Dnia 29-01-2012 o 16:10:28 Lui Elle <paspourlongte...@yahoo.fr> napisaƂ(a):

> the wiring scheme , the  the power and ground is good
> i can read the's DS1820 and the's DS2450

What kind of wire are you using? 8 wire twisted pair(UTP) or maybe a  
telephone wire.
If you have some spare wires in the cable try to add another GND wire  
preferably in a twisted pair with +5V



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