Passive Infra-red Sensor with microcontroller

Discussion in 'Embedded Systems and Microcontrollers' started by ching fong kee, Feb 25, 2011.

  1. ching fong kee

    Thread Starter Member

    Jun 23, 2010
    42
    0
    Hi, everyone..
    The output of PIR sensor is not stable and the output will drop until zero when there is no movement after 3 seconds.

    is it possible to use software to make the ON time longer before it goes to "low"?
     
  2. Markd77

    Senior Member

    Sep 7, 2009
    2,803
    594
    Yes, any microcontroller will be able to do that.
     
  3. be80be

    Senior Member

    Jul 5, 2008
    432
    57
    PIR work a lot of ways some will stay on till they time out. And some have no time out.

    But most all of them have to warm up to work right.

    Bottom line there slow. If your not moving.
     
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