Microphone Noise Decibel Sound Sensor Module

Suits Raspberry Pi (With an ADC) & Arduino

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You can use this with any microcontroller that supports an ADC interface. Default out of the box with Arduino
or using a Raspberry PI and one of our ADC converters. Microchip MCP3008 10Bit ADC 2.7 Volt 8 Channels SPI
is probably not a bad choice for this device as it's low cost and will have no trouble reading voice or sound.


  • Electronic microphone can be connected to the analog I / O port, when speaking to the microphone, the analog value will be changed. A recorder can be made by reading and saving the analog value.


  • Plug and play, easy to use. Compatible with the mainstream 2.54 interfaces and 4-Pin Grove interfaces in the market.
  • With use of M4 standard fixed holes, compatible with M4-standard kits such as Lego and Makeblock.
  • Specifications:

    PCB size 33.0mm X 14.0mm X 1.6mm
    Working voltage 5V DC
    Operating voltage 5V DC
    Compatible interfaces
    2.54 3-pin interface and 4-pin Grove interface(1)
    Note 1: S for digital output port, N for not used pin, V and G for voltage at the common collector and ground respectively. When there is no operation, digital output is VDD; when the button is pressed down, the digital output is 0V.

    Electrical characteristics:

    Parameter Min. Typical Max. Unit
    Working voltage 4.5 5 5.5 VDC
    Digital output voltage(VCC=5V) 0 - 5 V

    Working current(5V)

     -  260  - uA 
    Frequency range  100  -  10000  Hz
    Sensitivity   -  -50  -  dB

  • DEMO:

    Connect S port of electronic brick of microphone to A0 port of Arduino, and we will use the following program to read the analog value. When the value exceeds the threshold, the LED indicator will flash.

    const  int ledPin =  13;       // the number of the LED pin
    const  int thresholdvalue=400;  //The threshold to turn the led on
    void   setup() {
          pinMode(ledPin, OUTPUT); 
    void   loop() {
       int sensorValue = analogRead(A0);  //use A0 to read the electrical signal
       if(sensorValue> thresholdvalue)
       digitalWrite(ledPin,HIGH);  //if the value read from A0 is larger than 400,then light the LED
       delay(200 );


Brand Logicware

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