E30 Sound Sensor Module with Arduino | Sheekar Banerjee

This project is about the interfacing of E30 sound sensor module with Arduino. This module can be interfaced with other microcontrollers and processors as well. I tried to show the demonstration of DRS Ultra-edge system and mechanism through the interfacing of this module.

Circuit Diagram:

Code:

const int OUT_PIN = 8;  //The sensor's outpin is attached at Digital 8
const int SAMPLE_TIME = 10;
unsigned long millisCurrent;
unsigned long millisLast = 0;
unsigned long millisElapsed = 0;
int sampleBufferValue = 0;
void setup() {
 Serial.begin(9600); //Signifies sensor streaming 9600 bits of data/second
}
void loop() {
 millisCurrent = millis();
 millisElapsed = millisCurrent - millisLast;
 if (digitalRead(OUT_PIN) == LOW) {
   sampleBufferValue++;
 }
 if (millisElapsed > SAMPLE_TIME) {
   Serial.println(sampleBufferValue);
   sampleBufferValue = 0;
   millisLast = millisCurrent;
 }
}