Still a Newbie, 1-wire devices

Archiver

I'm the happy owner of a BS2p and 4off DS18S20 and having everything
working. Now that's on the board. Trying to extend cables to about
10 meters, problems starts. I'm using 4,7 k pull-up. Cables are 0.14
mm2 copper, 3 wire shielded.
Any idea what cables to use or other advice.

Thanks

Archiver

Drop your pullup resistor down to 1K this should fix it.

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Original Message

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From: "lars505050" <ls@l...>
To: <basicstamps@yahoogroups.com>
Sent: Wednesday, February 18, 2004 3:31 PM
Subject: [noparse][[/noparse]basicstamps] Still a Newbie, 1-wire devices


> I'm the happy owner of a BS2p and 4off DS18S20 and having everything
> working. Now that's on the board. Trying to extend cables to about
> 10 meters, problems starts. I'm using 4,7 k pull-up. Cables are 0.14
> mm2 copper, 3 wire shielded.
> Any idea what cables to use or other advice.
>
> Thanks
>
>
>
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Archiver

In a message dated 2/18/2004 3:36:00 PM Eastern Standard Time,
ls@l... writes:


> I'm the happy owner of a BS2p and 4off DS18S20 and having everything
> working. Now that's on the board. Trying to extend cables to about
> 10 meters, problems starts. I'm using 4,7 k pull-up. Cables are 0.14
> mm2 copper, 3 wire shielded.
> Any idea what cables to use or other advice.
>

If it were me I'd go RF or IR over that distance. Notwithstanding, you might
try a .1uf at each end of the data cable. Even with shielding your going to
pick up some AC. Also, DO NOT ground the remote end of the shield.

Sid Weaver.


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