This Circuit can compare the Light level in an area. It uses a PN Photodiode as the light sensor and IC CA3140 as voltage comparator. The circuit is ideal as the front end of burglar alarm circuits.

Outdoor lighting is an easy way to make sure you have an illuminated path toward your front door or garage. Since lights don’t always need to be on, investing in motion sensor lights is an affordable, ...

If you own Philips Hue smart bulbs, don’t think twice about adding Philips’ Hue motion sensor; it’s a nearly flawless upgrade to the Hue ecosystem. Motion-activated lighting isn’t a new idea. Whether ...

Originally hailing from Troy, Ohio, Ry Crist is a writer, a text-based adventure connoisseur, a lover of terrible movies and an enthusiastic yet mediocre cook. A CNET editor from 2013 to 2024, Ry's ...

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 ...