Finally 7 Vus and 11 patterns working on Arduino Nano and Arduino Pro Mini 3.3 volts. I say finally working because on the Arduino Nano when using Adafruit's Electret Microphone Amplifier - MAX4466 ...

AVR LED based VU meter. Contribute to heolfief/VU-meter development by creating an account on GitHub.

The build uses an Arduino Nano as the brains of the operation, which uses its analog inputs to process incoming audio into decibel levels for display on a VU meter.

Given its appearance in one form or another in all but the cheapest audio gear produced in the last 70 years or so, you’d be forgiven for thinking that the ubiquitous VU meter is just one of ...