Published on 19 May 2022. Written by Vasanth Vidyakar
This particular project involves the design of VU meter that can measure the level of audio signals given to it.VU meters are used for many applications and can be used for various purposes. This particular project involves the design of VU meter that can measure the level of audio signals given to it.
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TVU Meter or Volume Meter is very popular and fun project in Electronics. We can consider the Volume Meter as an Equalizer, which is present in the Music systems. In which we can see the dancing of LEDs according to the music, if music is loud then equalizer go to its peak and more LEDs will glow, and if music is low then lesser number of LEDs shall glow. Volume Meter (VU) is an indicator or representation of the intensity of sound level over LEDs and can also serve as a volume measurement device.
In this circuit LEDs are connected at Reverse Logic, means negative terminals of LEDs are connected to the output of the comparators and when comparator output is high LED will be off and when output is Low then LED will be On. This circuit can work from 3.3v to 18v, but for a better result, I recommended to use 12v.
Technology used: VU Meter
Kits required:
LM358IC
AUX Cable
LEDs
VU Meter
100K variable resistor
10K Resistor
Breadboard/li>
Who should do this project? If you are interested in Volume Meter technology, then you should do this project to increase your knowledge database
Kit required to develop LED VU Meter Circuit:
