Here is an ultra simple Arduino Night Alarm project wired around a handful of inexpensive and easily available components. One advantage of using Arduino as a security system is the flexibility!

There’s a huge market for 433 MHz alarm system hardware out there, from PIR motion detectors to door and window sensors. If you want to put them to work, all you need is a receiver, a network-enabled ...

Wireless sensor networks are nothing new to Hackaday, but [Felix]’s wireless PIR sensor node is something else entirely. Rarely do we see something so well put together that’s also so well designed ...

In this security system is based on the embedded system along with GSM and sensor networks. The human movement is detected using the PIR sensors.

It may not be as fancy as Skylink, or even the iSmartAlarm security system. But, for the cost of a Rasberry Pi, Pi Camera and PIR sensor, you could make a couple of these alert systems and still ...