IR Remote Blocker (Practical Joke)

Discussion in 'The Projects Forum' started by Art, Feb 7, 2010.

  1. Art

    Thread Starter Distinguished Member

    Sep 10, 2007
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    61
    Hi Guys,
    I'd like to make a joke IR remote blocker that causes IR interference,
    and prevents remote controlled devices from receiving commands from their remotes.

    What's the simplest way I could do this?

    Would it be enough to pulse an IR LED at pseudo random intervals?
    Cheers, Art.
     
  2. R!f@@

    AAC Fanatic!

    Apr 2, 2009
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    760
    I think you have to take the carrier wave into consideration if you want to jam a receiver.
    it depends on your equipments

    It could be done though

    Rifaa
     
  3. Art

    Thread Starter Distinguished Member

    Sep 10, 2007
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    61
    So I could try using a PWM output of a microcontroller?
    and perhaps another LED with another output source.
     
  4. R!f@@

    AAC Fanatic!

    Apr 2, 2009
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    Tht the basic Idea.
    U have to find the carrier frequency of the device which you wish to jam first, and using a PIC I think you can generate the needed carrier and modulate it with just garbage or junk so tht the receiver cannot identify the original signal.
    Try searching for RC5 and RC6 IR codes

    Rifaa
     
  5. eblc1388

    Senior Member

    Nov 28, 2008
    1,542
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    Doesn't need to be that complicated.

    A 555 oscillates at around 38KHz driving an IR LED will disable 99% of all IR remotes.
     
  6. hgmjr

    Moderator

    Jan 28, 2005
    9,030
    214
    One simple thing you could try is to build a Joule Thief using an IR LED. These guys are very bright and will likely overwhelm the receiver.

    hgmjr
     
  7. Art

    Thread Starter Distinguished Member

    Sep 10, 2007
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    How do I get a 555 to oscillate at 38KHz?
     
  8. lightingman

    Senior Member

    Apr 19, 2007
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  9. Art

    Thread Starter Distinguished Member

    Sep 10, 2007
    785
    61
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