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.

Here is a traffic light system based on Arduino that can be used in a 3-way ond 4-way intersections. It has an additional blinking orange led that is used to signal when the pedestrians can cross the ...

The device also keeps track of temperature and humidity. The entire system can be controlled via a web interface. The Arduino serves a web page that allows the user full control over the alarm.

Nothing comes close to the awesomeness of this traffic light server monitoring system which has been created using a little Arduino wizardry ...

Instructables user FreedomToCreate has made an Arduino powered system that opens and closes the blinds on a schedule, based on room temperature, or outdoor light.