ADOT is taking steps to handle a crime that has been a problem in Arizona for decades. Congressman reveals what he saw in the unredacted Epstein files Satellite image reveals giant crack in one of ...

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 ...

Apple released a small build update to iOS 26 developer beta 6, which does not re-enable the blood oxygen sensor on Apple Watch in spite of the earlier iOS 18.6.1 update that did. The new iOS 26 ...

If you have an Apple Watch Series 9, 10, or Ultra Watch 2 that you bought in the US in the past year, you'll finally get the blood oxygen sensing feature back via a software update later today, ...

Designing an analog circuit can be a frustrating experience, as noted by Nick Cornford in his Design Idea (DI), “DIY RTD for a DMM.” With a fortnight’s struggle, I completed the design of 4 mA to 20mA ...

We may receive a commission on purchases made from links. Modern cars are designed to be more efficient and eco-friendly than ever. Automakers build vehicles with a wealth of advanced features to not ...

When it comes to metering in the fire service, there’s a culture of “I’m no hazmat technician. Meters are for hazmat geeks.” However, competency in basic metering is a skill that first responders must ...

The gunshot-detection system ShotSpotter has for years drawn criticism from activists and academics who believe the company behind the system, SoundThinking, places its microphone sensors primarily in ...

The sensor framework described in a recent journal by MIT scientists can also use other sources of energy such as vibrations or sunlight. Scientists have created a new type of sensor that does not ...

As of today, all new Apple Watch Series 9 and Ultra 2 models sold by Apple do not support the blood oxygen feature. This is due to an ongoing patent dispute with Masimo. But if you are buying an Apple ...