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Wiper Ground Isolation Confirmation Needed :)

Discussion in 'SimTools compatible interfaces' started by SMKOUT333, Apr 16, 2011.

  1. SMKOUT333

    SMKOUT333 New Member

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    I will be using two pololu 12v12 controllers

    Just wanted to check if I was isolating the ground properly, Thanks in advance! :)
    SMKOUT333, Apr 16, 2011
    #1
  2. kubing

    kubing Member

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    kubing, Apr 16, 2011
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  3. SMKOUT333

    SMKOUT333 New Member

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    Thanks for the reply, but Im still not certain based on your link.
    SMKOUT333, Apr 16, 2011
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  4. Frakk

    Frakk Active Member

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    You are correct SMKOUT, almost there. Also pay attention to the metal brush casing. It is touching the brushes and it needs to be isolated from the motor housing too. The best way is to measure resistances between points you are trying to isolate.
    Frakk, Apr 16, 2011
    #4
  5. eaorobbie

    eaorobbie Well-Known Member SimTools Developer Gold Contributor

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    My Motion Simulator:
    2DOF, DC motor, JRK, SimforceGT, 6DOF
    Looks right to me. Cut and resolder wire and run out of case
    Then once back together test by placing red on positive and new earth
    On negative, and motor should spin one direction, then reverse wires and
    Motor should spin the other way. With motor spinning use a
    Multimeter to test between positive and motor body and the negative
    And motor body all results need to be void (0)
    Then the motors earth is separated properly and now ready to hook to jrk
    :cheers:
    eaorobbie, Apr 16, 2011
    #5
  6. SMKOUT333

    SMKOUT333 New Member

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    :thbup: Thanks Frakk and eaorobbie that was exactly the kind of assurance I was looking for! Ill do my best and report back :) :cheers:
    SMKOUT333, Apr 17, 2011
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  7. SMKOUT333

    SMKOUT333 New Member

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    Just want to make sure Im going about this right, I know ground isolation is the goal so I don't fry motors or JRK's however, I am FAR from an electrician ;)
    SMKOUT333, Apr 17, 2011
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  8. Frakk

    Frakk Active Member

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    It doesn't matter where you solder, it is the same connection. Soldering to copper will make it easier. :)
    Frakk, Apr 17, 2011
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  9. SMKOUT333

    SMKOUT333 New Member

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    So soldering at 1 is the same as soldering at 2?? One goes to the post next to the positive wire and the other is attached at the brush case, but Im not sure how they do that same thing..? Thanks again! And as long as I cut at 1 2 and 3 Im good??, I messed up one wiper motor doing this incorrectly already, but I have a few more on reserve as I suspected something like this would happen. Which location would be the best to cut and solder 1, 2, or 3? In N00b terms. :p I think I cut too many places on the last motor and ended up not getting anything to power up again, just lots of sparks! ;) Thank you for your patience, I think I am getting ALOT closer :)
    SMKOUT333, Apr 19, 2011
    #9
  10. kubing

    kubing Member

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    cut number 2, solder number 2 wire(which connected to brush) with new wire. done.


    ps: I never open my wiper motor in my simulator project...multimeter is a great stuff for continuity job.
    kubing, Apr 23, 2011
    #10