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RC 6DOF #6 going crazy in negative plane???

Discussion in 'SimTools DIY Version' started by JeepGunner82, Jul 14, 2016.

  1. JeepGunner82

    JeepGunner82 Member Gold Contributor

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    My Motion Simulator:
    2DOF, SCN5
    Hello great sim gurus out there!

    I am still working a pesky bug in my mini RC 6dof practice build.
    Arduino code is a m0dified
    // Original code By EAOROBBIE (Robert Lindsay)
    // Completely mangled by aarondc

    all servos 1-5 work well and proper in testing.
    #6 is fine + side. However throw the slider - and it begins to lower, then immediately shoots to 0* at -22, remains in place till -81, and lowers to ~100* till -92, -93 zips to 0*, -99 at 100*, then -100 at 180*

    The following troubleshooting has been done:
    x3 servos tested, 2 new, 1 tested at store
    pos, neg, and pulse wires were exchanged for known working ones
    swapped pulse pin around with corresponding code
    disconnected all other servos (not enough power??)
    reversed scaling on code, reduced range on code

    Why on earth would it be doing this???
    JeepGunner82, Jul 14, 2016
    #1
  2. SeatTime

    SeatTime Well-Known Member

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    My Motion Simulator:
    AC motor, Motion platform
    'Why on earth would it be doing this???' Could be lots of things..
    I would ask first this question to the members here - 'Has anyone else on this site successfully modified EAOROBBIE'S code to drive 6 RC servos to simulate a 6DOF.' Also recommend you check the waveforms going to each servo.
    SeatTime, Jul 14, 2016
    #2
  3. JeepGunner82

    JeepGunner82 Member Gold Contributor

    Joined:
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    My Motion Simulator:
    2DOF, SCN5
    SeatTime,
    thank you for the reply.
    This thread shows how to add servos to the original code.
    http://www.xsimulator.net/community/threads/my-project-guide-me.5682/#post-59262
    I also notice CalSim was running into a similar issue with the last servo going crazy. I wonder if perhaps adding in a code for a "ghost" servo could "trick" it into thinking the #6 isn't the last one??

    Waveforms, hmm will have to get software for testing (and learn how to use it) Diligentinc appears to have one for download.

    //

    Thought your build of carbon fiber linear actuators was pure genius! Most platform movers I have seen in that configuration were hydraulic like (InMotion Simulation)
    JeepGunner82, Jul 15, 2016
    #3
  4. JeepGunner82

    JeepGunner82 Member Gold Contributor

    Joined:
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    My Motion Simulator:
    2DOF, SCN5
    Problem appears to be solved. I added in a nonexistent axis in the interface settings (~Q<Axis9). That solved the issue. If anyone out there having trouble with their last servo going crazy, try that!
    • Informative Informative x 2
    JeepGunner82, Jul 25, 2016
    #4