These light up paper circuit cards were much easier to make than I expected and only need a few inexpensive materials.

Learn the basics of soldering and circuit assembly by constructing a rotating LED Ferris wheel. This colorful project introduces key electronic components and soldering techniques, perfect for ...

Since the earliest versions of indoor LED light bulbs were developed, their designers have faced a variety of technical challenges. These include AC-to-DC power conversion, thermal design/heat-sinking ...

The design features a 555 timer simple application in which it manipulates the sequence of LED lighting. It is a low power that can last longer even with small energy source. The design features a 555 ...