Here’s a simple project for your Halloween celebration ... we decided to build a small dark detecting circuit with 2 yellow LEDs based on this Evil Mad Scientist Laboratories design.

How a Simple LED Resistor Calculator is Helping DIYers and Engineers Save Time March 22, 2025 by David Edwards Time will ...

Sometimes the most useful hacks are also the simplest ones. A case in point is the LED and resistor assembly that [Skippy] recently posted on his blog. The idea is to solder up some pre-made ...

It's a simple string of miniature light bulbs ... Taizhou Haoran Machinery sells machines that create LED holiday light strings. Here's how it works. First, the wire is fed into the machine ...