Re: Re: Automatic watering

["Malcolm Lansell" <mlansell@xxxxxxx>]

Do you have the valve the right way round?  It may be closed by the water
pressure (but obviously only if the water is flowing the right way)

Mal



----- Original Message -----
From: "Rob Lamb" <rjl@xxxxxxx>
To: <ukha_d@xxxxxxx>
Sent: Wednesday, December 03, 2003 3:49 PM
Subject: [ukha_d] Re: Automatic watering


> Tried that but to no avail. Can't think of what to do next!
>
> Rob
>
> --- In ukha_d@xxxxxxx, "Tim Fletcher"
<timfletcher@b...>
> wrote:
> > reverse the polarity to close the valve?
> >
> >   ----- Original Message -----
> >   From: Rob Lamb
> >   To: ukha_d@xxxxxxx
> >   Sent: Wednesday, December 03, 2003 11:48 AM
> >   Subject: [ukha_d] Automatic watering
> >
> >
> >   I need a little help with a new project. Up until now I've used
> a
> >   standalone Gardena water computer to control my irrigation
> system
> >   but as this now seems to have failed and I now also have
> Homevision
> >   I thought I try to control the valve part of the water
computer.
> >   Taking the water computer apart there are just a pair of wires
> that
> >   lead to what looks like an electromagnet on the valve. Connect
> 9V DC
> >   to these leads (that's the same as the battery the computer
> used)
> >   and hey presto water flows through the valve. But here's the
> >   problem. Disconnect the power and - the water still flows! Any
> ideas
> >   on what I'm doing wrong or what to do next?
> >
> >   Regards,
> >
> >   Rob
> >
> >
> >         Yahoo! Groups Sponsor
> >               ADVERTISEMENT
> >
> >
> >
> >
> >   UKHA 2004: 15th and 16th May 2004
> >
> >   http://www.automatedhome.co.uk
> >   Post message: ukha_d@xxxxxxx
> >   Subscribe:  ukha_d-subscribe@xxxxxxx
> >   Unsubscribe:  ukha_d-unsubscribe@xxxxxxx
> >   List owner:  ukha_d-owner@xxxxxxx
> >
> >   Your use of Yahoo! Groups is subject to the Yahoo! Terms of
> Service.
> >
> >
> > [Non-text portions of this message have been removed]
>
>
>
> UKHA 2004: 15th and 16th May 2004
>
> http://www.automatedhome.co.uk
> Post message: ukha_d@xxxxxxx
> Subscribe:  ukha_d-subscribe@xxxxxxx
> Unsubscribe:  ukha_d-unsubscribe@xxxxxxx
> List owner:  ukha_d-owner@xxxxxxx
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>