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.

Getting a robot to stand on two wheels without tipping ... shows how to make one with just a few common components, an Arduino, and a bit of patience fine-tuning the PID controller.

If your security system works with third-party accessories, you can link your Arduino alarm to that system and ... you can build a robot that handles it for you. This one is a little more ...