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Pneumatic Joyrider / Simul8r

Discussion in 'DIY Motion Simulator Projects' started by Sijmen, Aug 9, 2019.

  1. Sijmen

    Sijmen New Member Gold Contributor

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    Hi everyone,

    My name is Sijmen (Simon) and live in the Netherlands. I built a flight and race seat using the Simul8r plans a couple of years ago (see profile picture). I stumbled across some pneumatic cilinders and valves and started to look into upgrading my seat.

    I found the instructable by dnicky about the pneumatic Joyrider, through which I found out about xsimulator and SimTools. Great t learn about this tool. Amazing to see how large this community is. And what information is already available.

    I am definitely upgrade my seat! :grin It should be multi purpose, like my current seat (racing, flying, helicopter). I have experience with electronics, but no experience with pneumatics. It would be fun to learn about it.

    My first thoughts would be to start with a design based on the Joyrider. Perhaps try to integrate my Simul8r in it. Or design a complete new frame.

    Open questions are:
    • Pneumatics or motors
    • 3D tv Screen on rig or PSVR
    • Joyrider design or modified Simul8r
    • 2 or 3 dof (tilt, roll and yaw)
    A lot to read on this forum. Tips are welcome :)

    11902320_10153467696568346_4785891377397416258_n.jpg $_86.jpeg
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  2. Ads Master

    Ads Master

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  3. Sijmen

    Sijmen New Member Gold Contributor

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    Started with building a proof of concept of yaw control for the Joyrider onusing my current raceseat.

    Waiting on some pneumatic parts to test de rodless cilinder.

    Thinking about trying out some drifting.

    Attached Files:

  4. Sijmen

    Sijmen New Member Gold Contributor

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    Yes, its working pretty good :) Unbelievable how much power/speed the pneumatic cilinder has. The kids love it.

    I am not yet allowed to add a link to a movie. Perhaps in a next post.

    Features
    • A POT meter on the front joint to measure angle.
    • Connection to the POT meter inside the steering wheel.
    • A Arduino which calculates the error between the two and sends out a control signal for left or right movement
    • 5 ports / 3 positions pressure valve with normally closed. Which can push the chair left/right or keep position.

    Problems I currently have:
    • Too much overshoot if I turn up the pressure/speed. This is partly due to the fact that I have pressure valves that can only turn on/off. I cannot control the speed. I now have large deadzone. I want to try and implement a PID. A proportional valve is way to expensive.
    • Returning to center goes as fast as going left and right. I am going to try and use a elastic band for centering and only use the cilinder for breaking-out. But I will need a valve which is normally open for that (ordered on Ali).
    IMG_20191008_095757.jpg IMG_20191008_095734.jpg IMG_20191008_095858.jpg IMG_20191008_095708.jpg
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  5. Sijmen

    Sijmen New Member Gold Contributor

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  6. adgun

    adgun Active Member

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    Hoi Simon
    Pneumatiek is oud en wordt niet veel meer gebruikt.
    Het heeft alles te maken met positie, dat is eigenlijk niet te krijgen.
    Het komt omdat je lucht kunt comprimeren.
    Daarom is het zwaar hydraulisch en lichter elektrisch tegenwoordig
    groeten Ad
  7. Sijmen

    Sijmen New Member Gold Contributor

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  8. Sijmen

    Sijmen New Member Gold Contributor

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    Dat had ik ook al begrepen. Toch leek het mij interessant om er eens mee te experimenten. Daar het relatief goedkoop is (in China).

    Voor precieze posities is het lastig, maar voor G-krachten werkt het nu wel redelijk goed.
  9. adgun

    adgun Active Member

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    I go on in bad english
    There is nothing wrong with experementing the first sim for home use wash a Rock & ride simulator
    It worked on air and got 5/6 posistions.
    Youre work is great for a Gseat
    Go on go on
    ad
  10. hannibal

    hannibal Active Member

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    My Motion Simulator:
    3DOF, 6DOF
    i like the frame! share videos! looking great
  11. Sijmen

    Sijmen New Member Gold Contributor

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  12. Sijmen

    Sijmen New Member Gold Contributor

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  13. Sijmen

    Sijmen New Member Gold Contributor

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    Great update! I have Simtools working in NFS Most Wanted for one DOF, bought a nice Samsung Curved display and remodeled rig to support the display.

    I am using a Arduino's Uno and NodeMCU. The Uno to send the SimTools data to and control the actuators, and the NodeMCU to monitor the Uno. The data sent to the Uno by serial is forwarded using a SoftwareSerial to the NodeMCU. The NodeMCU sents it back to the serial of the PC so I can view it on the Serial monitor/plotter (see video bottomleft).

    I am now using Sway data on a very easy control scheme.

    if Sway > 156 -> push chair left,
    Else if Sway <100 -> push chair right
    Else -> release valve and elastic band pulls the chair to center

    Check out the video's:
    https://photos.app.goo.gl/QtLT3kuvRC7UtinK9
    https://photos.app.goo.gl/urpwno5p4FSqhgLw6

    This is amazing to play with. This was supposed to be a Proof-of-concept for the JoyRider. But this is already great!

    IMG_20191110_212317.jpg IMG_20191110_212328.jpg IMG_20191110_212338.jpg
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  14. Sijmen

    Sijmen New Member Gold Contributor

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    It has been a while. Some great updates.

    -new race seat with belts
    - frame to hold and rotate the seat.
    -aluminium reinforcement in pvc pipes
    - supports 3 DOF (pitch, roll and yaw)
    - 5.1 surround
    - screen on seatrig
    - additional screen for Simtools


    Next step: drives.

    I am still having second thoughts whether I should give up pneumatics. I know I have to go for electric drives for the best experience, but it is a bigger investment.

    Video's
    https://photos.app.goo.gl/6G1L1FAJ9mFFe8UPA
    https://photos.app.goo.gl/HLPaBWK36UKBjrGr5


    Images

    IMG_20200125_120024.jpg IMG_20200125_120036.jpg IMG_20200125_120116.jpg IMG_20200125_120231.jpg
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  15. RacingMat

    RacingMat Well-Known Member Gold Contributor

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    My Motion Simulator:
    2DOF, DC motor, Arduino
    great work!
    IMO pneumatic is not good: noisy, not proportionnal...