On Wed, May 18, 2011 at 03:19:16PM +0200, Eric Smith wrote: > Main application here is in a sea shipping container. > > The key issues are RF communication (when in a GSM range of course) > and power management due to the long haul journey including journey > overland. Power supply has to be in the form of an additional battery. > > Technical issue is to have minimal size OS and to be low in power > consumption. And robust.
If you sleep and only wake up at intervals, you should anticipate some difficulty acquiring a GPS signal every time you wake up. The GPS in the Freerunner is really designed to make use of A-GPS and if you can't do it because you are at sea and far from any network signal, it can take a long time to get a position. We have sometimes seen it take over 40 minutes to get a good fix (unit mounted on an aircraft glareshield). -Phil _______________________________________________ Openmoko community mailing list firstname.lastname@example.org http://lists.openmoko.org/mailman/listinfo/community