want a better range ir circuit

Discussion in 'The Projects Forum' started by nazish, Nov 16, 2010.

  1. nazish

    Thread Starter New Member

    Nov 15, 2010
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    0
    hi,
    i m student of BS engg. i want to make a an ir circuit whose range must be greater then 5m....... plz help me out.. i want a complete circuit diagram transmitter and receiver circuit also with a little discription from which i can understand functioning of circuit as i am new...... plz help me........
     
  2. thatoneguy

    AAC Fanatic!

    Feb 19, 2009
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    A place to start would be looking at the function/datasheet of the Sharp Long Range IR sensor, which measures distances up to 5 feet.

    Going out to 5 meters would require ultrasonic from what I have dealt with, unless the object at ~17ft is a mirror.
     
  3. wayneh

    Expert

    Sep 9, 2010
    12,153
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    Most AV remote controls work to this distance, and virtually all are IR based. Perhaps ultrasonic is better at that range for the hobbyist, but certainly IR is a workable technology.
     
  4. thatoneguy

    AAC Fanatic!

    Feb 19, 2009
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    My bad.

    I read "Range must be greater than 5m" as being a distance measurement device. DOH!

    If this is an IR signaling device, with a transmitter at one end, receiver on the other end, then 5m can be done.

    Obvious noise to filter for is sunlight, Televisions/monitors, and fluorescent lights.
     
  5. blueroomelectronics

    AAC Fanatic!

    Jul 22, 2007
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    Always amazing how little effort students want to put into their assignments.
     
  6. wayneh

    Expert

    Sep 9, 2010
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    Can't you remember what it's like being a college student? No free time, and if you had free time, you'd spend it doing things college students do. :rolleyes:

    I agree that a lack of persistence seems to be chronic in this forum, but I'm willing to cut 'em some slack. Some. ;)
     
  7. windoze killa

    AAC Fanatic!

    Feb 23, 2006
    605
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    I agree totally. Especially considering MOST TV remotes will do 5m easily.
     
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