Arduino based audio meter that makes use of a liquid crystal show (liquid crystal display). A vu meter or preferred volume indicator (svi) is a device that displays a representation of sign level in audio gadget.In this project, the intensity of left-channel and proper-channel audio signals supplied as input to arduino uno board is displayed as bars on the 16×2 lcd. In this circuit, analogue input pins of arduino uno board are used for size of audio-signal levels.
Audio-signal inputs are furnished at analogue input pins a2 and a4 of arduino uno board. These can be in the shape of voice coming from a microphone via an amplifier or as direct output from a song participant.
