1-Wire Weather Station

Archiver

I am just starting to develop a program to read the 1-Wire Weather
Station using a BS2P. I have looked thru the archives but did not find
much discussion on this topic. Has anyone been succesful at
reading the weather station devices?

At this point, I can address and read several DS1820 1-wire temp
sensors mounted on the BS2P demo board. However, as soon as I connect
the weather station, I can no longer get valid communications. The
weather station works fine using the DS9097U serial to 1-wire
interface and DalSemi's ibViewer software. I'm using CAT5 cable and
the weather station is only about 10 feet away.

I've looked at the signal with an oscilloscope and other than a slight
loading, the signal appears OK. I've played with various pull-up
resistors down to 1K with no luck.

I'm also interested in what others are doing with 1-wire devices. i.e.
has anyone used a DS9097U serial to 1-wire adapter with a BS2? Is
anyone else working with the 1-wire weather station?

Thanks!
Tim Bitson
Tucson, AZ

Archiver

Tim,

You are on the weather@d... list also right? because thats
ALL they talk about is weather station stuff and almost anyone
there speaks "stamp" fairly well also.

HTH

Dave

---

Original Message

---

From: <tbitson@a...>
To: <basicstamps@yahoogroups.com>
Sent: Monday, November 19, 2001 9:22 AM
Subject: [noparse][[/noparse]basicstamps] 1-Wire Weather Station


> I am just starting to develop a program to read the 1-Wire Weather
> Station using a BS2P. I have looked thru the archives but did not find
> much discussion on this topic. Has anyone been succesful at
> reading the weather station devices?
>
> At this point, I can address and read several DS1820 1-wire temp
> sensors mounted on the BS2P demo board. However, as soon as I connect
> the weather station, I can no longer get valid communications. The
> weather station works fine using the DS9097U serial to 1-wire
> interface and DalSemi's ibViewer software. I'm using CAT5 cable and
> the weather station is only about 10 feet away.
>
> I've looked at the signal with an oscilloscope and other than a slight
> loading, the signal appears OK. I've played with various pull-up
> resistors down to 1K with no luck.
>
> I'm also interested in what others are doing with 1-wire devices. i.e.
> has anyone used a DS9097U serial to 1-wire adapter with a BS2? Is
> anyone else working with the 1-wire weather station?
>
> Thanks!
> Tim Bitson
> Tucson, AZ
>
>
>
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Archiver

> I'm also interested in what others are doing with 1-wire devices. i.e.
> has anyone used a DS9097U serial to 1-wire adapter with a BS2? Is
> anyone else working with the 1-wire weather station?
>
Is this the passive circuit one with the latch? It supplies direct connection to
the I
Button on 2 of the DB9 pins so can be used with micros or the seril port. I
don't think
the BS2 will work direct.

Archiver

No, the DS9097U is an active serial to 1-wire converter. It is parasitically
powered from the PC serial port. Communications is via SERIN and SEROUT.

Tim


> I'm also interested in what others are doing with 1-wire devices. i.e.
> has anyone used a DS9097U serial to 1-wire adapter with a BS2? Is
> anyone else working with the 1-wire weather station?
>
Is this the passive circuit one with the latch? It supplies direct connection
to the I
Button on 2 of the DB9 pins so can be used with micros or the seril port. I
don't think
the BS2 will work direct.