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6DoF VR Flight Pit

Discussion in 'DIY Motion Simulator Projects' started by Historiker, Feb 18, 2019.

  1. Historiker

    Historiker Dramamine Adict Staff Member Moderator Gold Contributor

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    My Motion Simulator:
    DC motor, Arduino, Motion platform, 6DOF
    Thanks for the heads up, but without deadzone added the motors bounce back and forth like crazy.
  2. Historiker

    Historiker Dramamine Adict Staff Member Moderator Gold Contributor

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    My Motion Simulator:
    DC motor, Arduino, Motion platform, 6DOF
    It will be a few days before I can get back to the project and hook up the electronics again. I did get something done today though:

    IMG_20190401_124003310.jpg

    IMG_20190401_130212875.jpg

    IMG_20190401_130336019.jpg

    IMG_20190401_130346251.jpg


    IMG_20190401_173522749.jpg


    As you can see, I made a slight math error. My motors are too far in, I do not have any angle to the connecting rods. I might (ok, will have to) move them out and add a bit to the outer edge for mounting holes.
    • Like Like x 3
  3. SilentChill

    SilentChill Problem Maker

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    My Motion Simulator:
    DC motor, Arduino, Motion platform, 6DOF
    Is that not be because you have the pwmmin set at 50 ? Just a thought , what ever works I guess :thumbs
    • Like Like x 1
  4. Historiker

    Historiker Dramamine Adict Staff Member Moderator Gold Contributor

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    My Motion Simulator:
    DC motor, Arduino, Motion platform, 6DOF
    Would that cause it? I will check it out tonight, thanks Craig!
  5. Historiker

    Historiker Dramamine Adict Staff Member Moderator Gold Contributor

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    My Motion Simulator:
    DC motor, Arduino, Motion platform, 6DOF
    @SilentChill I will be in Europe this summer, and there is a small chance that I will be in your neck of the woods in June and if I am I will find you and give you a giant hug! No wobblies with zero Pwmmin!hug:
    • Friendly Friendly x 1
  6. Historiker

    Historiker Dramamine Adict Staff Member Moderator Gold Contributor

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    My Motion Simulator:
    DC motor, Arduino, Motion platform, 6DOF
    The rig is up and running. Manual movements are great, or seem so. Just need to work on syncing all DoFs right now. They all seem to work though. Nifty :)

    Tried the DCS plugin but movements are jerky and not coordinated. There is some amount of Saberteething to expect though :D
    • Like Like x 3
  7. BondeX

    BondeX Active Member

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    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino, 6DOF
    Video Please please please....
  8. Historiker

    Historiker Dramamine Adict Staff Member Moderator Gold Contributor

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    My Motion Simulator:
    DC motor, Arduino, Motion platform, 6DOF
    Soon :) The movement is still very twitchy, working on that now.
  9. Historiker

    Historiker Dramamine Adict Staff Member Moderator Gold Contributor

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    My Motion Simulator:
    DC motor, Arduino, Motion platform, 6DOF
    Fixed the jerkiness (is that a word?) by increasing PID to 4. I will try reducing it one step at a time to see if a lower value works as well.

    Really, everything I am learning is from @SilentChill 's posted experience. Really need to hunt him down and give him "the hug" :D
    • Funny Funny x 1
  10. Historiker

    Historiker Dramamine Adict Staff Member Moderator Gold Contributor

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    My Motion Simulator:
    DC motor, Arduino, Motion platform, 6DOF
    MOTION!



    Movement is a bit jerky due to my ability to slide the little...er...sliders back and forth :)

    Oh, I did do a test with me sitting on it. A couple of things....ouch and Ouch! :D Surge and sway are very very very quick.
    • Like Like x 5
    • Winner Winner x 2
  11. Historiker

    Historiker Dramamine Adict Staff Member Moderator Gold Contributor

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    My Motion Simulator:
    DC motor, Arduino, Motion platform, 6DOF
    Now I just have to mount my seat, arms, rudder mount.....those things.

    Also did some testing in X-Plane 11 and DCS, both worked pretty well. Still need some fine tuning but I am impressed.
    • Like Like x 2
  12. SilentChill

    SilentChill Problem Maker

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    My Motion Simulator:
    DC motor, Arduino, Motion platform, 6DOF
    • Like Like x 1
  13. Historiker

    Historiker Dramamine Adict Staff Member Moderator Gold Contributor

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    My Motion Simulator:
    DC motor, Arduino, Motion platform, 6DOF
    I downloaded that yesterday but have not yet gotten around to playing with it. I did read the thread though
  14. Historiker

    Historiker Dramamine Adict Staff Member Moderator Gold Contributor

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    My Motion Simulator:
    DC motor, Arduino, Motion platform, 6DOF
    No work will be done on the rig tonight....its my wife's birthday....er...kind of forgot about that. Shhhh, dont mention that to her :D
    • Like Like x 1
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  15. SilentChill

    SilentChill Problem Maker

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    My Motion Simulator:
    DC motor, Arduino, Motion platform, 6DOF
    You got it moving nicely so shes allowed some of your time :D
    • Friendly Friendly x 1
  16. Historiker

    Historiker Dramamine Adict Staff Member Moderator Gold Contributor

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    My Motion Simulator:
    DC motor, Arduino, Motion platform, 6DOF
    It's ALIVE!!!!

    Pretty much finished. I still need to install the 12v relays; 30amp for the power supplies and a 200amp main for the battery to the Saberteeth.

    Spent a hour or so flying around in DCS, motion is a bit jerky/grainy but I have not played around much with axis settings/smoothing etc. I did test motion with PID set from 1-4 but did not feel a difference. Need to work on the smooth start settings as well. When I flip between game window and Simtools settings it makes a wild jump back to center each time. Hopefully I can get this movement less violent ;)

    The base steel frame in all its glory (picture Vana White waving her hand)

    IMG_20190406_102235889.jpg

    A comfy office chair mounted on the frame to form around my rear...aspect. The stock mounting system is very handy for this. And I drilled many holes to adjust my CG just in case my calculations are off. (They did not seem to be!)

    IMG_20190406_105027825.jpg

    I added a board between the seat and the frame so I could adjust height/angle, etc.

    IMG_20190406_105032444.jpg

    IMG_20190406_161905761.jpg

    IMG_20190406_161914590.jpg
    • Winner Winner x 2
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  17. Historiker

    Historiker Dramamine Adict Staff Member Moderator Gold Contributor

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    My Motion Simulator:
    DC motor, Arduino, Motion platform, 6DOF
    Not the greatest video, I had asked my wife to keep the motors and the base in the shot but she got distracted with our dog. The majority of the video only shows the floor and paws :D

    I did take a video of her riding the roller-coaster but after the expletives that she used I was advised not to publish it :p

    Still need lots of tweaking and fine tuning. I have 15% smoothing on all DoF but I am thinking of reducing this further.

    Borrowed the power supplies off the 3DoF to augment the two 30amp LED power supplies. I am thinking of making both rigs work off shared resources like power supplies, saberteeth, etc.

    • Like Like x 4
  18. CBC_North

    CBC_North Member Gold Contributor

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    My Motion Simulator:
    2DOF, DC motor, Arduino
    Looks great. Jealous of your simulator cave AND your shop.
  19. Historiker

    Historiker Dramamine Adict Staff Member Moderator Gold Contributor

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    My Motion Simulator:
    DC motor, Arduino, Motion platform, 6DOF
    Here is my wife's ride, colorful language removed...well...most of it :D

    • Funny Funny x 2
  20. Historiker

    Historiker Dramamine Adict Staff Member Moderator Gold Contributor

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    My Motion Simulator:
    DC motor, Arduino, Motion platform, 6DOF