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Did I Fry my JRK?

Discussion in 'DIY Motion Simulator Building Q&A / FAQ' started by pittperson, Jun 25, 2016.

  1. pittperson

    pittperson Member

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    Just when I thought I was ready to move my first motor, I had a very anticlimactic moment. I'm wondering if my horrible soldering skills may have fried my JRK.

    I have power at the PSU, Power at the JRK but nothing going to the motor itself.

    Any ideas?
    20160625_175239.jpg 20160625_175336.jpg 20160625_175403.jpg
    pittperson, Jun 25, 2016
    #1
  2. GIB SimRacing

    GIB SimRacing Active Member

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    My Motion Simulator:
    2DOF, DC motor, JRK
    There won't be any voltage on the motor terminals unless the motor is being driven at the time.
    Are you trying to measure voltage while controlling the motor via SimTools or while in game?
    • Agree Agree x 2
    GIB SimRacing, Jun 26, 2016
    #2
  3. pittperson

    pittperson Member

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    No, not via SimTools or while in a game. I was just trying to use the Pololu Jrk config utility.
    pittperson, Jun 26, 2016
    #3
  4. SeatTime

    SeatTime Well-Known Member

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    My Motion Simulator:
    AC motor, Motion platform
    Your going to have to give us more information then that if you are really after helpo_O. Eg is there a feedback pot fitted?
    Last edited: Jun 26, 2016
    SeatTime, Jun 26, 2016
    #4
  5. pittperson

    pittperson Member

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    Sorry. I thought I was doing pretty good with the info. I do not have a feedback POT fitted yet. I have the most simple setup possible right now. PSU -> JRK -> motor. The JRK is plugged into my computer and I'm running the Pololu utility. I'm assuming the "Run Motor" button would actually run the motor if everything were configured correctly.
    pololu utility.jpg
    pittperson, Jun 26, 2016
    #5
  6. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
    3DOF, DC motor, JRK
    Part of the configuration is setting the min and max calibration for the lever, via the pot feedback, so the JRK knows what range to run the motor within.
    noorbeast, Jun 26, 2016
    #6
  7. pittperson

    pittperson Member

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    Ok. I got my POT attached to the JRK and I get feedback in the variables vs time graph. So that looks all good. Next, I ran through the Setting Up Your System section of the JRK user guide, set the appropriate errors to Enabled and Latched, applied the settings and powered it up. Still no luck, the JRK LED is still red. Next, I ran through each error that should be set to enabled and latched individually and the only error that continues to stop the motor is the No power error. Its looking more and more like a bad JRK... in my noobie opinion.
    pittperson, Jun 27, 2016
    #7
  8. pittperson

    pittperson Member

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    Problem solved. Went back and re-soldered everything! Thanks!
    • Like Like x 2
    pittperson, Jun 27, 2016
    #8
  9. SeatTime

    SeatTime Well-Known Member

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    My Motion Simulator:
    AC motor, Motion platform
    I'm not trying to be rude, but this is all you originally told us 'I have power at the PSU, Power at the JRK but nothing going to the motor itself. Any ideas' and three pictures showing what you had just stated. I don't know your background, but that was never going to help us isolate your issue. Note that a JRK normally monitors the feedback line and will shut down the output if it does not see the right voltage. Glad to see you got it sorted.

    SeatTime, Jun 27, 2016
    #9