The motion detector is not only used as intruder alarm but also used in many applications like home automation system, energy efficiency system, etc. The motion detector will detect the motion of the ...

The presented schematic shows how to build a simple PIR motion sensor. PIR sensors allow motion sensing, it is almost always used to detect whether someone has moved in or out of the sensors range.

If you’ve ever dealt with a brightly lit Christmas tree, you might understand the frustration of having to crawl underneath the tree to turn the lights on and off. [brmarcum] feel’s your pain. He’s ...

is The Verge’s executive editor. He has covered tech, policy, and online creators for over a decade. Philips Hue has a new accessory that’ll make it even easier to automate the lighting in your home: ...

Kinematic sensing for displacement and velocity vectors is in high demand in manufacturing, transportation, robotics, mapping and so on. Current technologies for these vector measurements are based on ...

Figure 1a shows a slotted optical switch. An LED is mounted in a plastic housing, facing a phototransistor, but separated by a gap. If something moves into the gap, it blocks the light path between ...