Low Cost LED VU (Volume Unit) Meter Circuit
This circuit is built around KA 2281 16 pin IC.
Also this circuit works with 12 volt DC.
It looks like 5 led for the left and 5 led for the right channel.
The play starts from green led to yellow and for the peak sound it's red led.
You can built this on a common pcb or just by connecting the leads itself.
The circuit is given below and also some images of a demo board that I made to work here.
(Click here for high resolution image)
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