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???
04/12/07 07:52
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#137021 - I had trouble with
Responding to: ???'s previous message
I had a lot of trouble with a short distance 1wire app. My first problem was the week pulldown of the micro I was using, this was solved by using a Maxim/Dallas i2c->1wire chip (expensive). Next was the cable - twisted pair works much better than just a pair of wires. Signal integrity was a major problem. Personally, I wouldn't try it over any great distance! RS485 is much more robust.


List of 18 messages in thread
TopicAuthorDate
dallas one wire : working range ?            01/01/70 00:00      
   Nothing exact, but            01/01/70 00:00      
   a rough translation from our local hw mailing list            01/01/70 00:00      
   they quote 750 meters            01/01/70 00:00      
      EMI            01/01/70 00:00      
      Head end ?            01/01/70 00:00      
         App Notes            01/01/70 00:00      
            Specifically            01/01/70 00:00      
   I had trouble with <3m!            01/01/70 00:00      
      You must be doing it wrong!            01/01/70 00:00      
         1-wire Christmas tree?            01/01/70 00:00      
            About the 1-wire Christmas tree...            01/01/70 00:00      
               how fast?            01/01/70 00:00      
               ZTX            01/01/70 00:00      
                  Funny you should say that...            01/01/70 00:00      
                     Relics            01/01/70 00:00      
                        I've got some OC71s somewhere, too...!            01/01/70 00:00      
         Tried the fet interface...            01/01/70 00:00      

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