Audio Spectrum Analyzer - August 2008 audio Nuts and Volts

This article describes the construction and operation of a configurable audio spectrum analyzer.

The main components are: The program is written in a dialect of C and consists of several library files and the main program file. There are three printed circuit boards which can be purchased as a set from FAR Circuits.

Here are the files which you can download for the project:
  1. Original Text of the Nuts & Volts article
  2. Source code for the program
  3. A Readme text file containing a list of all the files
  4. Schematics
  5. PCB files for Silk Screens and Vias
  6. Pictures of the boards

CAUTION

The LCD interface board has a very closely spaced pattern (10 mills). This would not be a good choice as a project for someone who does not have the capability to handle small circuit board spacing.