He’s using an Arduino Uno and an Ethernet breakout board to hook it up to the network. This allows him to send text messages to himself when the alarm system is armed, disarmed, or triggered.

I just received my RC522 RFID reader and made this simple Arduino access control system that uses the reader, a buzzer for the alarm and a relay shield for the security system. The relay can be used ...

Put aside all of the projects that use an Arduino to blink a few LEDs or drive one servo motor. [IngGaro]’s latest project uses the full range of features available in this versatile microcon… ...

The system uses an Arduino Uno, a GSM shield, a GPS module, and a few other smaller parts. The idea here is pretty simple: you hide the Arduino somewhere in the car, hook it up to the battery, and ...

If you've ever wanted a way to monitor your doorbell from anywhere—complete with video and audio—Instructables user macgeek shows off how to build a s ...