1. keerthi's

    Thread Starter New Member

    Oct 25, 2008
    2
    0
    hi,
    I am preparing a micromouse. Building is over. I wanted to know how to eliminate noise from the surroundings.I have used IR led and phototransistors. I want to know the filter circuits which will eliminate the noise.
     
  2. hgmjr

    Moderator

    Jan 28, 2005
    9,030
    214
    Since you indicate that the design is already complete and fixed for the most part, then the primary method would be to decrease the sensitivity of your receiver and then correspondingly increase the intensity of your IR source.

    hgmjr
     
  3. keerthi's

    Thread Starter New Member

    Oct 25, 2008
    2
    0
    thanks for replying. Do i have to increase the resistance in the phototransistor circuit?
     
  4. hgmjr

    Moderator

    Jan 28, 2005
    9,030
    214
    Can you post a schematic so that we can see the actual components and the circuits being used?

    hgmjr
     
  5. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    You could also characterize "the noise" that you wish to eliminate.
     
  6. gvr_p

    New Member

    Nov 5, 2008
    6
    0
    I think you are not using any modulating freqency. try to use some freqency to modulate the signal better 38 KHz. the receivers are readily available like TSOP1738. the noise become reduced.
     
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