Re: OTish... Automated water pump system

["Tim Hawes" <timsyahoo@xxxxxxxxxxxxxx>]

Howard,

I reckon a webbrick could do this for you, see:
www.o2m8.com
and
http://community.webbricksystems.com/files/folders/datasheets/entry248.aspx
for the data sheet

I'm pretty sure the webbrick used to be xAP enabled, but I don't know
if that is stil the case. The big advantage is that it can be a
totally standalone unit and doesn't need a PC for day to day running.

As well as solar you might also want to think about a small wind
turbine as it's not always sunny...

HTH,

Tim.


On Wed, Jun 4, 2008 at 6:06 PM, howardsixtynine
<howardsixtynine@xxxxxxx> wrote:
> My Dad has asked me to automate his water supply system and I wonder
> if you lot could recommend a source of the hardware for it.
> There is a water tower at the top of the property, a reservoir
> halfway down and a borehole pump at the bottom. I need to monitor the
> level in the tank, and when it drops to 50% switch on the pump. When
> it reaches 90% I open a valve at the reservoir that diverts the water
> into the reservoir. The reservoir needs a sensor so that when it's
> full it closes the valve and the water tower starts to fill again.
> When the water tower reaches 100% I switch off the pump.
> It needs to be wireless, the pump is 600m away - line of site with a
> few trees in the way. The sensor and transmitter in the water tower
> need to be solar powered with battery backup as there is no power
> anywhere near it. I was thinking of a conductive sensor so that they
> can just drop wires into the tank to set the levels.
> The receivers and valve both have mains nearby.
> I can build all the wireless control stuff from modules, but I wonder
> if there's any ready made kit that might be suitable? And if not, can
> anyone recommend a suitable transmitter and receiver kit?
> Also, any idea where I'd get a motorised valve to fit a 90mm OD pipe,
> on a very low budget? Secondhand and leaky wouldn't be a problem, but
> it needs to be reliable.
> Any suggestions much appreciated
> H
>
>
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