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You are here: Home / Topics / Some question about the project “bidirectional visitor counter using IR sensor”

Some question about the project “bidirectional visitor counter using IR sensor”

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Projects › Projects › Some question about the project “bidirectional visitor counter using IR sensor”

  • This topic has 1 reply, 2 voices, and was last updated 14 years, 2 months ago by dagakshay.
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  • April 11, 2011 at 8:31 am #858
    Leung
    Participant

    I have some question about the project “bidirectional visitor counter using IR sensor” which are found in the following link:

    http://www.engineersgarage.com/microcontroller/8051projects/Bidirectional-visitor-counter-AT89C51-circuit?destination=node%2F267

     

    1. I would like to know what is the part number of the IR transmitter (LED) and the IR receiver?

    2. In the video I found the IR transimtter and the IR receive placed together, are there using a mirror for the reflection? And how long of the effective distance?

     

    Thanks

    pwleung

    April 11, 2011 at 2:17 pm #5943
    dagakshay
    Participant

    hello leung,

    it says the page not found, can past the (proper) link again

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