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You are here: Home / Topics / Bi Directional Visitor Counter circuit has problem

Bi Directional Visitor Counter circuit has problem

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Microcontroller › 8051 › Bi Directional Visitor Counter circuit has problem

  • This topic has 1 reply, 1 voice, and was last updated 13 years, 11 months ago by Amrita.
Viewing 2 posts - 1 through 2 (of 2 total)
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    Posts
  • February 1, 2012 at 5:42 pm #1691
    Amrita
    Participant

    The project of automatic bi-directional visitor counter has lots of issues.

     

    1. The LM358 shown on the circuit : shows 2&3 as input but out put is taken from pin-7, it should be pin-1.

    2. In the circuit P1.5 & 1.6 are shown for up and down, wheras in the code P3.5 & 3.6 are used.

    February 1, 2012 at 5:44 pm #7099
    Amrita
    Participant

    also it assumes that when there will be an obstruction between IR-TX & IR-RX the output will be high, which is wrong, the output from OPAMP will be low.

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