Obnoxious advertisement: my company resells an Arduino-compatible wireless sensor node made by Seeedstudio, http://www.robotmesh.com/seeeduino-stalker-v3 http:/

Obnoxious advertisement: my company resells an Arduino-compatible wireless sensor node made by Seeedstudio, http://www.robotmesh.com/seeeduino-stalker-v3 http://www.robotmesh.com/seeeduino-stalker-v3 Costs $39.00 Onboard RTC, LiPo charger, temperature sensor, micro SD card socket. Designed to be plugged into a 5 volt solar panel. (Many complaints that the panel Seeed supplies is undersized and degrades quickly in the field, so we don't carry it, so you'd have to source that yourself, or just use a DC wall adapter) Uses XBee-footprint radio modules, sold separately. (We don't carry those either, since Digi got really obnoxious about trademark enforcement)