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An Arduino sound sensor based on the power amplifier LM386 and the electret microphone. It can be used to detect whether there's sound (like the sound of clapping, noise, etc) surround or not and output the sound strength of the environment. This sound module provides analog output signal.
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For all Grove users (especially beginners), we provide you guidance PDF documents. Please download and read through Preface - Getting Started and Introduction to Grove before you use this product.
Easy project operation: Grove compatible interface
Analog output signal
Wide supply voltage range: 4V-12V
Low quiescent current drain: 4mA
Tiny size: 2.0cm x 2.0cm twig module
Minimum external parts
Based on the power amplifier LM386
The Sound sensor module is a simple microphone compatible with many microcontrollers and SBCs like Arduino and Raspberry Pi. Based on the power amplifier LM386 and the electret microphone, it can be used to detect whether there's sound (like the sound of clapping, noise, etc) surround or not and output the sound strength of the environment. This module can easily integrate with logic modules on the input side of Grove circuits and its output is analog. With its tiny size and high performance, it is perfect for your Raspberry Pi audio detection project and interactive project.
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This wiki is for Grove - Sound Sensor
I would like to use this to send audio frequencies to an Arduino Uno board for light up the 3 different group of RGB LED. The single Led is on by one frequencies of sound (low, medium or high). how much sensor i need, one for single led or just one
It can detect the sound strength of the environment, but not the audio frequencies. If you wanna use one to judge the level of sound, yes you can.
I would like to use this sensor to detect pure tones and to react Arduino depending of each single pure tone sent. So, can it be used in this way?? Any demo code for this one?
Hi there, it can only be used to detect the sound strength of the environment. About the demo code you can go to Wiki Page to view and refer to.
Can you support the formula to calculate the corresponding db value of output analog voltage? Thanks.
Thank you, I know that the sensor will not be able to record directional information. I was wondering what in what directional pattern it picked up sound such as: omnidirectional, cardioid, or bidirectional. This would provide information as to which direction the sound has to be coming from for the sensor to pick it up.