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Showroom 2 Dof (for now) Diy actuator motion rig

Discussion in 'DIY Motion Simulator Projects' started by Joey, Nov 6, 2019.

  1. Joey

    Joey Member

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    My Motion Simulator:
    2DOF, DC motor, Arduino
    Hi all. I'm a electronics and racing enthusiast and i had a go at "trying" to build a pretty much 100% Diy motion rig.
    Sorry for my poor English and photo taking skills..

    My original idea was to build stepper motor driven actuators but.. That was a bit harder than i expected haha. Mainly because i was trying to make the steppers hold a position with a simple analog pot.. Bad idea i know now haha..

    So back to the drawing board and i came up with a kind of overkill but sturdy design for the actuators.
    Mind you i don't have welding equipment nor any real metal working tools so i did everything with a 3d printer and a few simple tools. IMG-20190730-WA0000.jpeg
    IMG-20190811-WA0000.jpeg
    Thinking a simple acme rod would be enough to push roughly 50kg hahah... Nope can't do..
    So i ordered these

    20191012_142043.jpg
    IMG_20190907_212023.jpg

    Then it was time for the electronics...
    I started out actually trying to design and build my own H bridges and although they worked fine it was way overcomplicated and overbuild..
    IMG-20190915-WA0005.jpeg


    So after almost frying my psu i went with a more compact and simpler solution haha.

    IMG-20191019-WA0008.jpeg

    Also tried to find a cheap and fast dc motor and i had a battery powered angle grinder laying around and it had a pretty beefy 18v very fast dc motor in it. So I bought another one and thats how i sourced my motors ^^
    20191025_124456.jpg

    This is where i am atm. The frame...
    Tomorrow i will post my progress from today.
    Hope you guys enjoy my rookie mistakes and poor craftsmanship ^^
    • Like Like x 2
  2. Ads Master

    Ads Master

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  3. Joey

    Joey Member

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    My Motion Simulator:
    2DOF, DC motor, Arduino
    Upgraded the rope positioning sensor design with belts :cool:

    Attached Files:

  4. Joey

    Joey Member

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    My Motion Simulator:
    2DOF, DC motor, Arduino
    IMG-20191031-WA0004.jpeg
    More belt upgrades
  5. Joey

    Joey Member

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    My Motion Simulator:
    2DOF, DC motor, Arduino
    20191021_173817.jpg
    • Like Like x 2
  6. Joey

    Joey Member

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    My Motion Simulator:
    2DOF, DC motor, Arduino
    Has been very busy last few days :thumbs

    Attached Files:

  7. Joey

    Joey Member

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    My Motion Simulator:
    2DOF, DC motor, Arduino
    20191108_144645.jpg 20191108_144658.jpg 20191108_144706.jpg

    Video with motion testing is coming!
    • Like Like x 2
  8. Joey

    Joey Member

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    My Motion Simulator:
    2DOF, DC motor, Arduino
    Did some full weight testing just now and damn what power is in those tiny motors!
    At first i was afraid that they lack torque as they're made for speed but boy was i wrong!
    Also i figured the weight of me and the rig itself was enough to keep the actuators from lifting out of the sockets/feet but they definitely need some reinforcement asap!
    Now i need to figure out a way to permanently link them to floor so they don't lift up anymore...
    Also the belts are quite noisy.. Any ideas how to silence them?

    Ps: Funfact. The belts are from a old broken (mainboard) T300 :rolleyes:
    Last edited: Nov 9, 2019
  9. Joey

    Joey Member

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    My Motion Simulator:
    2DOF, DC motor, Arduino
    IMG-20191109-WA0006.jpeg
    Feet upgrades :cool: As i'm not trusting those tiewraps :D
    • Like Like x 1
  10. Joey

    Joey Member

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    My Motion Simulator:
    2DOF, DC motor, Arduino
    20191110_161049.jpg
    Ready for the first few tests :thumbs
    • Like Like x 3
    • Creative Creative x 1
  11. Joey

    Joey Member

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    My Motion Simulator:
    2DOF, DC motor, Arduino
    Had some issues with the position pots slipping out of sync.
    20191112_162010.jpg
    So i made a little notch in the axle and printed a better version.
    20191112_162254.jpg

    20191112_162113.jpg
    Should stay in place now :thumbs
    • Like Like x 1
  12. Joey

    Joey Member

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    My Motion Simulator:
    2DOF, DC motor, Arduino

    hug:It works!!!
    • Like Like x 2
  13. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
    3DOF, DC motor, JRK
  14. Joey

    Joey Member

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    My Motion Simulator:
    2DOF, DC motor, Arduino
    The "jerk" is there. But indeed after the 4th gear almost unnoticeable.
    Today i'm going to play around with the pid settings :thumbs
    Also i'm running a 30amp psu atm and ordered a 50amp for some extra oomph :cool:
    Motors although tiny run perfectly cool with some help from a couple of 100mm fans.
    But so far i love it! And i will never ever go back to a static rig :grin
    • Like Like x 1
    Last edited: Dec 24, 2019
  15. SoftKitty

    SoftKitty Member

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    My Motion Simulator:
    2DOF, DC motor, Arduino
    Are these type 570 motors, looks similar to the ones on my daughter's toy kart.
    can't believe they work so well on a rig.
    I think one of these is around 150w maybe?
  16. Joey

    Joey Member

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    My Motion Simulator:
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    type 895. 18v 15amp so 270w the diameter is 5.8cm so quite a bit bigger than standard batterypowered powerdrill motors ;)
    As i said they look small but have plenty torque and speed.
    I could probably get away with a even larger gear to pulley ratio because of the speed.
  17. SoftKitty

    SoftKitty Member

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    My Motion Simulator:
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    got it, thanks.
    I searched its price(less than 10usd),
    it's quite a cheap power source,
    I will try this when I build an actuator.

    Attached Files:

  18. Joey

    Joey Member

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    My Motion Simulator:
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    Yup i took one from a old battery powered angle grinder and ordered another one of banggood for 13 euro.
    But remember to keep them cool as they lose power pretty quickly when they get hot. Also the carbon brushes are wearing pretty fast with this amount of amps so its not a perfect solution..
    • Agree Agree x 1
  19. Joey

    Joey Member

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    My Motion Simulator:
    2DOF, DC motor, Arduino
    20200101_133333.jpg 20200101_133410.jpg 20200101_133342.jpg
    • Like Like x 2
  20. PeterW

    PeterW alias Wickie

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    My Motion Simulator:
    6DOF
    Hi Joey
    great work!! congratulation!
    Just a short question because I like the visual impression of your race game. Which game is it and what settings? (snow, daytime,...?)
    Wickie
  21. Joey

    Joey Member

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    My Motion Simulator:
    2DOF, DC motor, Arduino
    Assetto with loads of mods .
    I believe its set to winter textures without snow and the time of day is 9:00am
    Early morning and evening drives are the best. ;)
    • Like Like x 1