Is the driveway flooded?

[James Sentman]

Those look like the perfect thing, I’ve never experimented with such stuff, but a couple of those or something similar, look like they would work perfectly. 

Indeed you could use the water proof box with the clear plastic cover I mentioned earlier and just mount them to the clear plastic part. Then all the other stuff inside there to send it to XTension in any of the available ways.



> On Feb 24, 2022, at 3:10 AM, ard jonker <ard.jonker at xs4all.nl> wrote:
> 
> I can vow for this type of sensor that I run off 12V:
> 	https://www.ebay.com/itm/224362543633 <https://www.ebay.com/itm/224362543633>
> 	https://www.ebay.com/itm/384546075886 <https://www.ebay.com/itm/384546075886>
> which sense through non-metal materials with a wall thickness of up to a few mm (that is three sixteenth of an inch if you are used to imperical).
> Don't be fooled by the metal look of the pipe shown in some pictures; the pipe is acryllic, then it does work.
> If the pipe were metal, that wouldn't work if fluid is inside the pipe (I tried ;-) )
> 
> Place a few of them inside a square pipe at key heights, hermetically close the pipe and mount it in the flooding area.
> These units pull down their output pin when sensing water, so it is an easy job with arduino or alike, to detect using a resistor-pulled-up pin.
> Intermittently power them up with long intervals (minutes) to save power; they draw some 10 mA each so batteries quickly drain.
> The job of getting the signals the signal to the home is left as an exercise for the student.
> 
> Ard

Thanks,
 James


James Sentman                       http://www.PlanetaryGear.org		http://MacHomeAutomation.com




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