Here is an ultra simple Arduino Night Alarm project wired around a handful of inexpensive ... The best sensor you can use to detect an intrusion is the Passive Infrared (PIR) Sensor. The PIR Sensor ...

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.

[IngGaro]’s latest project uses the full range of features available in this versatile microcontroller and has turned an Arduino Mega into a fully-functional home alarm system. The alarm ...

Another kind is known as the Passive Infared Motion Detector ... side of 10K Resistor connects to PIR Pin “Alarm” PIR Pin “Alarm” connects to Arduino Digital 2 The code for the active ...

Here is a simple general-purpose security alarm circuit built on the Arduino platform. It brings up an obtrusive alert signal when an intrusion/theft attempt is observed by its front-end sensor. In ...

Alarm clocks are cheap and abundant, but they’re pretty boring. If you want to make your own, Instructables user Paranoid Legend shows you how to build one with an Arduino. The alarm clock is ...