RE: Dallas temp sensors

["Justin" <justin@xxxxxxx>]

Paul,

I know this won't be any good for you (Canadian distributor & build it
yourself) but your post reminded me of this outfit http://www.projectx.com/
(8 sensor board for $31). I thought it might be of interest to others
though.

Like you, I am making do with 4 port Quasar temp board. If I knew what I
was
doing I would have a go at building a parallel port controlled serial
switcher. Ian Birds reply to my splitting serial cable post (thanks Ian!)
and this HS thread
http://homeseer.infopop.net/3/OpenTopic?a=tpc&s=697298074&f=6302952361&m=547
2956675 got me thinking about that. Hmmm!

Having said that, I took delivery of an 8 port serial card last week so
lack
of ports isn't a problem at the moment :-) It does mean I'm retiring my
SIIG
2 port card though, if you (or anyone else) interested!

Justin.

> -----Original Message-----
> From: Paul Gordon [mailto:paul_gordon@xxxxxxx]
> Sent: 28 June 2002 1:43 PM
> To: ukha_d@xxxxxxx
> Subject: [ukha_d] Dallas temp sensors
>
>
> Chaps,
>
> I've come to the conclusion that the 4 inputs provided by my Quasar
> electronics temperature board is going to be insufficient, and
> I'd like to
> increase the capacity to something like double that...
>
> One option would obviously be to buy another 4-port temp. board, but
that
> requires another COM port on the HA PC, and I really don't want to
lose
> another port for this...
>
> What alternative devices can I use to interface DS18020's to a COM
port?
>
> I would like:
>
> - Single COM port
> - 8 or more temperature probes
> - UK supply source
> - off-the-shelf device (no soldering please!)
>
> Any suggestions?
>
> TIA
>
> Paul G.