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Detect the turbidity

Started by Marcos Loyola August 22, 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
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
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