PCWorld explains how to create an affordable CO2 air quality monitor using a Raspberry Pi and MH-Z19C sensor for under $40. This DIY project helps monitor indoor air quality since high CO2 levels ...

We may receive a commission on purchases made from links. While it may seem intimidating at first, there are plenty of easy DIY auto maintenance projects that even the most novice DIY-er can handle.

We tested popular wideband O₂ controllers against lab-grade equipment to see how accurate their lambda readings really are ...

The nervous system does an astonishing job of tracking sensory information, and does so using signals that would drive many computer scientists insane: a noisy stream of activity spikes that may be ...

Knowing a few precise mechanic terms can turn a confusing estimate into a clear conversation and keep you from paying for work you do not need. By understanding what these 14 concepts actually mean, ...

The new sensor-packed Smart Play Brick will land this spring as part of a special Star Wars collection. The update adds interactive lights and sound to the Lego experience—including the minifigs.

This all-purpose presence sensor is a master at monitoring indoor activity and linking it to smart home features you already use. For more than 10 years Tyler has used his experience in smart home ...

Your watch’s VO2 max isn’t perfect, but you can improve its accuracy with better data and heart-rate tracking.

Senso is a gamified plant sensor that's designed to use AI to improve plant care. It is supposed to track soil moisture, temperature, and light exposure data in real time, and there is a little pixel ...

Vivoo's attachable smart toilet sensor was unveiled at CES 2026 and is designed to analyze hydration levels in real time. Corin Cesaric is a Flex Editor at CNET. She received her bachelor's degree in ...

This free web tool unlocked data my Oura Ring app barely shows - but can it be trusted?