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2dof project start

Discussion in 'DIY Motion Simulator Projects' started by Israel Ventura, Jan 30, 2020.

  1. Israel Ventura

    Israel Ventura New Member

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    My Motion Simulator:
    2DOF, DC motor
    Good morning, first apologize for my English, I will use google translator, so I will use a simple language or at least I will try.
    After seeing a multitude of projects, I decided to make a version of one that seemed the most appropriate, for now it is only a sketch.
    My first step will be the installation of the electronics and its configuration, if I pass that step I will start the construction of the simulator.
    In the next few days some of the material arrives at home and I will try to upload the advances that I am getting.

    Attached Files:

    • 2DOF.png
      2DOF.png
      File size:
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      Views:
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  2. Ads Master

    Ads Master

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  3. Israel Ventura

    Israel Ventura New Member

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    My Motion Simulator:
    2DOF, DC motor
    The project is ready to be updated to 3dof, but that will be after the 2dof project is finished and its functionality is verified.
  4. Rifly

    Rifly Member

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    My Motion Simulator:
    2DOF, DC motor, Arduino
    It looks like exact copy of DOF Reality motion sim, Im not saying its bad, but you could mention it as an inspiration or a ripoff :D
    • Like Like x 1
  5. Israel Ventura

    Israel Ventura New Member

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    My Motion Simulator:
    2DOF, DC motor
    I never said it was an original model, it is more so in my first post that after watching a lot of videos I decided to make a version of one, it is true that the model is the one you mentioned, but I have no measure, plan or any other guide, other than the video, I do not know if that will be a problem for the forum, if so, just mention it and remove it.
  6. dieser

    dieser Member

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    hey! which program are you using for the project picture?

    good luck for your project :)
  7. Israel Ventura

    Israel Ventura New Member

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    My Motion Simulator:
    2DOF, DC motor
    [QUOTE = "dieser, post: 191416, member: 35909"] ¡Hola! ¿Qué programa estás usando para la imagen del proyecto?

    buena suerte para tu proyecto :)[/ QUOTE]
    SketchUp 2018
    • Like Like x 1
  8. Israel Ventura

    Israel Ventura New Member

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    My Motion Simulator:
    2DOF, DC motor
    Between today and tomorrow I will try to start the tests with the software, I don't know if I will be able to perform it successfully, the test will be done with a window regulator motor, if I pass the test I will buy the engines to start the project.
    The initially thought model will suffer variations, I thought it would be interesting that the pedals and the steering wheel were in a module that was removable, so that the chair could be used on the PC without having to have the simulator constantly armed.
    In the next few days I will upload the image of the new model.
  9. Israel Ventura

    Israel Ventura New Member

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    My Motion Simulator:
    2DOF, DC motor
    This is the test bench, the axis that links the motor with the potentiometer is missing, the printer is working on it.

    Attached Files:

    • Like Like x 1
  10. Zed

    Zed VR Simming w/Index Gold Contributor

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    My Motion Simulator:
    2DOF, DC motor, JRK
    Hey Israel, looks good! A mention about the potentiometer, though. Those work great initially but tend to wear out and get intermittent. When that happens, if your code can’t recognize it and just deenergize the motors (the Arduino motor control guys would know), they can run away. Worst case is you just rock back and forth as the output arm just spins, but if the output arms can hit anything, there can be problems.

    Hall sensors last much longer and are available in packages that are physically just like potentiometers. Those still are critical on alignment and shafts can bind and seize. Alignment either way is important and some kind of flex coupling can really help. There are also two-piece hall sensors with separate magnets and sensors. Nothing to wear out and they can theoretically last forever.
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  11. dieser

    dieser Member

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    Hey!
    interesting! can you tell us where to find them?
    websearch doesnt take me further...
  12. Zed

    Zed VR Simming w/Index Gold Contributor

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    My Motion Simulator:
    2DOF, DC motor, JRK
    Quite a few builders here have used them and details are in the various build threads. The ones I used are these: https://www.mouser.com/ProductDetail/785-RTP180LVEAA but they are more industrial and take their mating connectors too. What sold me on these were totally non-contact and magnets that attach with setscrews but that’s no hill if you have a 3D printer.

    Hall sensors can connect up just like pots too. +5V, Gnd, and the equivalent of a wiper.

    https://www.mouser.com/Sensors/Moti...rue&P=1z0xqraZ1z0x81tZ1z0x2ccZ1yrgqujZ1yvntta

    That link is to Hall sensors that might be suitable on Mouser. Another distributor is DigiKey and they might have other selections. I went with a 180 degree angle measurement range for mine. About $40 each though you can just buy the sensors and supply your own magnet and such for prices down to $10. That’s why I say to check other builds here. People here tend to favor the form factor like a potentiometer over the separate magnet style. One good reason for that is everything is prealigned. With a separate magnet, that’s on you including proper magnet orientation (it matters). The Honeywell magnets have arrows on them to help but it is more involved of a setup.

    You do need to get hall sensors with the right voltage range for your motor controllers. The Arduino uses 5V max on the analog input range so I specified 5V for these.

    You can also just start with pots but beware if they ever go intermittent. You need to know in advance your controller can detect an open circuit and respond appropriately. I think that code is in there but don’t know for certain.

    Good luck!
  13. Israel Ventura

    Israel Ventura New Member

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    My Motion Simulator:
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    Thank you very much for the information, it is an option that must be taken into account, especially if there is a very intensive use, although for now I will use these sensors until everything is working correctly, I already tell you that I first have to operate the set and then the updates will come.
    • Like Like x 1
  14. Israel Ventura

    Israel Ventura New Member

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    My Motion Simulator:
    2DOF, DC motor
    Good morning.
    After a few days of learning I managed to make the model work, saying that I had many problems, which has made me have had to read a lot through the forum, my first problem was the communication between Arduino and computer, do not ask, try the antivirus and firewall issue, change ports and I do not know how many more things, the case is that finally I connect, the second of my problems was that the engines did not move, to be more precise, it moved only one and erratically, after To read and see that many of the tips was to check the wiring, check them and ... indeed one of the cables was incorrectly placed.
    After that, everything has been seeing how the model behaved in the game.
    sorry for my english, google translator.
    .

    Attached Files:

    • Like Like x 2
  15. Israel Ventura

    Israel Ventura New Member

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    My Motion Simulator:
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    A video of how it works, I know it is not going very well, but that work will be for the final project.
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  16. Israel Ventura

    Israel Ventura New Member

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    My Motion Simulator:
    2DOF, DC motor
    I bring what I think will be the definitive model, I suppose that throughout the construction process there will be minor modifications.

    Attached Files:

    • Like Like x 1
  17. Israel Ventura

    Israel Ventura New Member

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    My Motion Simulator:
    2DOF, DC motor
    I have opted for this composition with the idea that the front part, the one that supports pedals and steering wheel is removable and in pieces to store them easily and that way to use the asinto normally after playing.
    • Like Like x 1
  18. Israel Ventura

    Israel Ventura New Member

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    My Motion Simulator:
    2DOF, DC motor
    I have been standing for a while, but I have resumed the project.
    The first photos of the base.

    Attached Files:

    • Like Like x 1
  19. Israel Ventura

    Israel Ventura New Member

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    My Motion Simulator:
    2DOF, DC motor
    The first section finished. I keep moving forward.

    Attached Files:

  20. Israel Ventura

    Israel Ventura New Member

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    My Motion Simulator:
    2DOF, DC motor
    Some more photos

    Attached Files:

    • Like Like x 1