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New User Project

Discussion in 'DIY Motion Simulator Projects' started by Bruce, Jul 4, 2016.

Page 2 of 5
  1. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    Innovative tech specialist for NGOs
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    145,196Coins
    Ratings:
    +10,781 / 52 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    The 200watt 20NM 25:1 motors can be back driven when not powered, but have ample holding when powered for a suitably designed simulator and are the cheapest powerful DC motor option.

    The 50 and 60:1 gearboxes can't be back driven even when not powered, but are also more expensive.

    Plenty of member have successfully used the 25:1 motors on shoulder, foot and even a compact design. Some use mechanical locks to hold the sim in place when not powered.

    What motors and gearboxes you chose are up to you, both in terms of cost and other criteria, like being back driven or not. The 25, 50 and 60:1 200w motors will all work well given an appropriate design. But it is best to post your design before ordering, as that may influence what members may recommend.
    • Like Like x 1
    noorbeast, Jul 17, 2016
    #21
  2. Bruce

    Bruce CM Security

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    My Motion Simulator:
    2DOF
    Thank you, for now it will just be a seat shaker, pretty much like my test rig. The test rig works ok with no load on it but needs bigger motors when you need to add around 80-100kg with seat and human. I might just go ahead and order the motors. Hopefully these will work ok.
    Worm Drive Motor 12V/24V 200W, 180 RPM, 20Nm Torque
    Bruce, Jul 17, 2016
    #22
  3. Bruce

    Bruce CM Security

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    My Motion Simulator:
    2DOF
    Might add some strong extension spring to all 4 corners to assist?
    Bruce, Jul 17, 2016
    #23
  4. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    Occupation:
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    Location:
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    Balance:
    145,196Coins
    Ratings:
    +10,781 / 52 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    The 12V/24V 200W, 180 RPM, 20Nm motors will work well for a shoulder mount seat shaker and can exceed the performance of 90k commercial rigs, no spring assists needed.
    • Agree Agree x 1
    noorbeast, Jul 17, 2016
    #24
  5. Bruce

    Bruce CM Security

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    My Motion Simulator:
    2DOF
    Finally got a chance to build my proper motion seat. I have built it so its bolts straight onto my GTXtreme frame. I am having problem setting up the pots and working them in the software the right motor seems ok but the left just keeps turning even when i have positioned the pot to neutral, as soon as i send a command in test it just spins one direction. Is it better to have a continous pot??
    Also there is chatter from the motors when the sim is just sitting there, Also does anyone have some settings for Iracing???

    Attached Files:

    Bruce, Jul 26, 2016
    #25
  6. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    Ratings:
    +10,781 / 52 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    noorbeast, Jul 26, 2016
    #26
  7. Bruce

    Bruce CM Security

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    My Motion Simulator:
    2DOF
    Yes everything is configured the same pin wise, i am thinking maybe i damaged the pot when i first fired it up?? Seems to be only the left motor having control issues. Might get another 10K pot and try it again.
    I have not changed any of the code, maybe need to set broader middle tolerances??
    Bruce, Jul 26, 2016
    #27
  8. Bruce

    Bruce CM Security

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    My Motion Simulator:
    2DOF
    OK Motor speed was way too high at 255 it was moving too fast for the Pots, i changed it to 100 any ideas what is needed for these motors to operate?
    Bruce, Jul 26, 2016
    #28
  9. Bruce

    Bruce CM Security

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    My Motion Simulator:
    2DOF
    The only other thing i do not under stand is calibrating the pot boundaries. Do i place the pot in the centre then mount it to the motor?? also how to set the max turn range?
    Bruce, Jul 26, 2016
    #29
  10. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    Ratings:
    +10,781 / 52 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    I don't use the code but my understanding is that it must be configured as per @RacingMat's instructions.
    noorbeast, Jul 26, 2016
    #30
  11. Bruce

    Bruce CM Security

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    My Motion Simulator:
    2DOF
    One more thing i am noticing is the left motor is spinning faster then the right, even though the PWM is set to 120
    Bruce, Jul 26, 2016
    #31
  12. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    Location:
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    Balance:
    145,196Coins
    Ratings:
    +10,781 / 52 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    noorbeast, Jul 26, 2016
    #32
  13. Bruce

    Bruce CM Security

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    My Motion Simulator:
    2DOF
    I am using pins A0 and A1 they have been corrected in the code. See Below.

    Potentiometer pins corrected according to wiring explanations in the resource

    AO and A1 in the code and in the wiring instructions
    Bruce, Jul 26, 2016
    #33
  14. Bruce

    Bruce CM Security

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    My Motion Simulator:
    2DOF
    Finally got some time t do some more work to my sim, But i have a problem that i hope someone can help me with. Just using the commands through the Arduino the motors tend to shake alot near the center position. I will post a video of what it is doing. Because of this continous movement in the Iracing game the chair is just constantly moving.

    It must have to do with the code or settings in the Arduino as it will happen without sim tools running. Any ideas??
    Bruce, Aug 14, 2016
    #34
  15. Bruce

    Bruce CM Security

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    My Motion Simulator:
    2DOF
    Video Link
    Bruce, Aug 14, 2016
    #35
  16. Bruce

    Bruce CM Security

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    My Motion Simulator:
    2DOF
    OK guys really struggling to get this thing to work, it has a massive amount of movement before the motors take up but there is no play in the connection with the poteniometers. i can sit on the seat and tilt it nearly 30 degrees before the motor kick in and push it back the other direction. The weird thing is i am using the standard race matt code??
    Bruce, Aug 16, 2016
    #36
  17. Bruce

    Bruce CM Security

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    My Motion Simulator:
    2DOF
    If anyone has team viewer you are more then welcome to have a look at the code or settings
    Bruce, Aug 16, 2016
    #37
  18. Bruce

    Bruce CM Security

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    My Motion Simulator:
    2DOF
    Not sure if it is just the quality of the pots i am using, but it just seems all over the place.
    Bruce, Aug 16, 2016
    #38
  19. bruce stephen

    bruce stephen Hammer doesnt fix it, must be electrical

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    My Motion Simulator:
    2DOF, DC motor, Arduino, Motion platform, 6DOF
    it appears to be oscillation, it may be related to your pot setup or the pots themselves. I am not familiar with @RacingMat arduino code but if there s a way to set a deadzone that would be where to start. also try to tighten everything up at your pots. I would suggest position sensors over pots as they last longer.
    http://www.mouser.com/Search/Produc...rtualkey57700000virtualkey858-6127V1A180L.5FS
    or this if you need 360 degrees
    http://www.mouser.com/ProductDetail...j%2b3zvCGcSKF0VHw8x%2bu4HC6rf9y6iuK8kPMMG4Q==
    bruce stephen, Aug 16, 2016
    #39
  20. Bruce

    Bruce CM Security

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    My Motion Simulator:
    2DOF
    Thanks Bruce, i thought it may have something to do with the pots as they are just cheap ones, i will readdress this and update when completed.
    • Like Like x 1
    Bruce, Aug 17, 2016
    #40
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