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Inconsistent SMC3 connectivity to Arduino

Discussion in 'DIY Motion Simulator Building Q&A / FAQ' started by Sam Neall, May 11, 2020.

  1. Gadget999

    Gadget999 Well-Known Member

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    what is the SPS part of the SMC3 ?

    what does connecting pin 8 to gnd do ?
  2. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    • Like Like x 1
  3. Sam Neall

    Sam Neall Member

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    Sorry nobody asked me what sketch I was using. Since I had no clue what the problem was (axis configuration, SMC3, wiring, tuning center) I just posted it on the general questions thread. My bad.
  4. Sam Neall

    Sam Neall Member

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    I think setting the smoothing parameter too high previously caused the main problem for me because it seems to be better with a lower Ks. Increasing deadzone makes the PWM line stand still when the motors aren’t moving, but as soon as I try and move the motors, there is worse twitching. Increasing Fpid/ seems to do nothing beyond 4 which slightly makes it better.
    Last edited: May 21, 2020
  5. BlazinH

    BlazinH Well-Known Member

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    In my case I didn't ask what sketch you were using because the threads title says your issues are with SMC3 sketch not SMC3-SPS :confused:. That was the point of my previous post.
    Last edited: May 21, 2020
  6. Sam Neall

    Sam Neall Member

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    Y
    Yeah I didn’t know what SPS meant so I didn’t know I needed to make a distinction haha.