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Motors losing power

Discussion in 'New users start here - FAQ' started by Deaglex, Sep 5, 2017.

  1. Deaglex

    Deaglex New Member

    Joined:
    Jun 15, 2017
    Messages:
    17
    Location:
    United States
    Balance:
    86Coins
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    +0 / 0 / -0
    My Motion Simulator:
    DC motor, JRK
    I'm running my 2dof with Moto monster minis w/ 30 amp 12v PSU. After about 30 secs in smc3 the motors don't have enough power to move the platform. I have them set to 250 or so I have hooked it up to a 12v battery with the same results. If I power the motors directly I don't have this problem. Any help would be great.
    Deaglex, Sep 5, 2017
    #1
  2. stevemontuno

    stevemontuno Active Member

    Joined:
    Apr 24, 2015
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    316
    Location:
    UK
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    1,721Coins
    Ratings:
    +335 / 0 / -0
    My Motion Simulator:
    2DOF
    What motors are you using and have you got heat sink and fans on your MM ,,,,also check your soldering for crappy connections
    stevemontuno, Sep 6, 2017
    #2
  3. Deaglex

    Deaglex New Member

    Joined:
    Jun 15, 2017
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    17
    Location:
    United States
    Balance:
    86Coins
    Ratings:
    +0 / 0 / -0
    My Motion Simulator:
    DC motor, JRK
    I pr
    Deaglex, Sep 6, 2017
    #3
  4. Deaglex

    Deaglex New Member

    Joined:
    Jun 15, 2017
    Messages:
    17
    Location:
    United States
    Balance:
    86Coins
    Ratings:
    +0 / 0 / -0
    My Motion Simulator:
    DC motor, JRK
    I just installed a new spark fun Moto monster and now it's only putting out 3v while in smc3 i maxed out power out and reduce a everything is set to 0 except kp 500 pwmax 250 kpid 1 KS 1 kpwm 25Khz and it multimeter show 13.4v input and while running sine wave it only puts out a maximum of 3v and barely moves either motor.
    Deaglex, Sep 9, 2017
    #4
  5. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

    Joined:
    Jul 13, 2014
    Messages:
    20,553
    Occupation:
    Innovative tech specialist for NGOs
    Location:
    St Helens, Tasmania, Australia
    Balance:
    145,136Coins
    Ratings:
    +10,779 / 52 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    Is it a genuine MM or clone, as the latter need testing because they are known to have random faults: https://www.xsimulator.net/community/faq/reputable-monster-moto-suppliers-testing-before-use.158/
    noorbeast, Sep 9, 2017
    #5
  6. Deaglex

    Deaglex New Member

    Joined:
    Jun 15, 2017
    Messages:
    17
    Location:
    United States
    Balance:
    86Coins
    Ratings:
    +0 / 0 / -0
    My Motion Simulator:
    DC motor, JRK
    I just got around to testing the motors on and moto monster. It seems to be working fine outside smc3. I can turn the potentiometer with the motor attached and it will output the correct voltage. but in SMC3 it still only outputs 3v or so. The yellow output line doesn't move very much. It also has the same output in Simtools as SMC3. I was wondering if it was some how the code. I flashed the arduino with the original .ino file, with the only change being the pot scaling. The feedback works perfectly in smc3 if i manually turn the pot as well. It seems that smc3 is not pushing the right changes from the feedback.
    Deaglex, Sep 19, 2017
    #6