int led[] = {
  6, 7, 8, 9, 10, 11, 12, 13
}; 

int NumOfLeds = 8;
const int analogPin = A0;
int Buzzerpin = 2;

void setup() {
  for(int i = 0; i < NumOfLeds; i++){
    pinMode(led[i], OUTPUT);
    digitalWrite(led[i], LOW);
  }
  pinMode(Buzzerpin, OUTPUT);
}

void loop() {

   int sensorReading = analogRead(analogPin);
  // map the result to a range from 0 to the number of LEDs:
  int ledLevel = map(sensorReading, 0, 1023, 0, NumOfLeds);

  // loop over the LED array:
  for (int thisLed = 0; thisLed < NumOfLeds; thisLed++) {
    // if the array element's index is less than ledLevel,
    // turn the pin for this element on:
    if (thisLed < ledLevel) {
      digitalWrite(led[thisLed], HIGH);
    }
    // turn off all pins higher than the ledLevel:
    else {
      digitalWrite(led[thisLed], LOW);
    }
  }

  tone(Buzzerpin, sensorReading);
}
//made by: pio200