VU Meter or Volume Meter is a very popular and interesting item in electronics. We can think of a volume meter as an equalizer that exists in a music system. Among them we can see that the LED lights will pulse according to the music, if the music is loud, the equalizer is peaked, more LEDs will light up, and if the music is softer, a lesser number of LEDs will light up. A Volume Meter (VU) is...