int sensorPort = 45;
int sensorVal = 0;
int led = 9;
int ledState = LOW;
unsigned long previousMilis_LED = 0;
bool state = HIGH;
int x = 2;
int i = 6;
void setup() {
  Serial.begin(9600);
  for(int x = 2; x <= 8; x++){
    pinMode(x, OUTPUT);
  }
}

void loop() {

  int potenciometer = analogRead(A0);
  int interval = map(potenciometer, 0, 1023, 1, 10);
  Serial.println("Interval je: " + String(interval) + " sekund.");
  unsigned long currentMilis = millis();
  
  if(currentMilis - previousMilis_LED >= interval*1000 ) {
    
    state = !state;
    previousMilis_LED = currentMilis;
    digitalWrite(i, LOW);
    i++;
    if(x == 8||x == 2 ){
      led = -led;
      x = x + led;
    }
    digitalWrite(i, HIGH);    
  }

}