Paul

Yes the hardware master is still there.  I agree it looks like a
hardware fault but all the cable and devices test fine.  All the cables
work as gig Ethernet cables.  I have oone 10 meters long that will not
work on 1-wire as described but I am using it now to connect to my BT
Router.  If I just connect one temp sensor on a short wire it is fine,
another on short wire fine use a long cable such as the 10 meter one and
all devices disappear from the bus even with nothing onb the other end
of the cable the original temp sensor is gone.

Why I am puzzled as you said below until the lightning strike it all
worked fine.  I will have to get my scope out of the loft and check for
excessive noise being picked up the only thing I haven't checked for yet.

Colin

> -------------- next part --------------
>
> Message: 4
> Date: Sat, 25 Jan 2014 08:34:27 -0500
> From: Paul Alfille <paul.alfi...@gmail.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:
>       <CAP_SGzcms_hUtVe6njerdicMvRq7E6cw1_N09Ak=opxh1ng...@mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Do you have a volt meter? The dimming light suggests that there is enough
> of a short circuit to pull down power.
>
> I'm a little unclear on the total picture.
> 1. You had a well functioning system.
> 2. Lightning strike took out a number of devices, including computers,
> 1-wire devices and masters.
> 3. You've replaced faulty devices, restored the same software setup and
> versions, and tested the devices individually.
> 4. Adding a particular device (with a long cable run) causes all devices to
> disappear from the 1-wire network.
> 5. You tried more than one master.
>
> It still sounds like a hardware issue. I presume your 1-wire master is
> bus-powered and that you have a powered hub for it. When all devices
> disappear, is the 1-wire master still there?
>
>
>
>


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