In what way is using a pair better than using a single conductor.
(It's obvious I know little about this.)
Thanks,
Peter
On Mon, Jun 6, 2016 at 5:58 PM, Jerry Scharf <sch...@lagunawayconsulting.com
> wrote:
> Hi,
>
> I'm not sure what you are doing, but I have two long runs with 10s of
> 18b20s on at least a couple hundred feet of cat5. The way I do it is 1 pair
> for +5, 1 pair for ground and one pair that is out and back data lines to
> the punch down panel (I know it's a bus, but star wiring is way easier in a
> building.) I hate to think what the effective capacitance on the data line
> is. Driven by two different Link interfaces.
>
> I do get occasional errors, but it works pretty well.
>
> jerry
>
>
> On 06/06/2016 04:28 PM, Peter Hollenbeck wrote:
>
> My cable issues don't yet have to do with connectors. From posts I have
> read here I was under the impression that 1wire would work over Cat5 up to
> 100m. Not for me. I am testing with one sensor, a waterproof DS18B20 from
> Adafruit. Longest cable that works is about 45 feet. I have tried a LinkUSB
> and a HobbyBoards powered master. Using a Raspberry Pi.
>
> Peter
>
> On Mon, Jun 6, 2016 at 1:42 PM, Colin Reese <colin.re...@gmail.com> wrote:
>
>> You have a source for ip rated with screw terminals? I never found one. I
>> looked at xlr some time ago and was unsatisfied with what I found. Another
>> equipment vendor I know uses them, but 'pretty waterproof' is insufficient
>> for an end-user product if I sell it on.
>>
>> Colin
>>
>>
>> > On Jun 6, 2016, at 1:29 PM, Steinar Midtskogen <
>> <stei...@latinitas.org>stei...@latinitas.org> wrote:
>> >
>> > I struggled a few years with the most terrible connectors that you can
>> > use outdoors, rj12 or rj45, then switched to XLR connectors, which are
>> > cheap and sturdy. You can get IP67 rated XLR connectors as well, but
>> > even the cheapest XLR connectors seem to work well with basic humidity
>> > protection.
>> >
>> > I made a couple of switchboxes using XLR connectors and put them in
>> > metal mailboxes. They've worked well for about 10 years now.
>> >
>> > -Steinar
>> >
>> > Colin Reese <colin.re...@gmail.com> writes:
>> >
>> >> Of course.
>> >>
>> >> The gender complement is this guy:
>> >>
>> >>
>> http://www.alliedelec.com/lumberg-automation-hirschmann-rsc-4-7/70050935/
>> >>
>> >> They're not cheap at about $20/pr, but they are both IP67 and also
>> >> field-serviceable (internal screw terminals). This is a rare
>> combination
>> >> that customers who do not want to solder really appreciate. I run
>> >> 5V/Data/Gnd/Shield as a standard pinout.
>> >>
>> >> C
>> >
>> >
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> ------------------------------------------------------------------------------
> What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic
> patterns at an interface-level. Reveals which users, apps, and protocols are
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> What NetFlow Analyzer can do for you? Monitors network bandwidth and
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> patterns at an interface-level. Reveals which users, apps, and protocols
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> J-Flow, sFlow and other flows. Make informed decisions using capacity
> planning reports. https://ad.doubleclick.net/ddm/clk/305295220;132659582;e
> _______________________________________________
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