Circuits for Hobbyists - a Collection of Schematics to Build

More Circuits:

Build a Cool Christmas Tree Ornament in 5 minutes

Do you want to build something on your own for Christmas, but don’t have much time? Or no experience? Then this project is for you. One of the easiest ways to make a Christmas circuit that looks cool when you don’t have much time is to use a color-changing LED. A color-changing LED looks like […]

Halloween Electronics Project: Jack-O-Lantern

In this Halloween electronics project, I’ll show you how to make a cool Jack-O-Lantern. I used a 3D-printed carved pumpkin, but a real one works just as well (or even better!). The project is based around three normal LEDs that we control so that they look like a flickering flame. Since my “pumpkin” was very […]

The Sunrise Wake-Up Alarm

In this tutorial, you’ll learn how to build an sunrise wake-up alarm. It’s a light-sensitive circuit that will activate a buzzer when you have light shining directly on it. Place it in your window at night and the alarm will activate in the morning when the sun rises.

Simple VU-Meter Circuit

I put together this Voltage Unit (VU) meter using LEDs on a breadboard the other day. It only has 4 LEDs, but can easily be expanded to more: It’s basically a simple display for showing a value. It’s originally for showing signal level in audio circuits, but there’s no reason you can’t use it to […]