Fermion: MEMS Microphone Module Arduino Wiki

Introduction

This tiny MEMS microphone has an amplifier gain of 66. When there is no sound detected, it outputs voltage around 1.5V. When speaking, you can easily get the acoustic waveform by ADC sampling. The module can be used on all kinds of 3.3V/5V main-controllers.

Specification

Signal Type: Analog signal
VCC: 3.3 V/5 V
Directivity: All-round
Sensitivity: -42 dB
S/N Ratio: 59 dBA
Frequency Range: 100~8k Hz
Dimension: 18×12.5 mm/ 0.71×0.49”

Board Overview

Num	Label	Description
1	GND	Power supply -
2	VCC	Power supply +
3	A	Analog output port

Tutorial

Requirements

Hardware
- DFRduino UNO R3 (or similar) × 1
- MEMS Microphone Sensor × 1
- M-M/F-M/F-F Jumper wires

Software
- Arduino IDE

Connection Diagram

Sample Code - Read Data

Burn code, open the serial port plotter, it will display the acoustic waveform

void setup() {
  Serial.begin(115200);
}

void loop() {
  // read the value from the sensor:
  Serial.println(analogRead(A0));
  delay(10);
}

Expected Results

FAQ

For any questions, advice or cool ideas to share, please visit the DFRobot Forum.

Fermion: MEMS Microphone Module Arduino Wiki - DFRobot