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AVR is picking noise

Discussion in 'AVR' started by aamir shabbir, Dec 16, 2014.

  1. aamir shabbir

    aamir shabbir Member

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    Hi friends............im working on a h bridge project which is used to drive a wheel chair but the problem is AVR controller is picking noise and doing something which is not in code and it seems that the noise of motor or relay is disturbing it how to get rid of that plz guide me
     
  2. MikeMl

    MikeMl Well-Known Member Most Helpful Member

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    Get rid of the ground-loop you created by how you wired the power supply to the Atmel and the H-Bridge.
     
  3. DerStrom8

    DerStrom8 Super Moderator Most Helpful Member

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    I totally read the thread title wrong.... :p

    I expect MikeMl is correct in his assumption that the issue is due to a ground-loop, but seeing your schematic would tell us for sure.

    Regards,
    Matt
     
  4. dave

    Dave New Member

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  5. aamir shabbir

    aamir shabbir Member

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    the ground of h bridge is connected with micro controller ground both r shorted what should i do to get rid of noise ?
     
  6. aquamon

    aquamon Member

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    Use TIP122's in this circuit [K.I.S.S.]
     
  7. Embedded.Ing

    Embedded.Ing New Member

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    please post your schematic if you want more help so i can chick if there is any mistake done
     

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