My spectrum analyzer

You can see my spectrum analyzer in action at

I attached the schematics of the circuit (in pictures) except the power supply schematic which is just two voltage regulators.

The pictures are in the correct order and each of it represents a sheet of the whole schematic which is 7 sheets. The number of the sheets (pictures) starts from 2 (i did not put the power supply) and finishes to 7.

The first circuit (picture) is the audio signal amplifier, the second is the bandpass filters, the third is the half of the LED's panel controller, the fourth is the other half of the LED's pane; controller, the fifth is external controls (buttons and POT) for the PIC and the last one is the control panel circuit.

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