int crvLed = 11;
int zelLed = 10;
int sinLed = 9;
int potPin = A3;
int vrednost;
int rezultat;

void setup() {
  pinMode(crvLed, OUTPUT);
  pinMode(zelLed, OUTPUT);
  pinMode(sinLed, OUTPUT);
  pinMode(potPin, INPUT);
  Serial.begin(9600);
}

void loop() {
  vrednost = analogRead(potPin);
  rezultat =(7./1023.)*vrednost;
  Serial.println(rezultat);
  
  if (rezultat == 0){
    digitalWrite(crvLed, HIGH);
    digitalWrite(zelLed, HIGH);
    digitalWrite(sinLed, HIGH);
  }
  else if(rezultat == 1 ){
    digitalWrite(crvLed, LOW);
    digitalWrite(zelLed, HIGH);
    digitalWrite(sinLed, HIGH); 
  }
  else if(rezultat == 2 ){
    digitalWrite(crvLed, HIGH);
    digitalWrite(zelLed, LOW);
    digitalWrite(sinLed, HIGH); 
  }
  else if(rezultat == 3 ){
    digitalWrite(crvLed, HIGH);
    digitalWrite(zelLed, HIGH);
    digitalWrite(sinLed, LOW); 
  }
  else if(rezultat == 4 ){
    digitalWrite(crvLed, LOW);
    digitalWrite(zelLed, LOW);
    digitalWrite(sinLed, HIGH); 
  }
  else if(rezultat == 5 ){
    digitalWrite(crvLed, LOW);
    digitalWrite(zelLed, HIGH);
    digitalWrite(sinLed, LOW); 
  }
  else if(rezultat == 6 ){
    digitalWrite(crvLed, HIGH);
    digitalWrite(zelLed, LOW);
    digitalWrite(sinLed, LOW); 
  }
  else {
    digitalWrite(crvLed, LOW);
    digitalWrite(zelLed, LOW);
    digitalWrite(sinLed, LOW); 
  }
}