RE: HVAC

["Brian G. Reynolds" <brian@xxxxxxx>]

Hi guys,

Maplin sell the DS1820 @ £5.99 ea, order No NJ85G. They are displayed on
page 294 of the current Maplin catalogue. I think the replacement is
DS18S20, but as yet I have not seen any.

I have 5 on one wire at the moment including one in a freezer which now
reads in the negative after a chip upgrade compliments of Li.

I have not had any errors (HEX 255) for ages now although the HV Status
Page
regularly displays "Controller Error # 118,

When fitting them I tried fitting into a transistor holder (I think) but I
seemed to be getting errors so eventually plumbed for soldering them, so
far
so good. I did have one corrode very early on and one leg fell off! but I
have soldered a cable to the tiny stump and it still seems to work! 'mazin.

Now getting the results into Excel is another story........

Brian.


> -----Original Message-----
> From: Phil Harris [mailto:phillip.harris1@xxxxxxx]
> Sent: 03 May 2001 18:49
> To: ukha_d@xxxxxxx
> Subject: RE: [ukha_d] HVAC
>
>
>
> They're made by Dallas Semiconductors and are being phased out with a
new
> (compatible) model phased in (the DS1282 or something like that) ...
> apparently the newer version has improved stability over the long
term.
> (Drifts less.)
>
> They're about £6 each and Maplin did them, as did RS and I think
> that Rapid
> Electronics do them too. I know that a guy called Brian Reynolds has
been
> using them for monitoring his Meerkat pens and runs.
>
> Phil
>
> > -----Original Message-----
> > From: Mark Harrison [mailto:Mark.Harrison@xxxxxxx]
> > Sent: 03 May 2001 18:39
> > To: 'ukha_d@xxxxxxx'
> > Subject: RE: [ukha_d] HVAC
> >
> >
> > URL/supplier?
> >
> > Mark Harrison
> > Head of Systems, eKingfisher
> >
> >
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> >
> > -----Original Message-----
> > From: Phil Harris [mailto:phillip.harris1@xxxxxxx]
> > Sent: 3 May 2001 18:31
> > To: ukha_d@xxxxxxx
> > Subject: RE: [ukha_d] HVAC
> >
> >
> >
> > If you have HomeVision then just use CAT5 and those DS1820 (or
> is it 1280)
> > temperature probes. Stick 'em in a frost stat housing to make 'em
> > look neat
> > and Bob's your aunties shagging piece...
> >
> > Phil
> >
> > > -----Original Message-----
> > > From: Mark Harrison [mailto:Mark.Harrison@xxxxxxx]
> > > Sent: 03 May 2001 18:15
> > > To: 'ukha_d@xxxxxxx'
> > > Subject: [ukha_d] HVAC
> > >
> > >
> > > Guys,
> > >
> > > Been thinking about HVAC control - well, "H",
anyway ;-)
> > >
> > > The X-10 pollable thermostat on letsautomate seemed nice,
until
> > I saw the
> > > price.
> > >
> > > What I actually want is a small relay, which is easy, and a
bunch of
> > > thermostats that I can poll for temperature.
> > >
> > > Ideas?
> > >
> > > Mark Harrison
> > > Head of Systems, eKingfisher
> > >
> > >
> > >
> > > Your use of Yahoo! Groups is subject to
> http://docs.yahoo.com/info/terms/
> >
> >
>
>
>
>
>
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