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Seattime's Sims

Discussion in 'DIY Motion Simulator Projects' started by SeatTime, Mar 8, 2018.

  1. pmvcda

    pmvcda aka FlyPT

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    My Motion Simulator:
    6DOF
    Yes and they are good!
    Fast, two cores and lots of pins...

    Using them to position the bldc motors only with the hall sensors
    • Like Like x 1
  2. Gadget999

    Gadget999 Active Member

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    My Motion Simulator:
    2DOF, Arduino
    Are they compatible with the arduino code ?
  3. pmvcda

    pmvcda aka FlyPT

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    • Like Like x 1
  4. SeatTime

    SeatTime Well-Known Member

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    My Motion Simulator:
    DC motor, Motion platform, 6DOF
    Now taking a break from building commercial sim stuff and in part will be doing some work on my own sim. Have a few things that I would like to get back to working on Ie. - helmet G system.
    • Like Like x 1
    • Agree Agree x 1
  5. Pierre Lalancette

    Pierre Lalancette Lalancelot Gold Contributor

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    My Motion Simulator:
    6DOF
    Hello SeatTime, I have 3 questions:

    You were really secretive about your G-seat system. Now, you seam really open about it. Have you reach a point were it doesn't matter anymore because you have a commercial product set in place? Or maybe you don't want to go that route anymore? Maybe are we only seeing the tip of the iceberg...

    I was about to ask about your paddle system that you seam to have let go, and put right back in. Then I found this quote:
    Am I following it right?

    Have you tried your harness without any actuator movement? I guess you did. I was wondering how much movement sensation comes from your harness and how much comes from the actuators?
  6. SeatTime

    SeatTime Well-Known Member

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    My Motion Simulator:
    DC motor, Motion platform, 6DOF
    I'm still using a G-Vest in my rig + some other systems that I have yet to really show in action. Unfortunately the vest system is custom made to fit my body,rig and possibly a bit too realistic safety wise, so not really a candidate for commercialisation at this stage. Yes I have tried it with the 6DOF off and is excellent, but better with it on. Eg In a aircraft its great to roll into a turn (keeping the inner ear happy) with the 6DOF, but also experience the constant Gs pushing you down (heave) and being push/pulled against the high side of the aircraft (sway), as it would happen in a real aircraft. This is just not possible in a standard motion system.
    • Like Like x 2
  7. BlazinH

    BlazinH Well-Known Member

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    This is fun since we're left to speculate. :) From what information we have I'm thinking pressure applied to the top of the head and possibly more cables atached to the vest pulling downwards. Or maybe the cable to the helmet is only for VR integration.
    Last edited: Aug 22, 2018
  8. Grigory

    Grigory Active Member

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    Hi SeatTime, could you please let me know the type of bowden cable you are using in your rig? I started testing my gseat today and discovered that my bicycle brake cables get warped and twisted when under load, absorbing the pulling force. I suspect that the sleeve of my cable may be too thin.

    How thick is the sleeve of your cables?
  9. UAlberta Formula SAE

    UAlberta Formula SAE New Member

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    My Motion Simulator:
    Arduino
    I love these little guys. Great boards and really good library support.

    One thing to watch out for looking into similar boards are the new m0 based Arduinos. A lot of documentation and libraries (especially third party) have not been updated to support the new boards. Nothing that can't be fixed but it's a pain in the neck when even the simplest libraries don't compile. If you don't need the power, I would definitely recommend sticking to the old Arduino processors for now :thumbs
    • Informative Informative x 1
  10. SeatTime

    SeatTime Well-Known Member

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    My Motion Simulator:
    DC motor, Motion platform, 6DOF
    Approx 5.5mm - thats the dia of the cable. They will twist - but this has never been an issue with how I use them. You could try a gear change cable, as they do not twist, but are not as strong.
    • Informative Informative x 1
    Last edited: Aug 29, 2018
  11. Grigory

    Grigory Active Member

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    My Motion Simulator:
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    Thank you!
  12. Benji85

    Benji85 Member

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    My Motion Simulator:
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    Just had a quick look through this threat and all I can say is "wow!" That's some great work
  13. SeatTime

    SeatTime Well-Known Member

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    My Motion Simulator:
    DC motor, Motion platform, 6DOF
    To be a bit clearer, there are allot of different cables out there - picture of two common types below, with what/not to use highlighted.

    bowden cables.jpg
    • Informative Informative x 3
  14. Brett Loxton

    Brett Loxton New Member

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    @Grigory If you go to a cycle shop and ask for linear brake cables, that should fix your problem.
    • Informative Informative x 1
  15. Grigory

    Grigory Active Member

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    Exactly! I replaced the lower type casing with the upper type casing — and everything worked just fine.
  16. Grigory

    Grigory Active Member

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    Thanks! I realized that I was using the gear shift cable casing (the lower one on the seattime’s picture) instead of the proper brake casing. The problem was gone when I corrected that.
  17. MarkusB

    MarkusB Active Member Gold Contributor

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    My Motion Simulator:
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    @SeatTime, doesn't such a head G-system essentially limit your head movements? For example, can you still look over your shoulder or down with the system mounted to your helmet?
    I know this is a yes/no question, but maybe you can reveal some details? :)
  18. SeatTime

    SeatTime Well-Known Member

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    My Motion Simulator:
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    It did limit the movement of my head at the limits, but the real issues were with using a VR headset - which is the main reason why I later moved to a different design. Sorry, cannot release details at this time.
  19. AussieSim

    AussieSim Member

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    Well there is a teaser for something innovative

    http://www.prosimu-shop.com/en/p5mp-p7mp/78-p7mp-plateforme-ultime-6-dof.html

    New platform P7MP based on 7 cylinders PRS 200 [2G and 280mm / s] - Innovative creation signed ProSimu: For pilot training.Compatible with many cockpit.

    6 degrees of freedom reproduced: [Surge, Sway, Heave, Yaw, Roll, Pitch] - + Rear and Front traction loss. Not based on a stewart or hexapod platform.[too slow and interdependent degree of freedom]

    Release date not known.​
  20. Pierre Lalancette

    Pierre Lalancette Lalancelot Gold Contributor

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    My Motion Simulator:
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    Little question about your actuator. What was your best travel distance of your actuator? Just trying to know if I have a good travelling distance with mine or if I should look for way to improve it.