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!

TK has combined a PIR with an Arduino to create a smart safety light for the house or workshop. Follow along as this gets built out into a more extensive project.

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

Electromechanical PIR-Sensor Interface IC Controls Any AC Load Oct. 8, 2008 The LS6506R is a pyroelectric infrared (PIR) sensor interface IC that is designed to drive a latching relay.

This build is about using the temperature sensor in your clock. The ATMega328p, the chip at the heart of all your Arduino Uno clones, has within it a watchdog timer that clicks over at a rate of ...