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SDI-12 Interface

 
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welshpool

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Joined: 28 Nov 2007
Posts: 1
Location: Australia

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PostPosted: Sun Dec 02, 2007 11:31 pm    Post subject: SDI-12 Interface Reply with quote

Does any one have code or circuits for adding a SDI-12 interface to a 8051 micro. The Sdi-12 bus is very common in the environmental sensor/logger market. More info at "www.sdi-12.org"
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ReadTheDataSheets

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Joined: 04 Dec 2007
Posts: 2

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PostPosted: Tue Dec 04, 2007 5:09 pm    Post subject: sdi circuit Reply with quote

What is the problem?

Page 34 of the SDI-12 specs gives recommended circuit.
http://www.sdi-12.org/sdi-12/SDI-12_version1_3_2005 July18 2005.pdf
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ReadTheDataSheets

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Joined: 04 Dec 2007
Posts: 2

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PostPosted: Tue Dec 04, 2007 5:22 pm    Post subject: sdi circuit Reply with quote

sorry, right url is.

http://www.sdi-12.org/sdi-12/SDI-12_version1_3_2005%20July18%202005.pdf
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Starlord

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Joined: 22 Sep 2005
Posts: 17
Location: Lincoln, NE USA

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PostPosted: Thu Dec 06, 2007 1:53 am    Post subject: Reply with quote

I recently worked on a SDI-12 test plug for an instrument that we build. I was developing it on an ATMega16, but it was intended for an ATtiny45. The project got dropped so the code is not quite done, but it might be of some assistance.
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