Learn to make a Tengu, an LED Face which reacts to music of the
environment around it. The tutorial will take you through the
entire process from breadboard to PCB (Printed Circuit Board).
Overall, it’s a pretty simple project to follow and costs $10.
The origin of the project, can be found in the Tengu breadboard
page.Ã‚ To amplify the music imputted, he used a LM386 Audio
Amplifier. It’s a pretty awesome project, check out the video
below.