int ledky = 6;					//inicializácia
int ledPins[] = {5, 6, 7, 8, 9};
int fotoPin = A0;
int senzor = 0;
int ledLevel = 0;

void setup() {
  Serial.begin(9600);
  pinMode(5, OUTPUT);
  pinMode(6, OUTPUT);
  pinMode(7, OUTPUT);
  pinMode(8, OUTPUT);
  pinMode(9, OUTPUT);
}
void loop() {
  senzor = analogRead(fotoPin);		//citanie hodnot zo senzora
  Serial.println(senzor);
  ledLevel = map(senzor, 600, 1000, 0, 6);  //rozsvietenie lediek podla hodnot
  for (int led = 0; led < ledky; led++) {
    if (led < ledLevel) {
      digitalWrite(ledPins[led], LOW);
    } else {
      digitalWrite(ledPins[led], HIGH);
    }
  }
}