Grove – Loudness Sensor

The Grove – Loudness Sensor is designed to detect the loudness of environmental sound. Based on amplifier LM2904 and a built-in microphone, it amplifies and filters the high frequency signal that received from the microphone, and outputs a positive envelop. This will make for Arduino’s signal acquisition. The output value depends on the level of sound input. In order to avoid unnecessary signal disturbances, input signal will go through two timesfiltering inside the module. Lastly, there is a screw potentiometer that enables manual adjustments to the output gain.

Features

Grove compatible interface

Wide supply voltage range

Built-in signal filtering

Gain adjustable via screw potentiometer