fwiw I ran into a similar problem. I am using cat5e cables throughout the
house with a sensor in each room. Each cat5e drop is terminated at a
panel, and the 1wire signal is looped up to each sensor on the blue wire
and back on the orange, and then up to the next sensor etc. I found that
when I installed the last sensor in the series, all sensors dropped off.
I traced the problem back to looping the 1wire signal on the last sensor
back to panel and just leaving it floating. As soon as I put a sensor
right at the end of the 1 wire bus the problem went away.
On 27 January 2014 10:02, Eric Vickery <eric...@hobby-boards.com> wrote:
> Colin,
>
> Are your devices truly connected in series or are there some stubs?
>
> If you have a power injector in the system I'm not sure why the LinkUSB
> light would dim at all.
>
> Eric
>
> On Jan 27, 2014, at 10:46 AM, Colin Tinker <colin.tin...@gmail.com> wrote:
>
> > Jim
> >
> > All my cables are EIA 568B Some I made some I bought. It worked fine
> > until the lightning strike which took out a fair few sensors and the 6
> > port hub. I have now made a power injector and have all the sensors in
> > series. On short 1 meter cables all sensors work connected together in
> > series. As soon as I add a longer cable they will all disappear from
> > the network.
> >
> > All cables test fine on a cable tester and work fine on gig Ethernet,
> > there are no shorts and the voltages appear on the end of the long cable
> > at 12 and 4.95 volts. The LinkUSB light stays on very dimly with a long
> > cable connected even with nothing connected to it.
> >
> > I am at a loss as to where to look next.
> >
> > Colin
> >
> >
> > On 27/01/14 02:06, owfs-developers-requ...@lists.sourceforge.net wrote:
> >> Message: 3
> >> Date: Sat, 25 Jan 2014 11:56:50 -0500
> >> From: Jim Lill <j...@jimlill.com>
> >> Subject: Re: [Owfs-developers] 1-wire network problems
> >> To: "OWFS (One-wire file system) discussion and help"
> >> <owfs-developers@lists.sourceforge.net>
> >> Message-ID: <52e3ecd2.8010...@jimlill.com>
> >> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
> >>
> >>
> >> The comparison of CAT5 and 1-wire performance may be misleading. Neither
> >> system uses all and/or the same wires in the cable.
> >>
> >>
> http://www.bb-elec.com/Landing-Pages/CAT5e-Cable-Wiring-Schemes/ntron_cat5e_cable_schemes_dia5.aspx
> >>
> >> https://www.hobby-boards.com/store/site_images/howto/rj45.jpg
> >
> >
> >
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