Depending on the music you’re listening to, watching a VU meter bounce to the music is always a good time. So why not integrate the VU meter right into the audio source? That’s what [Matikas] did, and ...

This is an Arduino library for interfacing with Dutch smart meters, through their P1 port. This library can take care of controlling the "request" pin, reading messages and parsing them. This code was ...

This one caught my eye on twitter, the Arduino Audio Meter - an Arduino-based device described as spectrum analyser and guitar pedal in one... It's based on the Uno board, to be precise, fitting ...

This project demonstrates an Arduino-powered wireless frequency meter that can measure the frequency of sinusoidal AC transmissions ranging from 50Hz to 3kHz. Figures 1 and 2 show prototype ...