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 ...

A reliable indicator of the air quality in offices, classrooms, or living rooms is the CO2 content. In fresh air, the concentration of carbon dioxide is around 400 ppm. This stands for “parts per ...

Raspberry Pi and Flipper Zero join list of banned items, including weapons, explosives and drones They stand out for being singled out – not categorized like other listed items It seems there were ...

Robotics is a fascinating field that has come a long way in recent years. What was once cutting-edge and prohibitively expensive for consumer-grade projects has rapidly become accessible to the hobby ...

IKEA's 21 new smart IoT devices support Matter, HomeKit, Google, and Alexa, so you can build a low-cost setup with quick ...

According to experts, the best home weather stations include La Crosse, AcuRite Iris, Ambient Weather WS-2000, and WS-2902.

The live and happening Amazon Great Republic Day Sale 2026 is showing offers and unbeatable prices with some of the best PC ...

IoT stands for the Internet of Things. It’s a way to connect everyday objects, like your fridge or even a car, to the ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Tim Heffernan Tim Heffernan is a writer who covers air and water quality and ...

CNET’s expert staff reviews and rates dozens of new products and services each month, building on more than a quarter century of expertise. Air quality infamously drops as the days grow cold and we ...