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JRK G2 Hall potentiometer feedback connection

Discussion in 'DIY Motion Simulator Building Q&A / FAQ' started by 427Cobra, Jan 1, 2020.

  1. 427Cobra

    427Cobra There is no substitute for cubic inches

    Joined:
    Dec 26, 2018
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    Location:
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    My Motion Simulator:
    2DOF, DC motor, JRK
    I don't get the position feedback working using Hall potentiometers and I guess they are not connected in the correct way because I can't do any feedback settings in the Pololu setup interface but I can control the motors manually by the inteface without feedback activated.

    The JRK G2 card has two different feedback connections, tachometer and analog, and I have used the analog input connection in the same way as recommended for use of a standard potentiometer. (GND to POT-, FBA analog feedback to OUT on the Hall potentiometer and AUX to UCC on the Hall potentiometer).

    I guess the AUX (auxiliary output) give the needed 5V to the Hall potentiometer electronics but perhaps I'm wrong and I shall I use the 5V (regulated output) instead of the AUX output?
    Edit: Found this at the Pololu site "The AUX pin can be used to supply 5 V power to a feedback potentiometer and detect if it becomes disconnected."

    OR shall I use the SCL and SDA/AN and GND connections on the JRK?
    Last edited: Jan 1, 2020
  2. Ads Master

    Ads Master

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  3. 427Cobra

    427Cobra There is no substitute for cubic inches

    Joined:
    Dec 26, 2018
    Messages:
    28
    Location:
    Sweden
    Balance:
    329Coins
    Ratings:
    +13 / 1 / -0
    My Motion Simulator:
    2DOF, DC motor, JRK
    Problem solved! :)
    Used the +5V output instead of AUX on the JRK G2 and unchecked the "Detect disconnect with power pin (AUX) in the feedback settings to get the Hall potentiometers working.
    • Informative Informative x 1