Grove - Sound Sensor

IoT/Intel Edison

Grove - Sound Sensor

appmarkers 2015. 1. 24. 22:18

Grove - Sound Sensor can detect the sound strength of the environment.

The main component of the module is a simple microphone, which is based on the LM358 amplifier and an electret microphone.

This module's output is analog and can be easily sampled and tested by a Seeeduino.

Hardware Required

- Intel® Edison Module

- Arduino* expansion board

- Grove Base Shield v2

- Grove Sound Sensor

Circuit

Schematic

Code

// Function: If the sound sensor senses a sound that is up to the threshold you set in the code, the LED is on for 200ms.

// Hardware: Grove - Sound Sensor, Grove - LED

/*macro definitions of the sound sensor and the LED*/

#define SOUND_SENSOR A0

#define LED 2 // the number of the LED pin

#define THRESHOLD_VALUE 400//The threshold to turn the led on 400.00*5/1024 = 1.95v

void setup()

{

Serial.begin(115200);

pins_init();

}

void loop()

{

int sensorValue = analogRead(SOUND_SENSOR);//use A0 to read the electrical signal

Serial.print("sensorValue ");

Serial.println(sensorValue);

if(sensorValue > THRESHOLD_VALUE)

{

turnOnLED();//if the value read from A0 is larger than 400,then light the LED

delay(200);

}

turnOffLED();

}

void pins_init()

{

pinMode(LED, OUTPUT);

pinMode(SOUND_SENSOR, INPUT);

}

void turnOnLED()

{

digitalWrite(LED,HIGH);

}

void turnOffLED()

{

digitalWrite(LED,LOW);

}