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Ready to add audio to your next project? This small breakout board couples a small electret microphone with a 100x opamp to amplify the sounds of voice, door knocks, etc loud enough to be picked up by a microcontroller's Analog to Digital converter. Unit comes fully assembled as shown. Works from 2.7V up to 5.5V.
Project description, more information and ordering can be found at https://www.sparkfun.com/products/9964
Example PIC ADC Code: /datasheets/BreakoutBoards/Mic-Testing-v10.zip
Example Audio LED control project: http://negativeacknowledge.com/2008/06/11/final-lightbar-controller/