Looking for a digital recreation of the classic analog volume unit (VU) meter? If you’ve got an Arduino ... parts into an attractive and functional audio display. The project’s Hackaday.IO ...

Thumping level meters that pump with the volume are a great example ... The build relies on a very simple circuit that relies entirely on analog electronics in lieu of the usual digital signal ...

The circuit uses a preamplifier stage around NPN transistor BC 548 and a power amplifier around LM380.An external Collar MIC can be given to the input using an audio jack .The voice signals are ...