Adding a sensor to the Ring Alarm system is easy when you know how, but you should consider if it's really worth it.

A leak sensor is a quick and affordable way to identify potentially damaging water leaks.

While PIR sensors can be used with Arduino and other microcontroller boards, those best-suited for hobby use are smart enough to perform simple tasks without any programming.

Keep burglars away with the best DIY home security systems. These expert-tested systems will give you professional-grade protection without the hassle of a professional installation.

Ultra simple circuit of the tilt sensor alarm presented here can be fabricated using readily available inexpensive components. The circuit is a true transistor based design. Home made Tilt sensor for ...