// FOR PASSERBY: This code is part of a robot I'm making that will move towards
// the direction of sound. The code below is mostly interfacing with mics, however,
// I've added a digitalWrite of HIGH to pin 8 to test my transistor circuit for now.

int micPin = A0;
int sum = 0;
int avg = 1023/2;
int arduinoLED = 13;
int motorPin = 8;

void setup() {
  pinMode(arduinoLED, OUTPUT);
  Serial.begin(9600);
  analogReference(DEFAULT);
  for(int i = 0; i < 500; i++)
  {
    avg = avg + analogRead(micPin);
    avg = avg/2;
  }
  Serial.print("Average value: ");
  Serial.println(avg);
}

void loop() {
  digitalWrite(motorPin, HIGH);				// TEST PIN HERE
  Serial.println(analogRead(micPin));
  if (analogRead(micPin) > avg*1.04)
    digitalWrite(arduinoLED, HIGH);
  else
    digitalWrite(arduinoLED, LOW);


  //delay(150);

}