Here's How To Tell If A CR2032 Battery Is Bad

Found in Apple AirTags, the CR2032 button cell battery, also known as a coin battery, is actually surprisingly easy to test ...
Greenwich Time

China's 10-passenger electric aircraft, the Matrix, hints at how big flying taxis can be

A Chinese company has developed what it claims is the world’s largest flying electrical vertical takeoff and landing vehicle, ...
Hackaday

Building A Heading Sensor Resistant To Magnetic Disturbances

Light aircraft often use a heading indicator as a way to know where they’re going. Retired instrumentation engineer [Don Welch] recreated a heading indicator of his own, using cheap ...
EE World Online

Noise generator substitutes for tracking generator

For spectrum analyzers lacking a tracking generator, this broadband RF noise source is affordable and will help measure a ...
Hackaday

Back To Basics: Hacking On Key Matrixes

A lot of making goes on in this community these days, but sometimes you’ve just gotta do some old fashioned hacking. You might have grabbed an old Speak and Spell that you want to repurpose ...