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this led bar graph contains only three LED s and each LED show the low, mid range and high frequencies according to the audio played, this bargraph can be used in audio ...
1 x red LED ( or any color you like) 1 x Blue LED (or any color you like) 1 x Green LED (or any color you like) 1 x ...
make the circuit according to the circuit diagram
hope you like the circuit... And please rate it
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