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2DOF - Sabertooth 2x32 - Arduino UNO - PGSaw 50:1

Discussion in 'DIY Motion Simulator Projects' started by Edaurdo, Jul 11, 2018.

  1. Edaurdo

    Edaurdo Member

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    My Motion Simulator:
    2DOF, DC motor, Arduino
    Here I present my 2dof! I am very happy and grateful to everyone in the community.

    I want to thank @mariano68 for helping me to take the first steps, fundamental to progress without problems.
    Many thanks to @RufusDufus and @BlazinH for the fantastic code they have developed
    My platform is made with:
    - DC Motors, 180w, PGSAW 50: 1
    - Sabertooth 2x32
    - Arduino UNO
    - PSU 12v 50Amp
    Now I use the LFS plugin and I hope to be able to buy the NoLimits2 soon

    When I have more news I will send them to you. Greetings to all!

    Attached Files:

    • Like Like x 2
  2. noorbeast

    noorbeast VR - The Next Generation Staff Member Moderator SimTools 2.0 Beta Tester

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    My Motion Simulator:
    3DOF, DC motor, JRK
    Nice progress so far :thumbs

    When do you start on the frame?
  3. Edaurdo

    Edaurdo Member

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    My Motion Simulator:
    2DOF, DC motor, Arduino
    This weekend I will make a wooden frame. With him I intend to obtain some conclusions, such as how much weight my motors can lift, where the center of balance should be, etc ... Then, I will realize the final frame in metal.
    Thank you very much for your message! I will be sending my progress next week

    Yesterday I made the union for the chair. I show you some pictures

    ;)

    Attached Files:

    • Like Like x 1
  4. Edaurdo

    Edaurdo Member

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    My Motion Simulator:
    2DOF, DC motor, Arduino
    After obtaining some conclusions related to the strength of the motors, I decided to build another framework. I send you some images

    Attached Files:

  5. noorbeast

    noorbeast VR - The Next Generation Staff Member Moderator SimTools 2.0 Beta Tester

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    My Motion Simulator:
    3DOF, DC motor, JRK
    Great to see your project progressing.

    With a compact design you need a fair bit of torque, so when you start testing use the smallest CTC hole on your lever. You can always bump it to the next hole if testing determines the motors are not under undue load.

    Just an idea but on my compact build I used a bar between the top of the gearboxes so the motors themselves added to the structural rigidity:

    [​IMG]
  6. CBC_North

    CBC_North New Member

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    My Motion Simulator:
    2DOF, DC motor, Arduino
    @noorbeast, how is that bar constructed? Hard to tell from the picture.
  7. Edaurdo

    Edaurdo Member

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    My Motion Simulator:
    2DOF, DC motor, Arduino
    @noorbeast, thanks for the idea, I'll apply it and then I'll show you

    Could you tell me what are the characteristics of the motors you used in your compact design? Mine are 12v, 180w, gear ratio 1:50

    Congratulations for your simulator, it looks beautiful!

    ;)
  8. Edaurdo

    Edaurdo Member

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    My Motion Simulator:
    2DOF, DC motor, Arduino
    I share my first test. I also rided it and the strength of the engines is adequate.

    With this prototype I managed to understand many aspects related to forces. The next step will be to replace the frame with a metal one ... I'll keep you updated;)

  9. noorbeast

    noorbeast VR - The Next Generation Staff Member Moderator SimTools 2.0 Beta Tester

    Joined:
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    Occupation:
    Innovative tech specialist for NGOs
    Location:
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    Balance:
    87,822Coins
    Ratings:
    +7,421 / 35 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    The bar is solid aluminum with a hole tapped either end, but it could be anything that is strong, like steel.

    Mine are 12V 200w motors fitted with 60:1 gearboxes, which in my experience can't be back driven.
  10. Edaurdo

    Edaurdo Member

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    My Motion Simulator:
    2DOF, DC motor, Arduino
    Apologies for my ignorance, what do you mean with "can't be back driven"?
    clearly my english is not the best:(
  11. noorbeast

    noorbeast VR - The Next Generation Staff Member Moderator SimTools 2.0 Beta Tester

    Joined:
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    Occupation:
    Innovative tech specialist for NGOs
    Location:
    St Helens, Tasmania, Australia
    Balance:
    87,822Coins
    Ratings:
    +7,421 / 35 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    When not powered on the lever on a 25:1 can be moved by hand.

    Brand new 50:1s can't be moved by hand when not powered on, but once broken in they can be moved by the weight of a user in a rig.

    In my experience a 60:1, even on a compact design, can't be back driven when not powered on.

    That does not mean that a 50:1 is unsuitable, just that after some use it likely will be able to be back driven when not powered on.
  12. mariano68

    mariano68 Active Member

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    My Motion Simulator:
    2DOF, Arduino, 4DOF
    It's great to see you're progresing! Call me, I have some points to discuss.