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 ...

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 ...