here using usb-serial isnt a problem but if i remember some linux usb-serial drivers have a limit of howmany devices/computer could be used maybe it' near to 16usd/computer (per linux operational system)
2014-10-01 16:13 GMT-03:00 Roberto Spadim <robe...@spadim.com.br>: > :) probably yes > but any problem including more buses devices? > > 2014-10-01 15:57 GMT-03:00 Jerry Scharf <sch...@lagunawayconsulting.com>: >> Roberto, >> >> I was planning on a large power supply and using simultaneous mode, but >> from my prior experience we still wouldn't be able to poll the >> temperature of all the devices very quickly. Thus the need for more >> buses to run in parallel. >> >> jerry >> >> On 10/01/2014 11:53 AM, Roberto Spadim wrote: >>> hummm you need to measure, or check a alarm condition? >>> >>> with 300 using alarm condition is possible only alarmmed sensors will >>> be reported at bus, it's not temperature convertion it's only alarm >>> information (alarm on/off) >>> >>> measuring temperature you should use (i don't remember the owfs file >>> name) a option to convert all sensors at same time, but ensure a good >>> power supply and after read one by one without convert temperature >>> (the same owfs file do this) >>> >>> 2014-10-01 15:04 GMT-03:00 Jerry Scharf <sch...@lagunawayconsulting.com>: >>>> Hi, >>>> >>>> I am looking at using 18b20s to measure some load resistors and a couple >>>> other things. This is for a large bank of unit under test. The thing is >>>> that there are 300 load resistors plus 20-30 other channels to track. >>>> Then again, if we do a second monitor point, that's another 300 sensors. >>>> >From my experience with 30 sensors, having 300 is going to take a number >>>> of buses to be able to poll in finite time. >>>> >>>> How many buses make sense? What type of bus masters should I choose? We >>>> will have some type of monitor computer, probably a linux box. >>>> >>>> thanks in advance, >>>> jerry >>>> >>>> >>>> ------------------------------------------------------------------------------ >>>> Meet PCI DSS 3.0 Compliance Requirements with EventLog Analyzer >>>> Achieve PCI DSS 3.0 Compliant Status with Out-of-the-box PCI DSS Reports >>>> Are you Audit-Ready for PCI DSS 3.0 Compliance? Download White paper >>>> Comply to PCI DSS 3.0 Requirement 10 and 11.5 with EventLog Analyzer >>>> http://pubads.g.doubleclick.net/gampad/clk?id=154622311&iu=/4140/ostg.clktrk >>>> _______________________________________________ >>>> Owfs-developers mailing list >>>> Owfs-developers@lists.sourceforge.net >>>> https://lists.sourceforge.net/lists/listinfo/owfs-developers >>> >>> >> >> >> ------------------------------------------------------------------------------ >> Meet PCI DSS 3.0 Compliance Requirements with EventLog Analyzer >> Achieve PCI DSS 3.0 Compliant Status with Out-of-the-box PCI DSS Reports >> Are you Audit-Ready for PCI DSS 3.0 Compliance? Download White paper >> Comply to PCI DSS 3.0 Requirement 10 and 11.5 with EventLog Analyzer >> http://pubads.g.doubleclick.net/gampad/clk?id=154622311&iu=/4140/ostg.clktrk >> _______________________________________________ >> Owfs-developers mailing list >> Owfs-developers@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/owfs-developers > > > > -- > Roberto Spadim > SPAEmpresarial > Eng. Automação e Controle -- Roberto Spadim SPAEmpresarial Eng. Automação e Controle ------------------------------------------------------------------------------ Meet PCI DSS 3.0 Compliance Requirements with EventLog Analyzer Achieve PCI DSS 3.0 Compliant Status with Out-of-the-box PCI DSS Reports Are you Audit-Ready for PCI DSS 3.0 Compliance? Download White paper Comply to PCI DSS 3.0 Requirement 10 and 11.5 with EventLog Analyzer http://pubads.g.doubleclick.net/gampad/clk?id=154622311&iu=/4140/ostg.clktrk _______________________________________________ Owfs-developers mailing list Owfs-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/owfs-developers
