David C. Kerber wrote: > Remember what the original suggestion was: have the device wake up for a > few seconds once a day and send a message as to where it is (or maybe only > send that message if it's not where it's supposed to be).
Getting a GPS location when at an unknown position consumes a fair amount of computational power (to find the satellites). So this is a modified proposal for less energy consumption: Just check for an incoming SMS once a day. Only if the owner considers the bike as stolen, GPS may spring into action. > Maybe sneak a wire through a tiny hole in the seat post and attach it to > the bottom of the saddle? Quality of GPS detection is indeed a potential problem. The stolen bike might stand somewhere in the basement. So how about this: Add a motion sensor to the device. If an "stolen" SMS was received and there is currently no useful GPS signal, wait silently until the bike is moved, then check again. ---<)kaimartin(>--- -- Kai-Martin Knaak Öffentlicher PGP-Schlüssel: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x6C0B9F53 _______________________________________________ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user