This Arduino project uses LEDs to show how loud a sound is. As the sound level increases, more and more LEDs light up, creating a visual representation of the audio. How it works? The MAX9814 ...

Lucía Garbo has created an Arduino powered noise pollution monitor, powered by an Arduino Mega micro-controller and housed in a 3D printed case. Other components include a SparkFun Sound Detector and ...

It is, of course, possible to realize such a circuit entirely using only discrete components, but in this article we will show you how you could build one using an Arduino and a multipurpose shield.

There are many energy meters out there either with DIY hardware or commercial meters, which need to be permanently installed in your electrical switchboard. Before starting this project, I was ...