Thomas, Thanks alot for your valuable feedback, atleast I know that I have to try harder on that, but one small catch, I ma using Ubuntu12.04, can this be the reason, not sure but need to look into it in more detail.
Thanks! Regards, Wasif! On Tue, Jan 15, 2013 at 4:02 PM, Thomas Schmid <thomas.sch...@gmail.com>wrote: > We successfully had about 150 telosb nodes connected to one Linux laptop. > The theoretic USB limit is 127 devices, including hubs, per bus. Usually > your computer has multiple buses. We actually tried to have 200 connected, > but Linux didn't want to enumerate all of them and stopped at about 150. We > had a tree topology of one 10 port hub connected to 5 other 10 port hubs. > We had 4 of these configurations, each on an individual USB port on the > laptop. > > In your case, I suspect a bad cable could be the problem? Or if you rub > On Jan 15, 2013 7:52 AM, "Constantinos Marios Angelopoulos" < > aggel...@gmail.com> wrote: > >> Hi guys, >> >> in one of our work here ( >> http://www.hobnet-project.eu/files/papers/Experimental_Evaluation_of_Energy_Balance.pdf) >> we have connected 27 TelosB motes via a USB tree topology. >> >> The PC was running on Ubuntu 10.04. >> >> Regards, >> Marios >> -- >> Constantinos Marios Angelopoulos >> >> Department of Computer Engineering & Informatics >> University of Patras and CTI & Press "Diophantus" >> >> >> >> On Tue, Jan 15, 2013 at 10:33 AM, Antonio Liñán C. >> <ali...@zolertia.com>wrote: >> >>> I think you hit a magic number, I haven't done this test myself, are you >>> connecting all motes to the same hub or how are you grouping the motes? >>> >>> I'll try this on the afternoon for the kicks :) >>> >>> --Antonio >>> >>> On Mon, 2013-01-14 at 23:12 +0100, wasif masood wrote: >>> > >>> > >>> > Dear All, >>> > >>> > >>> > Does any of you have ever experienced about how many sensor nodes we >>> > can attach to a PC. In my experience, using external powered USB hubs, >>> > one can get as many connections as could but when it comes to serial >>> > logging, not all the nodes can get their data to the BaseStation via >>> > serial connection. Yesterday, I tired upto 10 and they worked just >>> > fine, but if I try to increase them beyond 10 some nodes just >>> > meteriously can't log any thing. >>> > >>> > Please share your experieces! >>> > Regards! >>> > Wasif Masood >>> > >>> > _______________________________________________ >>> > Tinyos-help mailing list >>> > Tinyos-help@millennium.berkeley.edu >>> > >>> https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help >>> >>> >>> _______________________________________________ >>> Tinyos-help mailing list >>> Tinyos-help@millennium.berkeley.edu >>> https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help >>> >> >> >> _______________________________________________ >> Tinyos-help mailing list >> Tinyos-help@millennium.berkeley.edu >> https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help >> > > _______________________________________________ > Tinyos-help mailing list > Tinyos-help@millennium.berkeley.edu > https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help > -- Wasif Masood
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