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Motor can be stopped by hand when controlled by Monster Moto

Discussion in 'Motor actuators and drivers' started by Ralph Manuel, Jan 3, 2015.

  1. Ralph Manuel

    Ralph Manuel Member

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    Hi! I'm currently facing a problem where when the motor is connected with the monster moto, the motor can be stopped by a hand but when I directly connect a power supply to the motor, I cant stop it. I think monster moto reduces the power of the motor. What do you think?

    Here is my hardware:
    -12V 30A PSU
    -wiper motor
    -Monster Moto
    -Arduino Mega
  2. bsft

    bsft

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    Unless I am wrong, any h-bridge, JRK included will let the motor go soft when the power is off.
  3. Ralph Manuel

    Ralph Manuel Member

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    the motor go soft when connected to h-bridge even it is turned on?
  4. bsft

    bsft

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    ok, not sure on ard code and interface settings, but I know with JRK settings, yes the motors dont hold unless they are told to in the interface settings. And yes, thats with power on as well
    Id guess the Ard settings would have a similar thing in game engine interface.
    as long as it holds in game, there should not be an issue too much
    perhaps @Pit can enlighten us here.
  5. Pit

    Pit - - - - - - - - - - - - - - - - Gold Contributor

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    Moto Monster does only what Arduino is "saying". To my knowledge you are using the SMC3 code, please have a look at PWMmax. If this value is too low, the motor is going too weak. Could you honestly post SMC3 screenshots?
  6. Ralph Manuel

    Ralph Manuel Member

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    @Pit, No, I am not using SMC3, I am using @RacingMat 's arduino code.
    I've tried SMC3, but no luck, I can't make it work. lol
  7. Pit

    Pit - - - - - - - - - - - - - - - - Gold Contributor

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    You have run into issues using SMC3 code, and now into RacingMat code - IMHO the problem is not the code...@RacingMat is the best who can give any help about his code, still I ask you about the parameters you have changed within the code like #define pwmMax.
  8. Pit

    Pit - - - - - - - - - - - - - - - - Gold Contributor

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    Code deleted by request
    Last edited: Jan 3, 2015
  9. RacingMat

    RacingMat Well-Known Member Gold Contributor

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    hi!
    there is something weird here :confused:
    motomonster should not "reduce" the motor power

    can you give us more details about your setup?
    - I guess you didn't connect the potentiometer yet... it's fine for the first tests
    - did you try with only 1 motor running?
    - did you change anything in the code?

    - my guess would be a wrong wiring... can you share some pictures?
    yours
    Mat
  10. Ralph Manuel

    Ralph Manuel Member

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    No, I didn't change anything on the code of RacingMat,
  11. RacingMat

    RacingMat Well-Known Member Gold Contributor

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    @Pit : please don't post whole code -> if I have to publish a newer version, people could get messed up with older versions scattered in posts.
    • Useful Useful x 1
  12. Ralph Manuel

    Ralph Manuel Member

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    -the wiring is good, all pins are connected right.
    -the motor, together with the attached potentiometer is running smoothly when I use axis testing(DOF output and Axis output) .

    Please wait and I'll post some pictures and videos. Thanks
  13. RacingMat

    RacingMat Well-Known Member Gold Contributor

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    maybe one VNH is burnt...

    is it the same behaviour on both outputs (motor1 and motor2)?
  14. Ralph Manuel

    Ralph Manuel Member

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    i did not try the other VNH yet cause I don't have my soldering iron(can't solder wires to the other VNH).
    But in the beginning of testing(not using racingmats code yet), I've tried to run the MM with the sample codes I've seen on the web and it is the same. The motor is not that hard enough.
    Last edited: Jan 3, 2015
  15. Ralph Manuel

    Ralph Manuel Member

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    Hi! Here are some pictures and videos. Kindly check it out.



    As you can see, every time I stopped the motor, the PSU fan is noisy because the PSU has a built-in control circuit according to working to temperature. So, stopping the motor adds some load to the PSU.



    20150103_211501.jpg
    I don't have materials needed that's why there are tapes, plywoods and recycled materials. LOL
    20150103_211552.jpg
    Last edited: Jan 3, 2015
  16. Scratch

    Scratch Active Member

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    Very strange. I cannot help much, but I have identical psu and I'm using it for both motors through Monster Moto. It starts it's cooling fan rarely and for a short period of time when rig is in use. So it seems that something shorts when you apply pressure to your motor and it quickly heats up your psu. You could go through your wiring with a multimeter and track voltage/current while pressing/releasing the lever. Does your Monster Moto heat up? Have you opened your Wiper motor and checked the wiring inside? Or checked that no wires coming from your motor are connected to the motorcasing?
  17. Pit

    Pit - - - - - - - - - - - - - - - - Gold Contributor

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    I have one remark, if all electrical connections are not perfectly soldered you will run into issues as well.
  18. Scratch

    Scratch Active Member

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    Hey, looking at your pics, if you have not isolated your wiper motor casing from the ground wire, it could be possible that it shorts through your pot connection, if you don't have multimeter, try to remove pot from the axle of your motor and try to run it that way!
  19. Pit

    Pit - - - - - - - - - - - - - - - - Gold Contributor

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    Thank you again for this hint, we should once and for all make a pinned FAQ thread where this issue should be considered as first!
  20. Ralph Manuel

    Ralph Manuel Member

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    Hi, MM does not heat up when the motor is running.
    I did not open yet my motor and I dont know how to isolate earth ground in motor.
    I will do some research about it. That maybe the cause of my problem.