RE: Household temperature sensors

["Dave McLaughlin" <dave@xxxxxxx>]

Hi Quinten,

They are some kind of thermister as far as I can see so no easy way of
interfacing. Maplin used to do one with a 13 bit binary output but not sure
if they still do. They do sell radio controlled cars though :o)

Doing a DS18S20 and a local display would be easy with LED's or such like
and running an RS485 Xap based protocol if you need such a thing. Mine is
currently running a CAN bus link with the SHT11 from Sensirion. I don't
have
a local display but that would be trivial to add. I am going to look at
doing something for X10 as I think the current temperature controllers are
far to expensive. I would use the TW523 (or summit like that) as the X10
interface. With a simple LED and a smart microcontroller I should be able
to
make it fairly low cost.

I'll be posting details on my web in the new year as I have started to put
it all together with photographs etc.

Regards
Dave...

-----Original Message-----
From: Quinten Uijldert [mailto:yahoogroups@xxxxxxx]
Sent: 30 December 2002 11:02
To: ukha_1wire@xxxxxxx
Cc: ukha_d@xxxxxxx
Subject: [ukha_d] Household temperature sensors


Hi all,

Sorry for the cross-post, but I'm not too sure where to ask this.  Does
anyone know if those household temperature sensors (you know the ones with
a
small lcd display, and can be had for a fiver), use the DS1820 for their
sampling, or is it likely some other sensor ?

If they use the DS1820, could you somehow use these with the temperature
logger that Quasar Electronics sell (the one that allows up to 4 DS1820's
on
a serial port), and still maintain the local display of the temperature ?

Q.

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