An additional Electro-Magnetic Relay (EMR) is also attached to the interface circuit. With the help of this relay, it is easy to energize other (external) high-power blinkers or beepers, if necessary.

But that project only showed you how to interface the Arduino with the keypad — [Doug ... This allows him to send text messages to himself when the alarm system is armed, disarmed, or triggered.

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. With all of that, it’s hard to think of any more ...

Dejan Nedelkovski has built a stylish DIY touchscreen Arduino music player and alarm clock which has been ... song as well as provide a navigation interface for you to select the tracks you ...

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 ...