Phototransistor

This example is for Wiring version 0024+. If you have a previous version, use the examples included with your software. If you see any errors or have comments, please let us know.

microphone by Diana Fernandez

Reads values from a microphone connected to the analog input pin 0. The value read from the microphone is proportional to the level of sound in the near environment. The value read is printed through the serial to be monitored in the console.


int val; 

void setup()
{
  Serial.begin(9600);      // sets the serial port to 9600
}

void loop() 
{
  val = analogRead(0);     // read analog input pin 0
  Serial.print(val, DEC);  // prints the value read
  Serial.print(" ");	   // prints a space between the numbers
  delay(100);              // wait 100ms for next reading
}