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Showroom Custom 2DOF full platform

Discussion in 'DIY Motion Simulator Projects' started by Tóth Péter András, May 4, 2023.

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  1. Tóth Péter András

    Tóth Péter András TPA

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    Budapest, Hungary
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    My Motion Simulator:
    2DOF, Arduino
    Thank you. I made the suggested changes!
    Hopefully the last issue before the human test :)How to deal with the pitch?

    Tóth Péter András, May 30, 2023
    #21
  2. early_m

    early_m Active Member

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    My Motion Simulator:
    2DOF, DC motor, Arduino, Motion platform
    What is your central pivot joint look like? It should not allow movement in that direction.

    For more mechanical leverage you can attach the rods higher up the back, behind the top of the seat.
    • Agree Agree x 1
    early_m, May 30, 2023
    #22
  3. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
    3DOF, DC motor, JRK
    Many CV joint allow lateral rotation and if used require additional panhard style control rods running diagonally between the top and bottom frames to prevent unwanted twist of the motion sim. A uni joint prevents lateral twist so is a far simpler solution.

    It is worth hunting around and finding an old car to get the tailshaft and uni joint, just cut it to the suitable length, mounting the uni joint as close to the seat base as possible.
    noorbeast, May 31, 2023
    #23
  4. Tóth Péter András

    Tóth Péter András TPA

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    My Motion Simulator:
    2DOF, Arduino
    Thank you for the replies. I've used, the same 3d bearing as by the shaft, so as you suggested, I'm gonna look for a proper U-joint for it! Thanks again.
    Do you have any link for it maybe on aliexpress?
    Tóth Péter András, May 31, 2023
    #24
  5. Tóth Péter András

    Tóth Péter András TPA

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    My Motion Simulator:
    2DOF, Arduino
    Thank you! I've made the updates.
    What do you think about using gyro instead of potentiometer?
    Tóth Péter András, Jun 17, 2023
    #25
  6. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
    3DOF, DC motor, JRK
    If you are using 10k pots I would suggest 180 degree Hall Sensors as a drop in replacement, as they have good resolution, won't break if over rotated, and have a very long life span.

    I used these but all Hall Sensors with the same specs should be fine: https://au.element14.com/bi-technol...fs/sensor-hall-0-2v-20v-to-10v-pin/dp/2319662
    noorbeast, Jun 17, 2023
    #26
  7. Tóth Péter András

    Tóth Péter András TPA

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    Location:
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    Balance:
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    My Motion Simulator:
    2DOF, Arduino
    Tóth Péter András, Jun 17, 2023
    #27
  8. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
    3DOF, DC motor, JRK
    Because Hall Sensors are a known, proven, robust and extensively utilised solution, I can't recall anyone using a gyro, but you are welcome to try and beat a new path.
    noorbeast, Jun 17, 2023
    #28
  9. Tóth Péter András

    Tóth Péter András TPA

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    My Motion Simulator:
    2DOF, Arduino
    They doesn't ship to Hungary :( What about this one:
    https://www.aliexpress.com/item/32422949989.html
    I'm using currently gyro, and it works, but I doesn't know how robust they are...

    Other:
    Any ideas how to fasten the rod to the motor? In the shaft there was only a hole, and I fasten the rod with a screw, but it has a backlash which I doesn't like...
    Tóth Péter András, Jun 17, 2023
    #29
  10. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    Ratings:
    +10,902 / 54 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    Any hall sensor with the same specs should work OK.
    noorbeast, Jun 18, 2023
    #30
  11. Tóth Péter András

    Tóth Péter András TPA

    Joined:
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    Location:
    Budapest, Hungary
    Balance:
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    Ratings:
    +3 / 0 / -0
    My Motion Simulator:
    2DOF, Arduino
    I made some updates, eliminated some backlash, and tested without driver:
    • Like Like x 2
    Tóth Péter András, Jun 19, 2023
    #31
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