spend too much time re-inventing the wheel in sketchUp :). The real work in building a 6DOF is yet to come.
    • Like Like x 1
    • Agree Agree x 1
    SeatTime, Jan 22, 2016
    #22
  3. DocLove

    DocLove New Member

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    Thanks for the confidence everyone :) Here's a newer version of the platform. There was a lot wrong with my last one :p

    Attached Files:

    DocLove, Jan 23, 2016
    #23
  4. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
    3DOF, DC motor, JRK
    Many thanks for that @DocLove, I have updated the FAQ SketchUp link to your new model.
    noorbeast, Jan 23, 2016
    #24
  5. DocLove

    DocLove New Member

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    So I've decided that I will use AC motors, Gearboxes, and VFD's for my Stewart Platform. It seems like there's a formula for picking parts based on platform wight but I can't find any info on it. Any help would be much appreciated.
    DocLove, Jan 23, 2016
    #25
  6. DocLove

    DocLove New Member

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    Meanwhile I've been tweaking the design to get better movement. Something doesn't look right to me though. Any thoughts?
    • Like Like x 1
    DocLove, Jan 26, 2016
    #26
  7. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
    3DOF, DC motor, JRK
    I think it would help if the model was turned around so you are viewing its movements from the back going in the same direction as the car.

    It seems to me that sway may be inverted.
    • Like Like x 1
    • Agree Agree x 1
    noorbeast, Jan 26, 2016
    #27
  8. SeatTime

    SeatTime Well-Known Member

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    My Motion Simulator:
    AC motor, Motion platform
    Do you have yaw enabled? Turn it off if you do.
    • Like Like x 1
    SeatTime, Jan 26, 2016
    #28
  9. DocLove

    DocLove New Member

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    Thanks guys turned the yaw off and inverted the sway at lunchtime, everything seems much smoother now. I'll try to get another video up of the result after work :)
    DocLove, Jan 26, 2016
    #29
  10. DocLove

    DocLove New Member

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    With a better view too lol
    • Like Like x 1
    DocLove, Jan 26, 2016
    #30
  11. speedy

    speedy Well-Known Member

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    My Motion Simulator:
    3DOF, AC motor, Arduino, Motion platform
    Also make sure that you lean outward with curves not inward like a motorcycle ...
    speedy, Jan 27, 2016
    #31
  12. speedy

    speedy Well-Known Member

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    My Motion Simulator:
    3DOF, AC motor, Arduino, Motion platform
    you have a list of a 6DOF projects in the FAQ with AC and DC motors ...
    you can start from there then join them at the end .:cool:
    speedy, Jan 27, 2016
    #32
  13. DocLove

    DocLove New Member

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    Thanks for the links speedy, still working out all the math for it but I've been getting a a much better idea of what I'm looking for.
    DocLove, Jan 27, 2016
    #33
  14. DocLove

    DocLove New Member

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    Here's the video of my platform with the changed settings, as well as my Axis Assignments in SimTools. I think it looks like it's rolling the wrong way because the track isn't flat.

    • Informative Informative x 1
    Last edited: Jan 27, 2016
    DocLove, Jan 27, 2016
    #34
  15. bruce stephen

    bruce stephen Hammer doesnt fix it, must be electrical

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    My Motion Simulator:
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    good work
    bruce stephen, Jan 27, 2016
    #35
  16. Blame73

    Blame73 Well-Known Member

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    My Motion Simulator:
    2DOF, DC motor, Arduino, Motion platform
    sway works the opposite way. Is inverted ( at least in my seat mover it is...)
    Blame73, Jan 27, 2016
    #36
  17. DocLove

    DocLove New Member

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    Shopping list for my scale model: Purchased on Amazon
    • J-Deal® 10x Pcs SG90 Micro Servo Motor TowerPro 9G RC Robot Helicopter Airplane Boat Controls
    • RobotLinking 2015 New Uno R3 Project Ultimate Starter Kit For Arduino UNO R3 Mega2560 Mega328 Nano including Uno R3
    • Great Planes All Thread Rod (Set of 12), 4-40x12"
    • Du-Bro 900 4-40 Heavy Duty Ball Link (12-Pack)
    • Like Like x 2
    DocLove, Jan 29, 2016
    #37
  18. DocLove

    DocLove New Member

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    I can print out the specialty parts at the place next door to my work :p
    DocLove, Jan 29, 2016
    #38
  19. DocLove

    DocLove New Member

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    Electronics came in today, spent a couple hours figuring it out and hooking up wires... Much progress has been made XD

    KIMG0122.jpg KIMG0123.jpg KIMG0125.jpg
    • Like Like x 2
    DocLove, Feb 3, 2016
    #39
  20. Kirk

    Kirk Member

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    My Motion Simulator:
    2DOF, DC motor
    With that many servos, it's hard not to recommend Adafruit's 16 channel servo shield, or any of the clones.
    http://www.aliexpress.com/item/Free...erface-for-Arduino-Raspberry/32551764422.html
    ($3.28 w/ free shipping on AliExpress)

    https://www.adafruit.com/products/1411
    ($17.50 from Adafruit, shipping is extra, but it's the genuine thing).

    They are easy to connect up and much easier to code for, plus it's easier to configure a secondary power source to avoid brown-out on your Arduino.

    Anyway, when using I2C to control the servos, you basically just set the desired positions, no need to babysit the servos, and no need for jumper wires, the headers are all setup for attaching servos directly.
    • Winner Winner x 1
    • Informative Informative x 1
    Kirk, Feb 4, 2016
    #40
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