We earn commissions from purchases you make using links in our articles. Learn more. Anyone who works on their car should have a multimeter, but they come in handy around the house too. Whether you ...

Don’t worry, it’s not just you. Everyone dropped their first, or likely fortieth, F-bomb when their dad had them hold the spark plug while he hit the kickstarter on their dirt bike. While it might ...

A continuity tester that indicates the resistance of, say, PCB traces with musically-related tones, whose pitch changes with ...

Which USB-C cable can do what? It's often not that easy to find out. A clever cable tester helps to sort cables according to ...

Due to its large dynamic range, the decibel is a useful unit of measure and is used in various applications, mainly in the ...

Kaitlin Sullivan is a health and science journalist based in Colorado. She's been part of multiple award-winning investigations into health topics including the international medical device industry ...

An oscilloscope is usually the most sensitive, and arguably most versatile, tool on a hacker’s workbench, often taking ...

Flux is one of those things that you cannot really use too much of during soldering, as it is essential for cleaning the ...

Discover how credit card validation codes work and protect against fraud. Learn about their placement, security role, and examples to secure online transactions.

For the $5 I'd paid for it, that would have been cool. But alas, apart from being a useless scam, it's quite innocent. I tore mine apart, and inside is very little. Inside the plastic box is a circuit ...