and an LED. You’ll then modify this circuit so that you can turn it on and off using fasteners like buttons, zippers, laces, hooks, and buckles. If you’re interested in trying this with a class or ...

Instead of simply replacing the outdated bulb, we decided to build a small dark detecting circuit with 2 yellow LEDs based on this Evil Mad Scientist Laboratories design. After successfully ...

Sadly, the ones I got are not very well executed – one side is rather dim, and they are hard to turn on and off because the push buttons are tiny ... transistor on and lights the leds. The 3n3 ...

This is a very simple LED dimmer circuit which has 2 transistors, 1 resistor and 2 potentiometers. Typical segment displays LEDs consume around 25 mA for each segment and should be limited to this ...

One of the coolest aspects of Raspberry Pi projects is that you can make things that are convenient to you during work and play. For instance, if you work remotely, there's a good ...

Evil Mad Scientist Labs brings us this easy to make LED blinking circuit. The idea is to put a LED in series with a small blinking incandescent bulb from a string of Christmas lights. The bulb has ...