const int sensorMin = 0;    // sensor minimum, discovered through experiment
const int sensorMax = 600;  // sensor maximum, discovered through experiment
int led1 = 2;
int led2 = 3;
int led3 = 4;
int led4 = 5;
int led5 = 6;
int led6 = 7;
int led7 = 8;
int led8 = 9;
int led9 = 10;
int led10 = 11;
void setup() {
  // initialize serial communication:
  Serial.begin(9600);
}

void loop() {
  
  // read the sensor:
  int sensorReading = analogRead(A0);
  // map the sensor range to a range of four options:
  int range = map(sensorReading, sensorMin, sensorMax, 0, 10);

  // do something different depending on the range value:
  switch (range) {
    
    case 0:
    digitalWrite(led1, LOW);
    Serial.println("of");
    
     digitalWrite(led2, LOW);
    digitalWrite(led3, LOW);
     digitalWrite(led4, LOW);
    
    break;
    
    
    
    case 1:  // your hand is on the sensor
      Serial.println("led1 on");
      digitalWrite(led1, HIGH);
      digitalWrite(led2, LOW);
    digitalWrite(led3, LOW);
     digitalWrite(led4, LOW);
      break;
      
    case 2:  // your hand is close to the sensor
      Serial.println("led1 and 2 on");
      digitalWrite(led1, HIGH);
      digitalWrite(led2, HIGH);
      
    digitalWrite(led3, LOW);
     digitalWrite(led4, LOW);
      break;
      
    case 3:  // your hand is a few inches from the sensor
      Serial.println("led1 2 and 3 on");
      digitalWrite(led1, HIGH);
      digitalWrite(led2, HIGH);
      digitalWrite(led3, HIGH);
      digitalWrite(led4, LOW);
      break;
      
    case 4:  // your hand is nowhere near the sensor
      Serial.println("led1 2 3 and 4 on");
      digitalWrite(led1, HIGH);
      digitalWrite(led2, HIGH);
      digitalWrite(led3, HIGH);
      digitalWrite(led4, HIGH);
      digitalWrite(led5, LOW);
      break;


      case 5:
      digitalWrite(led1, HIGH);
      digitalWrite(led2, HIGH);
      digitalWrite(led3, HIGH);
      digitalWrite(led4, HIGH);
      digitalWrite(led5, HIGH);
      digitalWrite(led6, LOW);
      digitalWrite(led7, LOW);
      digitalWrite(led8, LOW);
      digitalWrite(led9, LOW);
      digitalWrite(led10, LOW);
     


      break;

      case 6:
digitalWrite(led1, HIGH);
      digitalWrite(led2, HIGH);
      digitalWrite(led3, HIGH);
      digitalWrite(led4, HIGH);
      digitalWrite(led5, HIGH);
      digitalWrite(led6, HIGH);
      digitalWrite(led7, LOW);
      digitalWrite(led8, LOW);
      digitalWrite(led9, LOW);
      digitalWrite(led10, LOW);

      break;
      case 7:
      digitalWrite(led1, HIGH);
      digitalWrite(led2, HIGH);
      digitalWrite(led3, HIGH);
      digitalWrite(led4, HIGH);
      digitalWrite(led5, HIGH);
      digitalWrite(led6, HIGH);
      digitalWrite(led7, HIGH);
      digitalWrite(led8, LOW);
      digitalWrite(led9, LOW);
      digitalWrite(led10, LOW);


      break;
      case 8:
digitalWrite(led1, HIGH);
      digitalWrite(led2, HIGH);
      digitalWrite(led3, HIGH);
      digitalWrite(led4, HIGH);
      digitalWrite(led5, HIGH);
      digitalWrite(led6, HIGH);
      digitalWrite(led7, HIGH);
      digitalWrite(led8, HIGH);
      digitalWrite(led9, LOW);
      digitalWrite(led10, LOW);

      break;
      case 9:
digitalWrite(led1, HIGH);
      digitalWrite(led2, HIGH);
      digitalWrite(led3, HIGH);
      digitalWrite(led4, HIGH);
      digitalWrite(led5, HIGH);
      digitalWrite(led6, HIGH);
      digitalWrite(led7, HIGH);
      digitalWrite(led8, HIGH);
      digitalWrite(led9, HIGH);
      digitalWrite(led10, LOW);

      break;
      case 10:
      digitalWrite(led1, HIGH);
      digitalWrite(led2, HIGH);
      digitalWrite(led3, HIGH);
      digitalWrite(led4, HIGH);
      digitalWrite(led5, HIGH);
      digitalWrite(led6, HIGH);
      digitalWrite(led7, HIGH);
      digitalWrite(led8, HIGH);
      digitalWrite(led9, HIGH);
      digitalWrite(led10, HIGH);
      break;

      
  }
  delay(1);  // delay in between reads for stability
  
}