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 ...

Alarm systems are complicated affairs. ... Build a Simple, Photo Snapping Alarm System with an Arduino. Thorin Klosowski. December 8, 2015 Alarm systems are complicated affairs.

Hi, I'm Bill. I'm a software developer with a passion for making and electronics. I do a lot of things and here is where I ...

By the way, I have seen those HC-SR501 PIR sensors on Ebay for under $1 recently. Connect one to an ESP8266 WIFI module (under $2 on Ebay recently) and you can then read the sensor from an old ...

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… ...

While PIR sensors can be used with Arduino and other microcontroller boards, those best-suited for hobby use (the kind with a white golf ball-like semi-sphere lens, electrical connectors called ...