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Finally started My 2DOF Sim

Discussion in 'DIY Motion Simulator Projects' started by Jean Paul Andrade, Jul 11, 2019.

  1. Jean Paul Andrade

    Jean Paul Andrade New Member

    Joined:
    Jun 15, 2019
    Messages:
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    Balance:
    194Coins
    Ratings:
    +4 / 0 / -0
    My Motion Simulator:
    3DOF, DC motor, Arduino
    and the platform with the pivot and the wheels for the loss of traction mechanism is ready too, I'm a little bit closer, i hope to me working on the electronics by the end of the week or sooner.

    Attached Files:

  2. Jean Paul Andrade

    Jean Paul Andrade New Member

    Joined:
    Jun 15, 2019
    Messages:
    24
    Balance:
    194Coins
    Ratings:
    +4 / 0 / -0
    My Motion Simulator:
    3DOF, DC motor, Arduino
    hello partners, my project is almost done, I haven't made the paint job or details until is fully functional, I have some technical issues to deal with, I hope to get some help from you guys, I'm gonna post some pictures of the Sim, for start the MMS are damaged, only one motor output is working, but i use the remaining one of each MMS for each of the two motors running, for testing purposes until I get the new ones, the thing is that today one of the MMS stop working in one way (the lever just go up, but can't go down), still I was running some test and even when the sim moves and it seems is not gonna be able to deal with the weight, is it possible i have to change the motors? are these wiper motors to weak for the job?

    Attached Files:

  3. noorbeast

    noorbeast VR - The Next Generation Staff Member Moderator

    Joined:
    Jul 13, 2014
    Messages:
    13,776
    Occupation:
    Innovative tech specialist for NGOs
    Location:
    St Helens, Tasmania, Australia
    Balance:
    103,700Coins
    Ratings:
    +8,611 / 42 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    I am just checking, are the wiper motors ground isolated: https://www.xsimulator.net/community/faq/wiper-motor-mandatory-ground-isolation.25/

    If you are using clone MMs it pays to test them on arrival, as they are often faulty: https://www.xsimulator.net/community/faq/reputable-monster-moto-suppliers-testing-before-use.158/

    In terms of design it is preferable to have the uni joint as close as possible to the seat base, as that helps reduce the load on the motors: https://www.xsimulator.net/community/faq/universal-joint-placement.108/

    Also make sure the rig is well balanced: https://www.xsimulator.net/communit...-of-gravity-to-balance-a-motion-simulator.55/
  4. Jean Paul Andrade

    Jean Paul Andrade New Member

    Joined:
    Jun 15, 2019
    Messages:
    24
    Balance:
    194Coins
    Ratings:
    +4 / 0 / -0
    My Motion Simulator:
    3DOF, DC motor, Arduino
    hello @noorbeast yes, the motors are ground isolated, that was the first thing I did when I bought them, the MMS are clones and they got damaged from the start but I just keep them until the structure was finished so I can test everything mounted, I ordered a couple more, if they fail again I will buy sabertooth. the rig is correctly balanced, the only thing to do is to move the joints closer to the seat, as you told me, I thing there's too much load at the motors, also do you think the levers are to large!? I used SimCalc and they should be ok with 8cm (3,14") but I don't know the exact specifications on the motors, also Noorbeast, can you please give me your opinion on these motors: https://www.ebay.com/itm/Jazzy-Whee...597800?hash=item4b52f901a8:g:xAkAAOSwcdBcRTek
    thanks you!
  5. noorbeast

    noorbeast VR - The Next Generation Staff Member Moderator

    Joined:
    Jul 13, 2014
    Messages:
    13,776
    Occupation:
    Innovative tech specialist for NGOs
    Location:
    St Helens, Tasmania, Australia
    Balance:
    103,700Coins
    Ratings:
    +8,611 / 42 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    With wiper motors I think 40mm CTC on the lever or less probably better, as they are not particularly powerful.

    I suspect the motors are ok, if the gearboxes are robust, it would be best to use Sabertooth and 24v LED PSU.