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Blue PCB Electronics

1b17 sound detector Module (small)

1b17 sound detector Module (small)

Regular price Dhs. 25.00
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This module is ideally suited for adding sound control to your project. This is a sound detection module that can detect noise and produce an analog output that can be used to trigger a switch-like response. This allows you to replace those mechanical switches that have been holding back your project all this time with something a little noisier or begin a long-term sound level monitoring system.
An onboard potentiometer allows you to tailor the sensitivity or trigger level to account for a project's background noise.
As a simple module, it will suit use within a large range of projects based on microcontrollers, such as Arduino boards and the Raspberry Pi. The module has a M3 mounting hole, allowing for easy attachment to a multitude of surfaces.

Documentation: KY-037 datasheet


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.

Required Materials:

  • Arduino UNO R3
  • KY-037
  • male-female-jumper-wire


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



void setup() {
  // initialize serial communication at 9600 bits per second:

// 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:

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