Over on YouTube [Andrew Neal] has a Function Generator Build for Beginners. As beginner videos go this one is fairly comprehensive. [Andrew] shows us how to build a square-wave generator on a ...

It's pretty easy to build.

July 7, 2026 • Pete Hegseth's Pentagon has been dismantling diversity initiatives and blocking the promotions of high-ranking Black officers. This week, Parker talks with The Atlantic's Clint Smith, ...

Tony Goacher] has worked with a lot of cheap brushless DC motor controllers built in China. They can be very cost-effective, ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Megan Wollerton Our previous budget pick, the Diivoo Smart Water Timer With ...

These are some great DIY projects that you can do for cheap.

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Megan Wollerton If you’ve ever found yourself dashing through a rainstorm to ...

SnapTimer is a tiny, free Windows timer that lets you start a countdown or stopwatch instantly — no install, just enter minutes and hit Enter. SnapTimer is a minimalist countdown timer for Windows ...

Chances are, you’ve heard of the police code 10-4, which means “affirmative” or an acknowledgment of a message. But if you hear a police officer say 10-33, there’s a police emergency underway. However ...

Audio frequency detection is the process of identifying the pitch or dominant frequency of a sound signal. Three common methods used are Fast Fourier Transform (FFT), AutoCorrelation, and ...