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Protecting My Circuit From Burn Out

Discussion in 'DIY Motion Simulator Building Q&A / FAQ' started by MagicMike, Jan 28, 2014.

  1. MagicMike

    MagicMike New Member

    Joined:
    Jan 26, 2014
    Messages:
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    Balance:
    961Coins
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    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino, Motion platform
    I have a arduino mega 2560 , 3 h-bridges(3-36vols 30A max) and 3 wind shieldmotors 12v 15A.
    How i can protect my arduino, the mosfet bridges and the motors from burn out? I know that my hardware is cheap and the bridges also. Can you give me some advices and maybe some kind of circuit? Thank you very much!
    MagicMike, Jan 28, 2014
    #1
  2. eaorobbie

    eaorobbie Well-Known Member SimTools Developer Gold Contributor

    Joined:
    May 26, 2009
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    Occupation:
    CAD Detailer
    Location:
    Ellenbrook, Western Australia
    Balance:
    20,440Coins
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    +1,684 / 23 / -2
    My Motion Simulator:
    2DOF, DC motor, JRK, SimforceGT, 6DOF
    Ok you could simple place a fuse in the main power wires from the power source to the H Bridges, if worried about Ard and H Bridge connection a simple Opto Isolator circuit can be used too.
    I use Jrks this is all built in to them.
    Something along theses lines has been recommended before.
    https://www.sparkfun.com/products/9118
    • Useful Useful x 1
    eaorobbie, Jan 28, 2014
    #2
  3. MagicMike

    MagicMike New Member

    Joined:
    Jan 26, 2014
    Messages:
    24
    Balance:
    961Coins
    Ratings:
    +2 / 0 / -0
    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino, Motion platform
    Thank you very much for your response @eaorobbie. So fuses and opto-isolation will be good for my cheap circuit parts :)
    MagicMike, Jan 28, 2014
    #3
  4. eaorobbie

    eaorobbie Well-Known Member SimTools Developer Gold Contributor

    Joined:
    May 26, 2009
    Messages:
    2,574
    Occupation:
    CAD Detailer
    Location:
    Ellenbrook, Western Australia
    Balance:
    20,440Coins
    Ratings:
    +1,684 / 23 / -2
    My Motion Simulator:
    2DOF, DC motor, JRK, SimforceGT, 6DOF
    Might help to save them as said I dont need them so never hooked one up but inturn I use a 40amp fuse on the power side connecting to my Jrks as its there recommended max amps, but will handle a little but more than that with decent cooling.
    A basic fuse and isolated the Ard from the H Bridges could save the system if one of those wipers brown out. No common thing to happen but better to be safe than sorry.
    I was hoping someone who has hooked them up would pop in and comment.
    • Useful Useful x 1
    eaorobbie, Jan 28, 2014
    #4