Re: Cat-5e

["Raymond Kelly" <ray@xxxxxxxxxxxxx>]

Hi Nigel,
Haven't even looked at the PIR's yet. I was going to use the CBus
PIR's - but they are too expensive. Currently I have 30 DS18S20. I
poll every 5 mins. It takes a second per sensor. All of these are on a
single Cat6 cable. Its working reliably.
Sorry did not make clear, but am not using yet, but the next stage is
too use the hub and then have 3 branches. Thanks for heads up on
broadcast
Its all C code on linux, based around the 'select' loop!!


On 11/04/06, Nigel Giddings <nigel@xxxxxxx> wrote:
> Ray,
>
> Does this work with the Mini PIR?
>
> The reason I ask is that the temperature, humidity detectors are
polled
> whereas the PIR broadcasts...
>
> Nigel
>
> -----Original Message-----
> From: Raymond Kelly [mailto:ray@xxxxxxx]
> Sent: 11 April 2006 16:31
> To: ukha_d@xxxxxxx
> Subject: Re: [ukha_d] Cat-5e
>
> I have not used yet but I intend to use this hub
> http://www.hobby-boards.com/catalog/product_info.php?products_id=1511
> Then I will hang off 3 cables - temp sensors, PIR and a humidity
> branch. I need to poll the PIR and humidity much more than the temp
> sensors branch.  I'm writing my own software to run on a solid state
> linux controller.
> Not to my knowledge is there anything commercial that deals with
> 1-wire like this, thats why me and others I'm sure roll our own.
>
> On 11/04/06, Sullivan, Glenn <gsullivan@xxxxxxx> wrote:
> > You guys that have lots of 1-wire devices... How do you
"hub" them
> > together?  I've seen plans for a "1-wire switch" that
use one wire
> > flip-flops to switch on and off different segments, but haven't
been
> > ambitious enough to build one...
> >
> >
> > Glenn Sullivan, MCSE+I MCDBA
> > David Clark Company Inc.
> > -----Original Message-----
> > From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On Behalf
> > Of Neil Fuller
> > Sent: Tuesday, April 11, 2006 11:03 AM
> > To: ukha_d@xxxxxxx
> > Subject: Re: [ukha_d] Cat-5e
> >
> > Raymond Kelly wrote:
> > I am using Cat5e for my dallas 1-Wire sensors and part of the
cable
> run
> > I want to bury in screed/concrete.
> > Will this cable be OK in concrete without another covering?
> >
> > From a regs point of view, it's probably OK but the slightest
movement
> > in the concrete and you'll have a broken wire.
> >
> > Put the CAT5 through a piece of plastic conduit and screed over
that.
> If
> > you make sure that you can get to the ends of the tube, you'll
have
> > somewhere to pull more cables through too - Always useful ;-)
> >
> > HTH
> >
> > Neil
> >
> >
> >
> >
> >
> >
> > Yahoo! Groups Links
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> > Yahoo! Groups Links
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> Yahoo! Groups Links
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> ------oooo0oooo-------
> 11/4/2006
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