1-wire max cable length with BS2P

Archiver

BlankI need to communicate to a Dallas DS18S20 temp. sensor at up to 100 ft
with a BS2P-40. I am using 3 wires (Vdd, Gnd, 1-wire bus, ie not parasite
powered devices) and had problems over 10ft. Has anyone a run @ 100 ft with
a simple interface (Dallas AP Note 148 suggests an RC filter may do the
trick) or whatever works?.

Grim


[noparse][[/noparse]Non-text portions of this message have been removed]

Archiver

Use a 1K pullup on the data line. This will help but at 100 feet and
at the speed of onewire you are asking for alot.

Jason





--- In basicstamps@yahoogroups.com, "Graham Smart" <grahamsmart@t...>
wrote:
> BlankI need to communicate to a Dallas DS18S20 temp. sensor at up
to 100 ft
> with a BS2P-40. I am using 3 wires (Vdd, Gnd, 1-wire bus, ie not
parasite
> powered devices) and had problems over 10ft. Has anyone a run @ 100
ft with
> a simple interface (Dallas AP Note 148 suggests an RC filter may do
the
> trick) or whatever works?.
>
> Grim
>
>
> [noparse][[/noparse]Non-text portions of this message have been removed]