Interfacing KY-037 Sound Sensor Module With Arduino - ElectroPeak

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  • Audio & Music, Sensors
Interfacing KY-037 Sound Sensor with Arduino

KY-037 Sound Sensor Module Features

KY-037 module consists of a capacitive microphone and an amplifier circuit. The output of this module is both analog and digital.

KY-037 Sound Sensor

You can download the datasheet of this module here.

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KY-037-Datasheet

1 file(s) 218.94 KB Download

KY-037 Sound Module Pinout

This module has 4 pins, 2 of them are for power supply.

Pin 1: The analog output. It’s value changes according to the intensity of the received sound. It can be connected to the Arduino analog (ADC) pins.

Pin 4: The digital output. It acts as a key, and it activates when sound intensity has reached a certain threshold. The sensitivity threshold can be adjusted using the potentiometer on the sensor.

You can see the pinout of this module in the following image.

KY-037 Sound Module Pinout

Required Materials

Hardware Components

Arduino UNO R3 × 1
KY-037 × 1
male-female-jumper-wire × 1

Software Apps

Arduino IDE

Interfacing KY-037 Sound Sensor with Arduino

Step 1: Circuit

Connect the wires according to the following circuit. This circuit is for analog mode.

KY-037 Sound Module Circuit

Step 2: Code

Upload the following code to Arduino.

/* modified on June 5, 2018 by Arduino Examples from arduino.cc/en/Tutorial/ReadAnalogVoltage
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*/ void setup() { // initialize serial communication at 9600 bits per second: Serial.begin(9600); } // the loop routine runs over and over again forever: void loop() { // read the input on analog pin 0: int sensorValue = analogRead(A0); // print out the value you read: Serial.println(sensorValue); }

Then press Ctrl + Shift + L to open the Serial Plotter screen.

Note

If you are using digital output, use the following code:

/* modified on Spe 2, 2020 by MohammedDamirchi
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*/ const int mic = 8; void setup() { // initialize serial communication at 9600 bits per second: Serial.begin(9600); // initialize the digital pin as an input: pinMode(mic, INPUT); } void loop() { // check if the mic digitalout is high. if (digitalRead(mic) == HIGH) { Serial.println("hearing something"); } } Liked What You See?​ Get Updates And Learn From The Best​ Subscribe

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