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  • Detect the turbidity

    From Marcos Loyola@21:1/5 to All on Mon Aug 22 10:17:10 2022
    Hello good day!
    I need a simple circuit to detect the turbidity of the reuse water from the washing machine, that is, discard the 1st water and reuse the others, a very simple circuit for a low-income community. Thank you Marcos

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  • From Phil Hobbs@21:1/5 to Marcos Loyola on Wed Aug 24 14:53:58 2022
    Marcos Loyola wrote:
    Hello good day! I need a simple circuit to detect the turbidity of
    the reuse water from the washing machine, that is, discard the 1st
    water and reuse the others, a very simple circuit for a low-income
    community. Thank you Marcos


    On a good day, you can measure the turbidity using an Arduino, a LED, a phototransistor, and a resistor.

    The problem normally has more to do with how to keep the optical window clean.(*) That might be easier with a clothes washer, because the flow
    is pretty strong and frequently has a lot of detergent and bubbles,
    which should help.

    It'll need some experimenting, though.

    How high-tech is your setup? I assume you have a storage tank, but how
    does the water get in and out, and how is that controlled?

    Cheers

    Phil Hobbs

    (*) If you have the time, and a nearby library can get a copy, Mark
    Johnson's "Photodetection and Measurement" is an excellent read. Mark
    was the head of quality assurance for a bit water utility in England,
    and really knows turbidity measurements. A lot of it is quite
    accessible at hobbyist level.

    --
    Dr Philip C D Hobbs
    Principal Consultant
    ElectroOptical Innovations LLC / Hobbs ElectroOptics
    Optics, Electro-optics, Photonics, Analog Electronics
    Briarcliff Manor NY 10510

    http://electrooptical.net
    http://hobbs-eo.com

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    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From macloyola@gmail.com@21:1/5 to Phil Hobbs on Wed Aug 24 16:12:59 2022
    On Wednesday, August 24, 2022 at 3:54:04 PM UTC-3, Phil Hobbs wrote:
    Marcos Loyola wrote:
    Hello good day! I need a simple circuit to detect the turbidity of
    the reuse water from the washing machine, that is, discard the 1st
    water and reuse the others, a very simple circuit for a low-income community. Thank you Marcos

    On a good day, you can measure the turbidity using an Arduino, a LED, a phototransistor, and a resistor.

    The problem normally has more to do with how to keep the optical window clean.(*) That might be easier with a clothes washer, because the flow
    is pretty strong and frequently has a lot of detergent and bubbles,
    which should help.

    It'll need some experimenting, though.

    How high-tech is your setup? I assume you have a storage tank, but how
    does the water get in and out, and how is that controlled?

    Cheers

    Phil Hobbs

    (*) If you have the time, and a nearby library can get a copy, Mark
    Johnson's "Photodetection and Measurement" is an excellent read. Mark
    was the head of quality assurance for a bit water utility in England,
    and really knows turbidity measurements. A lot of it is quite
    accessible at hobbyist level.

    --
    Dr Philip C D Hobbs
    Principal Consultant
    ElectroOptical Innovations LLC / Hobbs ElectroOptics
    Optics, Electro-optics, Photonics, Analog Electronics
    Briarcliff Manor NY 10510

    http://electrooptical.net
    http://hobbs-eo.com
    Grateful for the feedback

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    * Origin: fsxNet Usenet Gateway (21:1/5)