[Sensors] Mote testbeds

[Brad Karp]

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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> >
> 
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