I found a pvc pipe that the motes would fit in, I think it's 1.5". There are threaded fittings that would allow access, and it should be water-tight given that it's water pipe.
As far as batteries go, I haven't done any tests yet, but I think a lithium polymer battery would probably work pretty well. And they have very good energy density. However, they don't work good in the cold. I assume solar would work, but the energy management would still have to be well implemented unless you could live with a large panel. Lots of outdoor equipment is now solar powered. I've always been somewhat concerned that an elaborate setup would disappear. We had that happen with a mote that was unattended in a hallway for less than 5 minutes. Eric On Sat, Jun 14, 2008 at 5:09 PM, Paul Stickney <[EMAIL PROTECTED]> wrote: >>> 1. How can I get enclosure for MicaZ/TelosB motes, so they can deploy >>> weather-proof? Could someone recommend some companies? >> >> You should have a look at volcanic monitoring work led by Prof. Matt Walsh >> at Harvard. As far as I remember, they used cases to protect the motes from >> climatic conditions. > > Same goes for other hazardous/outdoor environment research with > accessible, but fixed long-term, deployment sites. > Sealed weatherproof metal enclosures. External connections (power, > antenna, sensors, etc) are fitted onto the casing itself and sealed. > For non-metal cases, pelican has a good (if not pricey) selection--and > these cases are TOUGH. > Otherwise, hit up your favorite search for metal outdoor enclosures. > Spec as needed. > (Make sure to get an enclosure with a proper door seal.) > >>> 2. battery is a problem. Is it easy to use solar energy to provide the >>> energy? again, which comany can provide this for MicaZ or TelosB? > > Just use bigger (external) batteries. Really. > If these mote setups are deployed fixed long-term and are periodically > accessible, the requirement for minimal size may be signifcantly > reduced. > (Consider the entire unit--housing, rigging, power, antenna, etc--may > be several feet in each dimension for long-term environment > monitoring.) > It's not quite the same as attaching long-term tracking devices to > dolphins. (Unless, maybe this is what you want...) > > Of course, if solar is what you want to do, the external power source > really is just a "module" anyway... > > HTH, > Paul > _______________________________________________ > Tinyos-help mailing list > [email protected] > https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help > _______________________________________________ Tinyos-help mailing list [email protected] https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
