These sensors use infrared, radar, and sound waves to detect changes that mean someone or something is in the space. Use cases: If someone passes into the hallway, turn on a light.

The Switch 2 has been officially revealed, and while it's unconfirmed that the new Joy-Con controllers use IR sensors, we're running you through what they do.

If your phone does not have an IR blaster, you can still use an external IR blaster device: Connect the External IR Blaster: Connect the external IR blaster to your phone via a USB cable or Bluetooth.

Why Your Smartphone Needs an Infrared Sensor You could use a heat sensor to check your house for leaks, for instance. But mostly, it's a lot of fun.

Ear thermometers take a person's temperature using an infrared sensor. Learn more about their accuracy, how to use them, and alternative methods here.

Explore infrared imaging with Matt Hasty: basics, sensor types, and radiometric calibration for scientific breakthroughs. Learn to enhance efficiency using FLIR technology. Register for our live Q&A ...

Ever wonder how to calculate revolutions per minute using a microcontroller? This project shows you how by purposing an IR emitter and detector and a computer fan. As the fan blades spin they disru… ...