This DIY gas leakage detector is designed for educational and basic monitoring purposes. For critical safety applications, ...

How to Install a Smoke Detector. Other smoke detectors circuits. please send us an email if you know other interesting circuits. RE46C190 photoelectric smoke detector – source Using this photoelectric ...

Using motion detectors and an Ardunio you can add a little extra wow to your Halloween displays this year. This article covers the circuits and the code to make that happen.