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!

Posted in Misc Hacks Tagged airwick, arduino, PIR sensor ← PlayStation 3 Controller Made Fully Remappable Send A Satellite Into Space For $300 → ...

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 ...