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Motor Problems

Discussion in 'DIY Motion Simulator Building Q&A / FAQ' started by Sam Neall, Dec 19, 2019.

  1. Sam Neall

    Sam Neall Member

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    My Motion Simulator:
    2DOF, DC motor, Arduino, Motion platform
    My motors make a rumbling sound when I turn up the PWM max on SMC 3. They don’t move and the feedback is all over the place. Attached is a pic of what it looks like in smc.

    Attached Files:

  2. Ads Master

    Ads Master

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  3. SeatTime

    SeatTime Well-Known Member

    Joined:
    Dec 27, 2013
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    Newcastle Australia
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    My Motion Simulator:
    DC motor, Motion platform, 6DOF
    Try some screened cable for the feedback line, or add in some deadzone in the SMC3 app.
  4. Sam Neall

    Sam Neall Member

    Joined:
    May 14, 2019
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    34Coins
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    +18 / 0 / -0
    My Motion Simulator:
    2DOF, DC motor, Arduino, Motion platform
    Is the Feedback line the wire running from my Arduino to my motor driver? I am using a sabertooth driver btw. Also I’m not really sure what you mean by dead zone. I’ve set limits if that is what you mean.
  5. SeatTime

    SeatTime Well-Known Member

    Joined:
    Dec 27, 2013
    Messages:
    2,447
    Location:
    Newcastle Australia
    Balance:
    27,310Coins
    Ratings:
    +2,739 / 32 / -0
    My Motion Simulator:
    DC motor, Motion platform, 6DOF
    The feedback line is from the pot on the motor back to the Ard. SMC3 deadzone.. try 1 or 2

    DeadZone SMC3.jpg
  6. Sam Neall

    Sam Neall Member

    Joined:
    May 14, 2019
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    +18 / 0 / -0
    My Motion Simulator:
    2DOF, DC motor, Arduino, Motion platform
    I will try the dead zone. When I was putting on the pots I would sometimes move the arm and the feedback would jump up and kind of go crazy. It could possibly be the pots themselves. I will check it out. Thanks!
  7. Sam Neall

    Sam Neall Member

    Joined:
    May 14, 2019
    Messages:
    106
    Balance:
    34Coins
    Ratings:
    +18 / 0 / -0
    My Motion Simulator:
    2DOF, DC motor, Arduino, Motion platform
    OK so I installed shielded cables and played around with the dead zone and I’m coming up with the same results. I have my power supply and my motor driver right next to the Arduino. Do you think if I moved the Arduino to a different location it would help? All the cable is shielded except for a few inches of the pin connectors I have to use for the Arduino
    Last edited: Dec 30, 2019