Forum >Sound sensor DFR0034 V2.2

Sound sensor DFR0034 V2.2

alexandre.riasat 2018-01-18 05:51:58 4330 Views3 Replies
Hi all,

I have purchased a sound sensor (DFR0034 V2.2, Analog sensor) and i would like to convert the values that the serial monitor show us into DB. Now i m just reading the values of the sensor nothing more.

Information:

Board: Arduino Uno
Sensor : Analog( Output, GND, VCC)

this is my code:
Code: Select all
int led = 13; int threshold = 100; //Change This int sensor = A0; int valeur ; void setup() { Serial.begin(9600); // For debugging pinMode(led, OUTPUT); //pinMode (sensor, INPUT); } void loop() { valeur = analogRead(sensor); // Reads the value from the Analog PIN A0 Serial.print("Sound Level: "); Serial.println(valeur);//print the value if(valeur>=threshold) { digitalWrite(led, HIGH); //Turn ON Led delay(200); } else { digitalWrite(led, LOW); // Turn OFF Led } delay(100); }

And i would like to convert these values that the sensor measure into decibels :

This what the graph shows me :

this is the link for the datasheet of the sound sensor https://github.com/Arduinolibrary/DFRob ... f?raw=true

2018-01-20 00:06:12 https://circuitdigest.com/microcontroll ... easurement
I found this project, hope this will helpful robert.chen

2018-01-19 02:23:13 I have the datasheet of the mic and the datasheet of the sound sensor, i m powering my sound sensor at 5V so I think that should not be complicated to convert it into DB. alexandre.riasat

2018-01-19 00:19:34 This sensor can only output analog voltage of the sound, the algorithm covert to dB is sophisticated. This sound level meter can output dB directly https://www.dfrobot.com/product-1663.html robert.chen

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	int led = 13;
	int threshold = 100; //Change This
	int sensor = A0;
	int valeur ;

	void setup() {
	Serial.begin(9600); // For debugging
	pinMode(led, OUTPUT);
	//pinMode (sensor, INPUT);
	}

	void loop() {

	valeur = analogRead(sensor); // Reads the value from the Analog PIN A0
	Serial.print("Sound Level: ");
	Serial.println(valeur);//print the value


	if(valeur>=threshold)
	{
	digitalWrite(led, HIGH); //Turn ON Led
	delay(200);
	}
	else
	{
	digitalWrite(led, LOW); // Turn OFF Led
	}
	delay(100);
	}