const int potMin = 0;
const int potMax = 1023;
byte Red_Led = 5;
byte Green_Led = 4;
byte Blue_Led = 3;
byte Yellow_Led = 2;
int pot;

void setup() {  
  pinMode(Red_Led, OUTPUT);
  pinMode(Green_Led, OUTPUT);
  pinMode(Blue_Led, OUTPUT);
  pinMode(Yellow_Led, OUTPUT);
  Serial.begin(9600);
}

void loop() {
  pot = analogRead(A0);

  int number = map(pot, potMin, potMax, 0, 8); // put your main code here, to run repeatedly:


  switch (number) {
    case 0:
      Serial.println("0");
      digitalWrite(Red_Led,LOW);
      digitalWrite(Green_Led,LOW);
      digitalWrite(Blue_Led,LOW);
      digitalWrite(Yellow_Led,LOW);
      break;
    case 1:
      Serial.println("1");
      digitalWrite(Red_Led,LOW);
      digitalWrite(Green_Led,LOW);
      digitalWrite(Blue_Led,LOW);
      digitalWrite(Yellow_Led,HIGH);
      break;
    case 2:
      Serial.println("2");
      digitalWrite(Red_Led,LOW);
      digitalWrite(Green_Led,LOW);
      digitalWrite(Blue_Led,HIGH);
      digitalWrite(Yellow_Led,LOW);
      break;
    case 3:
      Serial.println("3");
      digitalWrite(Red_Led,LOW);
      digitalWrite(Green_Led,LOW);
      digitalWrite(Blue_Led,HIGH);
      digitalWrite(Yellow_Led,HIGH);
      break;
    case 4:
      Serial.println("4");
      digitalWrite(Red_Led,LOW);
      digitalWrite(Green_Led,HIGH);
      digitalWrite(Blue_Led,LOW);
      digitalWrite(Yellow_Led,LOW);
      break;
    case 5:
      Serial.println("5");
      digitalWrite(Red_Led,LOW);
      digitalWrite(Green_Led,HIGH);
      digitalWrite(Blue_Led,LOW);
      digitalWrite(Yellow_Led,HIGH);
      break;
    case 6:
      Serial.println("6");
      digitalWrite(Red_Led,LOW);
      digitalWrite(Green_Led,HIGH);
      digitalWrite(Blue_Led,HIGH);
      digitalWrite(Yellow_Led,LOW);
      break;
    case 7:
      Serial.println("7");
      digitalWrite(Red_Led,LOW);
      digitalWrite(Green_Led,HIGH);
      digitalWrite(Blue_Led,HIGH);
      digitalWrite(Yellow_Led,HIGH);
      break;
    case 8:
      Serial.println("8");
      digitalWrite(Red_Led,HIGH);
      digitalWrite(Green_Led,LOW);
      digitalWrite(Blue_Led,LOW);
      digitalWrite(Yellow_Led,LOW);
      break;
  }
  delay(100);
 digitalWrite(Red_Led,LOW);
 digitalWrite(Green_Led,LOW);
 digitalWrite(Blue_Led,LOW);
 digitalWrite(Yellow_Led,LOW);
}