Shades Audio Sensor on Arduino Uno

The Shades Audio Sensor may be designed to work with the RGB Shades, but it can be connected to any Arduino or other microcontroller. You just need a single ADC pin, a source of 3.3V to 5.0V power, and two digital output pins. The Shades Audio Sensor is a breakout board for the MSGEQ7 spectrum analyzer IC, plus a microphone, pre-amplifier, and gain switch for high and low sensitivity modes. Link to example code: http://macetech.com/blog/node/143