Using the Buzzer

/*Kaiti Ness
 *6/21/17
 *Using the Buzzer
 */


const int photoPin = A0;
const int piezoPin = 8;
int Min = 40;
int Max = 1000;
int photoVal = 0;

int minVal= 1000;
int maxVal= -1000;
unsigned long timeVal = 0;



void setup()
{
  pinMode(photoPin, INPUT);
  pinMode(piezoPin, OUTPUT);
  Serial.begin(9600);





}

void loop()
{

  minVal= 40;
maxVal= 1000;
  timeVal = millis();
  while(millis() - timeVal < 5000)
  {
    photoVal = analogRead(photoPin);
    if(photoVal > maxVal)
    {
      maxVal = photoVal;
    }
    else if(photoVal < minVal)
    {
      minVal = photoVal;
    }
  }

  Serial.println (Min);
  Serial.println (minVal);
  Serial.println (Max);
  Serial.println (maxVal);

  photoVal = analogRead(photoPin);
  photoVal = map(photoVal, minVal, maxVal, Min, Max);
  tone(piezoPin, photoVal, 20);
  noTone(piezoPin);
  delay(100);



}