AUDIO

Nota: conexión en puerto analógicos, datos y voltaje

/*
The circuit:
analog 3: audio in
analog 4: ground
analog 5: vcc
*/

// these constants describe the pins. They won't change:
const int groundpin = 18;             // analog input pin 4 -- ground
const int powerpin = 19;              // analog input pin 5 -- voltage
const int AUDIOpin = A3;             // audio in

void setup()
{
// initialize the serial communications:
Serial.begin(9600);

// Provide ground and power by using the analog inputs as normal
// digital pins. This makes it possible to directly connect the
// breakout board to the Arduino. If you use the normal 5V and
// GND pins on the Arduino, you can remove these lines.
pinMode(groundpin, OUTPUT);
pinMode(powerpin, OUTPUT);
digitalWrite(groundpin, LOW);
digitalWrite(powerpin, HIGH);
pinMode(13, OUTPUT);
}

void loop()
{
// print the sensor values:
Serial.print(analogRead(AUDIOpin));

Serial.println();
// delay before next reading:
if ((analogRead(AUDIOpin))>558){   // ajustar segun sonido ambiente
    digitalWrite(13, HIGH);   // set the LED on
    delay(500);              // wait for a second
    digitalWrite(13, LOW);    // set the LED off
}
delay(1);
}