hub don't help? 2011/3/22 Nathan Hurst <n...@njhurst.com>: > On Wed, Mar 23, 2011 at 12:53:06AM +0100, p4trykx wrote: >> Dnia 23-03-2011 o 00:12:07 Mick Sulley <m...@sulley.info> napisa??(a): >> >> > I have today connected the Gnd to the earth of the mains >> > wiring at each relay box, and the system seems to be running fairly >> > well. >> >> I'm not and expert but is it safe to connect 1-wire ground to earth >> ground(yellow green cable) > > I would recommend against that. Earth can have 10s of volts across > it in reasonable failure modes, destroying your entire 1-wire bus. It > will also reduce noise immunity because you now have large loops > possibly containing mains power through them and picking up RF from > lightning, motor brush etc.. > > Sadly this problem is the reason I no longer like 1-wire bus, they > should have used differential signalling (AC supply with modulation > like digitrack, for example). The only work around I've found is to > have isolated power to each unit (expensive). A larger ground wire > seems to eat into your signal distance (increased capacitance?). > > njh > > ------------------------------------------------------------------------------ > Enable your software for Intel(R) Active Management Technology to meet the > growing manageability and security demands of your customers. Businesses > are taking advantage of Intel(R) vPro (TM) technology - will your software > be a part of the solution? Download the Intel(R) Manageability Checker > today! http://p.sf.net/sfu/intel-dev2devmar > _______________________________________________ > Owfs-developers mailing list > Owfs-developers@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/owfs-developers > >
-- Roberto Spadim Spadim Technology / SPAEmpresarial ------------------------------------------------------------------------------ Enable your software for Intel(R) Active Management Technology to meet the growing manageability and security demands of your customers. Businesses are taking advantage of Intel(R) vPro (TM) technology - will your software be a part of the solution? Download the Intel(R) Manageability Checker today! http://p.sf.net/sfu/intel-dev2devmar _______________________________________________ Owfs-developers mailing list Owfs-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/owfs-developers
