Re: 1-Wire advice please

["kw1816" <kw1816@xxxxxxxxxxx>]

Very nice Stuart - makes me feel unworthy using choc block :-)
You haven't got a dozen left over have you !

Cheers
Kevin W.

--- In ukha_d@xxxxxxx, Stuart Poulton <stuart.poulton@...>
wrote:
>
> Hi,
>
> I produced some modules a while ago to do exactly this.
>
> Here's some pictures of how Q installed and uses the modules.
>
> http://www.awooga.nl/component/option,com_gallery2/Itemid,29/?
g2_itemId=18916
>
> http://tinyurl.com/2ok57m
>
> Regards
>
> Stuart
>
>
> On Wed, 2007-01-24 at 09:59 +0000, kw1816 wrote:
> > 1-Wire advice please
> >
> > I've just ordered my first set of 1-wire bits, the serial
interface
> > and 10 DS18S20's which should be arriving soon. My plan is to
> > integrate it into Homeseer to provide temperature monitoring in
each
> > room in the house. I'm hoping that someone familiar with 1-wire
> > networks can have a quick look at the following :
> >
> > Network:
> > 1 run of unshielded CAT5e cable, daisy chained to each room from
> > Node 0.
> > When I install the cable I plan on pulling the cable to the end
> > location and work backwards dropping a 6-8" loop through the
ceiling
> > at each location.
> > Does the open end need terminating in any way or just end with a
> > DS1820 connection ?
> >
> > Sensor mounting:
> > I plan to ceiling mount the DS18S20's in these
> > http://cpc.farnell.com/jsp/endecaSearch/partDetail.jsp?
SKU=EN55575
> > For the physical connection to the network I was planning on
using
> > small choc block connector strips with the DS18S20 free on one
side
> > and the cable on the other side. Should fit nicely into the
> > enclosure above.
> >
> > Watchouts:
> > I've seen mention of fitting a 100 ohm pull up resistor to the
> > DS18S20's - is it necesary on this size network ?
> > Is the enclosure above a good choice - I'm not after total
accuracy
> > for the temperature reading but would like it to be
representative.
> > What other options exist for connecting and fixing the DS1820's ?
> >
> > Thanks
> > Kevin W.
>