int sensorPin = A0;    // select the input pin for the potentiometer
int ledPin13 = 13;      // select the pin for the LED
int ledPin12 = 12;
int ledPin11 = 11;
int ledPin10 = 10;
int ledPin9 = 9;
int ledPin8 = 8;
int ledPin7 = 7;
int ledPin6 = 6;
int sensorValue = 0;  // variable to store the value coming from the sensor

void setup() {
  // declare the ledPin as an OUTPUT:
  pinMode(ledPin13, OUTPUT);
  pinMode(ledPin12, OUTPUT);
  pinMode(ledPin11, OUTPUT);
  pinMode(ledPin10, OUTPUT);
  pinMode(ledPin9, OUTPUT);
  pinMode(ledPin8, OUTPUT);
  pinMode(ledPin7, OUTPUT);
  pinMode(ledPin6, OUTPUT);

  Serial.begin(9600);
  
}

void loop() {
  
  // read the value from the sensor:
  sensorValue = analogRead(sensorPin);
  
  Serial.println(sensorValue);   
  
//while (sensorValue > 100 && sensorValue < 400) {
  
 if( sensorValue > 80 ) {
      digitalWrite(ledPin13, HIGH);
 } else {
      digitalWrite(ledPin13, LOW); }
      
 if( sensorValue > 90 ) {
      digitalWrite(ledPin12, HIGH);
 } else {
      digitalWrite(ledPin12, LOW); }
      
 if( sensorValue > 100 ) {
      digitalWrite(ledPin11, HIGH);
 } else {
      digitalWrite(ledPin11, LOW); }
      
 if( sensorValue > 110 ) {
      digitalWrite(ledPin10, HIGH);
 } else {
      digitalWrite(ledPin10, LOW); }
      
 if( sensorValue > 120 ) {
      digitalWrite(ledPin9, HIGH);
 } else {
      digitalWrite(ledPin9, LOW); }
      
 if( sensorValue > 130 ) {
      digitalWrite(ledPin8, HIGH);
 } else {
      digitalWrite(ledPin8, LOW); }
      
 if( sensorValue > 140 ) {
      digitalWrite(ledPin7, HIGH);
 } else {
      digitalWrite(ledPin7, LOW); }
      
 if( sensorValue > 150 ) {
      digitalWrite(ledPin6, HIGH);
 } else {
      digitalWrite(ledPin6, LOW); }

delay(100);
}