Resistance standards are incredibly useful, but like so many precision references they require regular calibration, ...

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

Scam "power saving" devices are rampant online. These devices plug into an outlet and promise to "improve the use of energy," "extend the life of electrical equipment," and even "avoid illegal ...

I never thought that a $12 accessory could rival tools that cost much more. But this USB-C power meter delivers in profound ways.

Several police departments announced that they will be switching their dispatch center, leading to some criticism from the Box Elder Sheriff. During a press conference, Brigham City Police Chief ...

When you do appliance repair, many times you will want to test a certain part away from the appliance, like to learn how to ...

This brief tutorial explains how the “Wiegand effect” can be used as a reliable, low-cost, energy-harvesting system to power ...

Decommissioned parking meter painted baby pink and turned into a Raspberry Pi Zero jukebox. RFID credit-style cards queue ...

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 ...

A capacitor is an essential component in many electrical and electronic circuits. It stores and releases electrical energy when needed, helping regulate voltage and maintain power stability. Over time ...

Dialing in your aperture, shutter speed and ISO doesn't have to be a game of guesswork when using manual mode. If you're consistently getting overly dark or light photos, you may just need to learn ...