[Sensors] Mote testbeds

[Adam Greenhalgh]

There is a downside as USB requires PCs to be near by or cabling to
work over a largish distances . If you look around the 7th floor there
is no central control of the PCs, each is administered by a different
person. The only common infrastructure we have that is likely to be
able to scale long term is ethernet.

Adam

On 18/09/05, Brad Karp <bkarp+ at cs.cmu.edu> wrote:
> Ramesh Govindan at USC has told me that his lab has had great success
> using USB for the mote control channel. The USB interface hardware for
> each mote is far cheaper than that for Ethernet, and Ramesh reports
> that the USB interface offers equivalent functionality.
> 
> I don't recall right now if his lab is *powering* the motes using USB,
> as well; I'll ask him.
> 
> I think we should definitely look into this USB control channel
> approach, as it will let us stretch our funds further, and there
> doesn't appear to be any down side.
> 
> -Brad, bkarp at cs.cmu.edu
> 
> On Sun, Sep 18, 2005 at 08:48:33PM +0100, Adam Greenhalgh wrote:
> > Interestingly it would seem that all test beds in the presenstations
> > linked from here use ethernet as the control channel. They also seem
> > to use a separate power controller. I don't think we can do this with
> > the setup in the current building, we have no ceiling voids to put
> > things like power in. I think PoE might have to be our answer.
> >
> > Looking at PoE solutions I think we probably are going to need a mix
> > of a large 24 port PoE switch and some smaller desk mounted PoE
> > switches to give us flexibility.
> >
> > Adam
> >
> > On 18/09/05, Dima Diall <dimadiall at gmail.com> wrote:
> > > Hello all:
> > >
> > > I had this unfinished message in my drafts since August due to lack of
> > > time near the end of the final project. It was intended to be a
> > > follow-up to the (first?) "UCL-CS Motes Meeting", sponsored by Steve
> > > Hailes (in late July)... I'll just finish it off with what I still
> > > remember, regarding the department's plan to set up a mote testbed.
> > >
> > > I think the first approach was the "ceiling array" at Berkeley:
> > > https://mail.millennium.berkeley.edu/pipermail/tinyos-help/2005-July/010708.html
> > >
> > > Furthermore, in the last TinyOS Technology Exchange Mote four projects
> > > related to testbed deployment and management were presented. Links are
> > > provided on the TTX II page (search under the heading "Embedded
> > > Wireless Networking Testbeds"):
> > > http://www.tinyos.net/ttx-02-2005/
> > >
> > > There also is a working group on TinyOS testbeds but with very little
> > > activity so far:
> > > http://www.tinyos.net/scoop/special/working_group_tinyos_testbed
> > >
> > > At the time when I started this I had more details, but it has
> > > vanished by now ;-)
> > > --
> > > /dima, http://www.cs.ucl.ac.uk/students/d.diall/
> > >
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