I like to see lights move to music. This project will indicate the
volume level of the audio going to your speakers by lighting up LEDS.
The LEDS can be any color so mix them up and really make it look good.
The input of the circuit is connected to the speaker output of your
audio amplifier. You want to build two identical units to indicate both
right and left channels. The input signal level is adjusted by the 10k
ohm VR. If you wish to make a very large scale model of this unit and
hang it on your wall there is an optional output transistor that can
drive many LEDS at once. The unit I built drove three LEDS for each
output. The sequence of the LEDS lighting are as follows Pin 1, 18, 17,
16, 15, 14, 13, 12, 11, 10.
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