Archives: Projects

Visualizations are an important part of a music player. They provide the user with something to feast their eyes on especially when the music has no video. For today's tutorial, we will build a visualization device, capable of providing a visual representation for any kind of music fed...

A window detector circuit, also called window comparator circuit or dual edge limit detector circuit is used to determine whether an unknown input is between two precise reference threshold voltages. It employs two comparators to detect over-voltage or under-voltage condition. This...

  The project shown here is a microphone preamplifier that provides high quality amplification, optimized for use in computers, media and mobile applications. The pre-amplifier provides a differential input stage, making the device particularly effective when layout...

Either for benchmarking purposes or as external telemetry to help you stay within the acceptable range for your computer power, super users usually have the desire to have a way of knowing what the performance numbers of your PC are. For today's tutorial, we will build a PC Hardware...

This motor driver circuit can drive a brushed DC motor with up to 250W of continuous load. The project can be controlled with the general logic IO-Ports of any microcontroller. Either an Arduino Uno or another microcontroller can be used as the control board. The project uses two...

Today we are going to build one of the most important tools in sound mixing; A audio VU (volume unit) meter based on an Arduino/AVR microcontroller. This project serves to demonstrate how the knowledge of electronics can be applied to build solutions for any part of your day to day...

Hygrometers are used to determine the moisture content of the environment. They find application in farms, food storage, museums, and other places where moisture needs to be monitored to ensure damage is not done to goods and other things stored in that space. For today's tutorial, we are...

USB Morse Keyer is a microcontroller-based auto keyer with following features: USB / straight key / iambic key inputs. Support for both standalone and USB operating modes. 64-character USB typeahead buffer and 6-character Morse key typeahead buffer. Support 5, 10, 15...