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.

Make sure the adjustment knobs for sensitivity and on-time for the motion sensor are facing up so you can modify how sensitive your device is and how long it stays on to signal your Arduino.

The Etch a Sketch toy has gone more or less unchanged for over 60 years, but if you’re handy with a soldering iron you can build an upgraded version that ...

Outdoor light motion sensors can add a healthy level of security to your home. Here's how to set them up.

HomeKit motion sensors are a vital accessory when building a smart home than runs by itself without manually turning devices on and off.

As for sensors, it has a light sensor and an optional 9-axis motion sensor, allowing for gesture sensing, proximity detection, and motion tracking.

Think of motion sensors, and your first thought probably goes to security. An intruder enters your property, the sensors detect them, and floodlights snap on. The same principle applies for ...

So CNET's Associate Technical Editor Steve Conaway and I decided to build a flood sensor that could cover a whole room, and we figured out you can do it for under five bucks.

The Eve motion sensor lets you create automations to trigger lights and other HomeKit devices based on when someone is in in the room.

If you can install a conventional outdoor light fixture, you can install a motion sensor light, although aiming and adjusting it takes extra effort.