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Racing 6DOF stewart platform

Discussion in 'DIY Motion Simulator Projects' started by Gadget999, Feb 15, 2019.

  1. Gadget999

    Gadget999 Well-Known Member

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    My Motion Simulator:
    2DOF, DC motor, Arduino, 6DOF
  2. luu trung

    luu trung Member

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    What is the difference between 1800 rpm and 3000 rpm engine and 135 rpm and 75 rpm gearbox?
  3. Gadget999

    Gadget999 Well-Known Member

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    My Motion Simulator:
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    some motors have different max rpms

    the output shaft from the gearbox can have different ratios

    the slower the rpm, the slower the speed of the actuator will be

    however - the gearbox ratio will affect how much torque the output has

    choose the most powerful motor you can get and a gearbox ratio between 50:1 and 30:1
  4. Gadget999

    Gadget999 Well-Known Member

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    My Motion Simulator:
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    I have done some work on the air bags to create a sustained G affect

    its a pnematic cylinder I had laying about that acts in both directions - I will connect it to an actutator soon and get simtools to drive it

    https://www.youtube.com/shorts/6pARdaAAItE
  5. Gadget999

    Gadget999 Well-Known Member

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    My Motion Simulator:
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    another video of the airbag pump

    its basically an arduino nano running SMC3 software and a wheelchair motor and gearbox

    it uses a lot more current than I expected - the air resists being forced up the small diameter tubes - the big motor does the job forcing the air where it needs to be, a very fast response

    you can feel small changes in the force change as the car looses grip - quite a useful addition and adds another feedback to the senses of the driver.

    • Like Like x 3
  6. Gadget999

    Gadget999 Well-Known Member

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    My Motion Simulator:
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    Over time it appears the bags are pumping up and becoming firmer.

    The piston seal in the cylinder seems to leak a tiny bit sucking in air on the backstroke.

    Simple solution was to fit 2x small pressure relief valves so any pressure above a few psi is blown off

    Seems to work really well and ensures the air bags can't be overinflated
    • Informative Informative x 1
  7. Rodrigomarcos1978

    Rodrigomarcos1978 New Member

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    hello.. I'm on my 10th project here with motions in Brazil, where I live. I decided to start a new project with wheelchair motors, but it didn't work out initially because the IBT2 bridges didn't support it.. So I found your post here and bought two of those 100A bridges, one for each motor.. However, I don't have the electrical schematic for connecting the Arduino to this 100A H bridge and I didn't quite understand the correspondence between the terminals... Could you share the wiring diagram you used? thanks !!
  8. Gadget999

    Gadget999 Well-Known Member

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    If i remember correctly It uses a pwm pin and 2 direction pins
  9. absyfadhel1

    absyfadhel1 Member

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  10. Gadget999

    Gadget999 Well-Known Member

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    My Motion Simulator:
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    the motor driver has a positive and a negative connection - the battery connects there
  11. absyfadhel1

    absyfadhel1 Member

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    so the power positive and negative come from psu to battery , and from battery to motor controller?
  12. Gadget999

    Gadget999 Well-Known Member

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    No

    Wire the battery to the motor controller

    Then attach wires from the power supply to the battery - just like a battery charger
  13. absyfadhel1

    absyfadhel1 Member

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    oh ok Thanks alot bro.
  14. luu trung

    luu trung Member

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    My Motion Simulator:
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    how can your device move like that?
    -with asseto cosa compention?
  15. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
    3DOF, DC motor, JRK
  16. Doga Darko

    Doga Darko New Member

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    My Motion Simulator:
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    Would you provide me a link for buying them there is a lot of cheap copy of them.
    Can't find the seller on Ali express
    JIE BO technology rf amplifier store.
    Thnx