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.

Put aside all of the projects that use an Arduino to blink ... microcontroller and has turned an Arduino Mega into a fully-functional home alarm system. The alarm can read RFID cards for ...

Your smartphone makes a great smart alarm clock ... Instead, Make shows you how to build an internet-connected alarm clock using an Arduino and Google. All you'll need is an Arduino Yúnm a ...