Learn how to make a simple lemon battery and use it as an emergency phone charger in this hands-on science experiment. Watch ...

Discover how to build a simple electric train using just a copper coil, an AA battery, and disc magnets in this step-by-step ...

A precision voltage divider produces a specific fraction of its input voltage using carefully matched resistive components.

One part wants 3.3V logic. Another wants 5V. What do you do? Over on the [Playduino] YouTube channel, there’s a recent video running us through a not-so-recent concern: various approaches to ...