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 ...

If you build engines, tune cars, or even just like mashing your foot on the throttle with conviction, you’ve probably heard the term “wideband O2 sensor” being thrown around at the track, dyno ...

If the wind, rain and snow are somewhat getting you down, it’s possible that the phone in your pocket could help you relieve some of the January blues. If you are an O2 customer, you have automatic ...

There's also a tempting £4,000 prize up for grabs VIRGIN Media and O2 customers could bag an entire year of free broadband or mobile billing. The twinned network ...

For a 65-year-old staring at a lifetime of paychecks replaced by portfolio statements, the central question is not just "Did I save enough?" but "How much can I safely pull out each month?" The answer ...

NameDrop is a neat little feature that allows one iPhone user to share their contact information, photos, or videos by simply tapping their phone to someone else's iPhone. I've shown how this works ...

Anyone still using an older mobile phone on the O2 network is being urged to upgrade now. The popular UK mobile provider has just issued a final warning ahead of the imminent shutdown of its 3G ...