27feb2012GPS boards in different flavors. --acquisition time has to do with board, as well as antenna. --"old" expensive, less power, acquire sooner; accuracy --"new" less expensive new has different data output somehow, but big offset. what are variants of gps output strings, perhaps longitude conventions. teeny antenna, long time to acquire. with big antenna, cold start 6 minutes; recent restart, few seconds only tm for both? --ok without gps. but now with gpslock on both, couldn't listen to both at once. want "network addresssing mode". thursday: jon- tm thomas- files amanda - more updates patrick - data streams ellen - tuesday, river morph duck order Dartmouth Undergrad C K per duck: Arduino Uno communication shield xbee pro 5dBi 900MHz antenna gps module gps external antenna Pololu mag/acc battery clip 3x 9V battery (1 flight, 1 spare, 1 testing) SD cards indicator light? power switch? $5000/20. = $250 each plus tupperware ($6) xbee pro options: jon/amanda fins: $10 material per duck, vs few $ for wood/flap fin |