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Thread: MS13 Field of vision

  1. #1
    Automated Home Jr Member
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    Default MS13 Field of vision

    Does anyone have a diagram of the area covered by the MS13. I'm trying to get it avoid detecting our cats walking down the garden. The sensor is mounted at 5ft and it's parallel to the ground. Need to find some way of blocking anything below about 3ft from the ground.

  2. #2
    Automated Home Jr Member Jimll's Avatar
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    Default Re: MS13 Field of vision

    Either place it a bit higher or put a bit of tape along the bottom quarter of the window.

  3. #3
    Automated Home Jr Member
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    Default Re: MS13 Field of vision

    Yep, take a look at http://info.spruitnet.nl/automation/ms13.html

    Regards,

    Richard
    ----
    More home automation on http://info.spruitnet.nl

  4. #4
    Automated Home Jr Member
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    Default Re: MS13 Field of vision

    Quote Originally Posted by Jimll
    Either place it a bit higher or put a bit of tape along the bottom quarter of the window.


    Am I correct in assuming the middle third of the sensor in the picture detects directly ahead, and the top and bottom thirds detect above and below?

    If so I think covering the visible bottom third should stop detection below the height of the sensor.

  5. #5
    Moderator toscal's Avatar
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    Default Re: MS13 Field of vision

    I think the top part of the lens actually makes the beam point down, focusing it near to the sensor. From what I can remember about these sensors, they have a range of about 5 to 5.5m at a 45 degree angle downwards, and about 10 to 12m at 0 degrees.
    I've installed some outdoor PIR sensors that came with little blocking clips so you could actually block off bits of the lens. Black tape or for a more permanent solution black nail varnish works quite well. But experiment with tape first.

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