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SMC3 Arduino and Sabertooth Problems

Discussion in 'DIY Motion Simulator Building Q&A / FAQ' started by Sam Neall, Jan 31, 2020.

  1. Sam Neall

    Sam Neall Member

    Joined:
    May 14, 2019
    Messages:
    45
    Balance:
    324Coins
    Ratings:
    +7 / 0 / -0
    My Motion Simulator:
    2DOF, DC motor, Arduino, Motion platform
    image.jpg image.jpg I have done everything exactly according to this https://www.xsimulator.net/communit...ket-serial-pid-motor-driver-w-softstart.9277/
    tutorial and my set up still won’t work. I’ve tested the motors individually and they work. The sabertooth is putting out pretty much nothing (~.5mv) but the wires get hot after a while for some reason. And yes the wires are 10 gauge so they should be able to handle the power. The pot feedback is reading fine apart from small noise. I‘ve tested continuity between all connections (usb, Arduino to Sabertooth, Sabertooth to motor and power) and for some reason nothing is moving. I actually had it working at one point and I don’t remember my setup being any different. It shouldn’t be this hard to get two dang motors to move up and down lol.
    Thanks!
  2. Ads Master

    Ads Master

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  3. Sam Neall

    Sam Neall Member

    Joined:
    May 14, 2019
    Messages:
    45
    Balance:
    324Coins
    Ratings:
    +7 / 0 / -0
    My Motion Simulator:
    2DOF, DC motor, Arduino, Motion platform
    Update. My multimeter was on the wrong Settings. The readings behave accordingly when I move the PWM max up. However it only goes to 1.5 millivolts with no movement. If I move it above 1.5 the motor just goes at full power in one direction. No clue what might be causing this. I also tested the driver with some smaller motors and they were just right. As I would increase the PWM they would slowly increase in speed. There is something wrong with the bigger motors and I’m not sure what it is.