Weekend Projects - Cellular Sensor Sentinel

Complete instructions for this episode of Weekend Projects can be found at http://makezine.com/projects/cellular-sensor-sentinel/ This versatile Arduino-based remote alarm system can notify your cell phone within seconds when one of the sensors is activated. Some examples include a PIR sensor to detect motion, a contact sensor, and even a capacitive sensor made from aluminum foil! Other applications could include detecting humidity, magnetic fields, or acceleration, among other applications.