Re: Moisture

["Bov" <bov@xxxxxxxxxxxx>]

So do you have to keep it constantly topped up with water for it to work?



--- In ukha_d@xxxxxxx, "Steve Morgan" <steve@...> wrote:
>
> I've bought one of those (thank for the recommendation).
>
> Opened it up and it's basically a pressure switch that shorts a
resistor
> across to terminals.
>
> You fill it up with water and, presumably, as the soil dries, it tries
to
> 'suck' the water through a porous ceramic tip under osmosis, reducing
the
> pressure.
>
> It should be simple enough to wire to virtually anything.
>
> Good find, Steve.
>
> Steve
>
>
> -----Original Message-----
> From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On Behalf Of
> Steve
> Sent: 19 May 2009 10:23
> To: ukha_d@xxxxxxx
> Subject: [ukha_d] Re: Moisture
>
> --- In ukha_d@xxxxxxx, "Bov" <bov@> wrote:
> >
> >
> > What is the best way to measure soil moisture using a HomeVision
unit?
> Anyone tried this and have recommendations? I want to adapt my garden
> watering schedule when the ground is already damp to save on water.
> >
> > Cheers.
> >
> > Bov.
> >
>
> Have you considered a hack of one of the moisture sensors from Gardena
> automatic watering systems?
>
> eg: http://tinyurl.com/r3tmpu ? (it isn't
my auction!)
>
> Steve
>
>
>
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