Circuits & Schematics - Beginners - 6

This simple method lets you make LCD backlight of any color and size to bring new look to an old device. For this job you'll need piece of transparent plastic, LEDs, resistors and some wire plus good set of different tools and couple of straight ...

Create this cool piece of art from your electronic parts bin. This makes the perfect christmas present! I have given it to many people over the years, and they all loved it! To guys, it's a really cool gadget. And for girls, it makes a nice piece ...

A homemade speaker using a plastic cup, business card, wire, magnet and some Lego blocks. I built this speaker from scratch; I was surprised of the quality of the sound. I doesn't look like a high-tech speaker but it works well. I didn't expect a ...

Tom XxTomxx14[ a ]aol.com The circuit uses a 555 timer wired as an astable oscillator and powered by the emitter current of the BC109C. Under dry conditions, the transistor will have no bias current and be fully off. As the probes get wet, a small ...

This is my very first construction with the cheap Atmel's ATtiny15 and the DS1820 thermometer. The main goal was the BIG display from the 7-segment LED modules. (And cheap + simple construction, of course...) My thermometer is really simple, but ...

David N. Warren-Smith This article is written for anyone unfamiliar with digital circuits but who would like to get some idea of what it is about. A few basic ideas including an actual working circuit will be presented in a graphical manner with ...