In this project, the author is going to construct a system using a Arduino Development board and GSM module. He connects a switch/sensor to the Arduino board along with the GSM module. The user ...

You can connect any intrusion detection unit (such as a light fence or a motion sensor) to the input connector J2. Note that an active-low (L) at pin 1 of connector J2 triggers the security system.

Open Electronics has released an updated version of their GSM/GPRS shield for Arduino, with new hardware features designed to expand user customisation options and support a wide variety of ...