The motion sensor switch circuit can automatically turn on a water sprinkler but you can easily use it as a motion sensor light switch or motion activated alarm too. Before beginning the construction ...

This article explains an upgraded smart solid-state AC switch system that uses microwave Doppler radar instead of traditional ...

Elgato's Eve lineup of smart home devices is one of the largest contributors to the HomeKit ecosystem, with a variety of sensors and switches for inside and out, including five more products announced ...

This light sensor switch circuit allows the automatic connection of a lamp when the light is low (at nightfall) and will maintain the lamp ON for a certain period of time. This time can be adjusted ...

Sean Hollister is a senior editor and founding member of The Verge who covers gadgets, games, and toys. He spent 15 years editing the likes of CNET, Gizmodo, and Engadget. I recently replaced most of ...