Water Detector Problem

Discussion in 'The Projects Forum' started by Telewanger, Feb 19, 2012.

  1. Telewanger

    Thread Starter New Member

    Aug 3, 2008
    8
    0
    Hi,

    I am working on this leak detector project. I am just learning and don't know much about it. Maybe someone has an idea of how to correct the problem. It seems like it might be something very simple, but I just can't seem to figure it out yet.

    Here is a video!

    Thanks!

    http://www.youtube.com/watch?v=4Zmqrh0HprU&feature=youtu.be
     
  2. hgmjr

    Moderator

    Jan 28, 2005
    9,030
    214
    We need a schematic of your circuit and part numbers to be of assistance.

    Can you attach one in this thread?

    hgmjr
     
  3. Telewanger

    Thread Starter New Member

    Aug 3, 2008
    8
    0
    Thanks!

    It is a simple circuit. I found by moving the probes very close to each other my problem is solved, but it looks like crap. I would like to make my own sensor, but I don't know what parts to use or what parts are in the one that I purchased.

    New Video:

    http://www.youtube.com/watch?v=GWn1fRGftw8

    [​IMG]
     
  4. Audioguru

    New Member

    Dec 20, 2007
    9,411
    896
    Pure water is an insulator. Salty water and acid rain conduct a little.
    Why not amplify the tiny current with a transistor?
     
  5. bertus

    Administrator

    Apr 5, 2008
    15,647
    2,346
    Hello,

    There is stated the liquid must be conductive:

    This quote is from this page, where I also could download the manual.
    http://www.smarthomeusa.com/ShopByManufacturer/gri/Item/GRI2800/manual/

    Bertus
     
  6. Telewanger

    Thread Starter New Member

    Aug 3, 2008
    8
    0
    Thanks,

    Does anyone know what transistor that I would use for this simple 9 volt circuit? I have no clue. I am totally new to all of this stuff.
     
  7. bertus

    Administrator

    Apr 5, 2008
    15,647
    2,346
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