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F1 like 3DOF Simulator with heave

Discussion in 'DIY Motion Simulator Projects' started by _cOdaC_, Jun 25, 2024.

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Page 6 of 6
  1. _cOdaC_

    _cOdaC_ Member

    Joined:
    Dec 20, 2023
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    366Coins
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    My Motion Simulator:
    3DOF, DC motor, Arduino
    Oh man, this is giving me a really bad headache.
    I swapped the driver, I swapped the Arduino, I swapped the PSU, no change in behaviour. I increased the distance of data cables to power cables and between the Arduino Uno and the motor, no change...
    One thing that came to my eye was, that when I measure S1 to Arduino GND, the Volts are going up as I manually turn the POT to 3,8 / 3,9 Volts and then the connection (RX/TX in SMC3Utils) is gone and no matter how I turn the POT, the V stays between 3,8 and 3,9V.
    All other measurements (Arduinoi GND <> 0V Sabertooth; Arduino GND <> Sabertooth 0V; Sabertooth B+ and B-; Sabertooth M1A and M1B) were unremarkable and stable.
    Could it be that because of the massive heat that this motor experienced defective motor brushes/carbons and that has an effect?
    It all seems to bring the motor in focus. I guess I swap the motor tomorrow and see what happens.
    _cOdaC_, May 9, 2026
    #101
  2. Sebastian2

    Sebastian2 Active Member

    Joined:
    Dec 17, 2023
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    Yeah, swap that motor next. You seem to have swapped everything else, so thats the next logical step.

    I would not have expected a faulty motor to be able to make your arduino loose connection to your PC, though.
    Sebastian2, May 9, 2026
    #102
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