Re: 1 wire temperature monitoring

[Ben McCormack <yahoogroup@xxxxxxxxxxxxxxxxxxx>]

Nigel

Thanks for sharing this.

Our house currently has many holes in walls and ceilings and I have=20=20
been thinking about 1-wire for temperature monitoring. This hub seems=20=20
perfect.

I do have a couple of questions

How do you mount the sensors around the house? Has anyone found=20=20
anything easy to use?

I assume I you use Cat5 cable to loop into and out of each sensor. I=20=20
guess you 'splice' the sensor onto the Cat5 cable at a suitable point?

Ben


On 3 Jan 2009, at  15:33, Nigel Giddings wrote:

> Hi,
>
> I have been looking at extending my 1-wire temperature monitoring
in=20=20
> the house. 1-wire was never designed for long cable lengths and=20=20
> begins to suffer reflections if the cables get too long... well
I=20=20
> have reached that point.
>
> I want to monitor some of the H/W pipes to things like the
showers=20=20
> and baths, to trigger towel rail heating and also temperatures
on=20=20
> the heat exchanger to see if it actually exchanges heat as well as
a=20=20
> couple more room and equipment rack probes....
>
> However, I have run up against the cable length issue.
>
> What I have found is a Hub that effectively separates three
daisy=20=20
> chains of sensors to enable three lengths of cable with sensors.
>
> http://www.homechip.com/catalog/product_info.php?cPath=3D22&products_id=
=3D109
>
> What is also nice about this is that it connects to the PC via=20=20
> Ethernet so you can remotely position it wherever you have
Ethernet=20=20
> connectivity, even over the internet....
>
> I intend to use with Homeseer with a plug-in called Ultra1wire to
do=20=20
> all the leg work and place the data into virtual devices in
Homeseer=20=20
> which can then be used however I want.
>
> http://forums.homeseer.com/forumdisplay.php?f=3D854
($29.95)
>
> They are in stock, spoke with them today, and will probably order
1=20=20
> on Monday (=A399 + VAT + P&P =A37)
>
> Just thought I would pass it by the list to see if any other=20=20
> alternatives exist....
>
> Nigel
>
> [Non-text portions of this message have been removed]
>
>
>=20



[Non-text portions of this message have been removed]


------------------------------------

********************************************
Limited Time Offer - Free iPhone VAT Calculator
http://berble.com/index.php/component/content/article/109
********************************************=20=20