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The idea of making a VU meter has been on my project list for a long time. And finally I can make it now.
The VU meter is a circuit for an indicator of the audio signal strength. The VU meter circuit is usually applied to an amplifier circuit so that the level of audio power can be determined by certain parameter settings which will be displayed in the form of light from the LED.
The number of LEDs used for indicators varies depending on the manufacturer. For the VU meter that I made, I used 20 LEDs. To make it more interesting, I divided my led colors into 3, namely 12 green, 5 orange, 3 red.”

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