hi, thank , supply 5v is on a third wire , where is setting pullup on owfs , i not see ?
my topo.jpg ________________________________ De : Pascal Baerten <pascal.baer...@gmail.com> À : Lui Elle <paspourlongte...@yahoo.fr>; OWFS (One-wire file system) discussion and help <owfs-developers@lists.sourceforge.net> Envoyé le : Samedi 28 janvier 2012 23h02 Objet : Re: [Owfs-developers] (no subject) I guess you are using parasitic power mode for your devices. The voltage drop on DQ is too important to power the ds2450 while still enough to power ds1820. Looking at datasheets reveal that the ds2450 require 4.5V as minimum voltage while ds1820 works with voltage as low as 3.0V My recommendation is to supply 5V on a third wire and ensure that slave have their vcc connected on this wire. Alternatively look if owfs provide control on active pullup and strong pullup settings that may help to feed more slaves parasistically. Pascal
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