Simple Stereo VU Meter

Posted on Feb 7, 2014

This project will indicate the volume level of the audio going to your speakers by lighting up LEDS. The LEDS can be any color so mix them up and really make it look good. The input of the circuit is connected to the speaker output of your audio amplifier. You want to build two identical units to indicate both right and left channels. The input signal level is adjusted by the 10k ohm VR. If you wish to make a very

Simple Stereo VU Meter
Click here to download the full size of the above Circuit.

large scale model of this unit and hang it on your wall there is an optional output transistor that can drive many LEDS at once. The unit I built drove three LEDS for each output. The sequence of the LEDS lighting are as follows Pin 1, 18, 17, 16, 15, 14, 13, 12, 11, 10.

Leave Comment

characters left:

Related Circuits

  • New Circuits



    Popular Circuits

    Divide-By-Odd-Number Counter
    Arduino Retro Computer with SD card and LCD
    Discrete Sliding Tone (Frequency Ramp) Doorbell
    TDA7000 FM Radio Receiver Circuit
    Design Lasers
    local oscillator
    momentary button as onoff toggle using 555
    Simple Voltmeter
    DTMF Decoder Relay Driver
    Video Digitizer Project
    A simple remote control switch circuit