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Showroom 2DOF project using 12v DC Motors & Sabertooth

Discussion in 'DIY Motion Simulator Projects' started by timboo68, Oct 21, 2017.

  1. timboo68

    timboo68 New Member Gold Contributor

    Joined:
    Oct 21, 2017
    Messages:
    7
    Location:
    Switzerland
    Balance:
    167Coins
    Ratings:
    +6 / 0 / -0
    My Motion Simulator:
    2DOF, DC motor
    Hello,
    I would like to introduce myself: My name is Thomas, I am 49 (yes, unfortunately) and come from Switzerland. My hobbies are various diy projects. In the last few years there have been a few: Virtual Flipper, Arcade Table, Modular System, etc. and now my Racing Seat. I chose a 2 DOF version with 2 really powerful motors, Sabertooth controller, 2 power supplies, Logitech steering wheel, handbrake and 3 monitors, rumble . The whole was built with PVC pipes and aluminum profiles as well as a correct seat adjustment.
    It's already working but not finished yet. For the moment, I am still the problem with the position sensors to solve.
    The first variation was with built with potentiometers but I wasn't happy with it. Always had disturbances. Now I have special magnetic sensors ordered. They work in 0-180 ° and should give a 0-5V output without noise. Let's see..

    I'm looking forward to your feedback ...

    Here a few pictures:

    DSC_3908.JPG DSC_3923.JPG DSC_3909.JPG DSC_3912.JPG DSC_3910.JPG DSC_3917.JPG DSC_3919.JPG DSC_3921.JPG IMG_1621.jpg IMG_2546.jpg IMG_1699.jpg
    • Like Like x 3
    timboo68, Oct 21, 2017
    #1
  2. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

    Joined:
    Jul 13, 2014
    Messages:
    21,191
    Occupation:
    Innovative tech specialist for NGOs
    Location:
    St Helens, Tasmania, Australia
    Balance:
    148,826Coins
    Ratings:
    +10,920 / 54 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    Nice work :thumbs

    I am really looking forward to seeing a video of your rig in action.

    That looks to be a custom adapter for the motor to gearbox, was that to get a specific ratio?
    noorbeast, Oct 21, 2017
    #2
  3. timboo68

    timboo68 New Member Gold Contributor

    Joined:
    Oct 21, 2017
    Messages:
    7
    Location:
    Switzerland
    Balance:
    167Coins
    Ratings:
    +6 / 0 / -0
    My Motion Simulator:
    2DOF, DC motor
    Thx! No, i've ordered the motors and the gears but there wasn't a part to hold them together so I had to construct something by my self ;-)

    As soon as i mounted my new position sensors I will make a video in action.
    IMG_3840.JPG IMG_3841.JPG IMG_3838.JPG
    • Like Like x 1
    timboo68, Oct 21, 2017
    #3
  4. timboo68

    timboo68 New Member Gold Contributor

    Joined:
    Oct 21, 2017
    Messages:
    7
    Location:
    Switzerland
    Balance:
    167Coins
    Ratings:
    +6 / 0 / -0
    My Motion Simulator:
    2DOF, DC motor
    1st test video:
    • Like Like x 2
    timboo68, Nov 28, 2017
    #4
  5. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

    Joined:
    Jul 13, 2014
    Messages:
    21,191
    Occupation:
    Innovative tech specialist for NGOs
    Location:
    St Helens, Tasmania, Australia
    Balance:
    148,826Coins
    Ratings:
    +10,920 / 54 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    Great to see your rig in action, it looks both powerful and responsive.

    In the video there does seem to be some flex in the base frame.
    noorbeast, Nov 28, 2017
    #5
  6. timboo68

    timboo68 New Member Gold Contributor

    Joined:
    Oct 21, 2017
    Messages:
    7
    Location:
    Switzerland
    Balance:
    167Coins
    Ratings:
    +6 / 0 / -0
    My Motion Simulator:
    2DOF, DC motor
    Yes, great! Thank you. Yes, there is some flex in the aluminium frame, but i not think this is a problem. What i have to change is the way i get the position with my self designed and printed case with the special magnetic encoder. I use 2 (1:1) self printed gears for the moment and there is backlash the results sometimes in selfoscilation of the motor. (Fast and small up and downs). I've ordered 2 gears with cog belts i am waiting for. I hope after that mod everything is perfect...
    timboo68, Nov 30, 2017
    #6
  7. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

    Joined:
    Jul 13, 2014
    Messages:
    21,191
    Occupation:
    Innovative tech specialist for NGOs
    Location:
    St Helens, Tasmania, Australia
    Balance:
    148,826Coins
    Ratings:
    +10,920 / 54 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    I mentioned the flex as it will soak up some of the fine motion details. Some bracing may help.
    noorbeast, Nov 30, 2017
    #7