Re: More on iButtons

["Stuart Grimshaw" <stuart@xxxxxxx>]

Andy,

I have a little 1-wire net set up here in my home office. The 1-wire stuff
should work fine (and cheaply) for for, though in your setup you may need
to
run a new cable.

I don't know of any device that will actually send the data down a network.
I guess you could connect it to your serial port hub too. (Can you give me
more details of those? I've never heard of them before) You could take a
fly
lead directly from patch panel to the monitoring PC, rather than the
network
hub. CAT5 is highly thought of for 1-wire apps, and is often the cable of
choice.

I baught the thing in a kit (DS9091k), which came with 2 DS1820 temp
sensors, a comm port adaptor (though one without the built in line drivers,
so distance may be a problem) plus a host of other stuff to play with too.
If you go for one of those kits, (and at about 50 quid from Farnell why
not?) I'd seriously think about buying one of the newer comm port adaptors
to go with it, they are much easier to program, and source code is much
easier to come by for most platforms.

---------------------------------------
Stuart Grimshaw
Schoolsnet LTD             Special
www.schoolsnet.com         Projects
Developer
stuart@xxxxxxx
---------------------------------------

----- Original Message -----
From: Andy Powell <Andy@xxxxxxx>
To: <ukha_d@xxxxxxx>
Sent: 17 May 2000 22:42
Subject: [ukha_d] More on iButtons


> Hi,
>
> I've got a question (or two) regarding the temperature iButtons which
I
hope someone out there can answer. I'm actually loking for a relatively
cheap solution to temperature monitoring in our computer room at the
office.
I'd like to be able to remotely (well from another floor) monitor the
temperature of the computer room at various points. So far I've looked at
the Pico RH02/RH03 and am thinking of using them/it in conjunction with a
serial port hub.The serial port hub basically has 4 or 8, 9 pin serial
ports
and a 10 base-t connector, with software installed on the client the serial
ports appear as COMx: so any standard comms application could use them.
Whilst out walking the dogs tonight I suddenly thought about the
possibility
of using iButtons as a solution. What I'd like to know is:
>
> 1. Can the temperature iButton give out real-time data or does it just
'record' it and then pass it back when 'connected'?
>
> 2. Has anyone tried multiple iButtons on a on a 'LAN'?
>
> 3. Anyone got any other possible solutions?
>
> many thanks
>
>
> Andy
>
>
>
> --- Tag-it V1.0 (c) Andy Powell 1998
> The gene pool could use a little chlorine.
>
>
>
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> Remember four years of good friends, bad clothes, explosive chemistry
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