Reply by macl...@gmail.com●August 24, 20222022-08-24
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
Reply by Phil Hobbs●August 24, 20222022-08-24
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.nethttp://hobbs-eo.com
Reply by Marcos Loyola●August 22, 20222022-08-22
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