SparkFun Electret Microphone Breakout Board includes a 100x Op Amp to amplify sounds so the boards output level can be read via an analog input pin on a microcontroller. Works from 2.7V to 5.5V and detects sounds like voice, music, dogs and clapping.
Sounds detected by the electret microphone are very low energy. The amplifier on the board increases the voltage produced so that an analog to digital converter ADC on a microcontroller will be able to detect the levels. The board works from 2.7 to 5.5 volts so it is suitable for most microcontrollers.
The board is best used to detect sounds like clapping, knocking, voices or dogs barking.
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