#include <Servo.h>
#define PIN_SERVO 11
#define ledg 10
#define ledr 9

String odebraneDane = "";
Servo servo;


void setup(){
  servo.attach(PIN_SERVO);
  pinMode(ledg, OUTPUT);
  pinMode(ledr, OUTPUT);
  Serial.begin(9600);
  servo.write(0);
}

void loop(){
  if(Serial.available() > 0) {
    odebraneDane = Serial.readStringUntil('\n');

      if (odebraneDane == "haslo"){
        odebraneDane == "";
        digitalWrite(ledg, HIGH);
        delay(2000);
        digitalWrite(ledg, LOW);

        servo.write(90);
        delay(2000);
        servo.write(0);
        }
    else {
      Serial.println("Bledne haslo!");
      digitalWrite(ledr, HIGH);
      delay(2000);
      digitalWrite(ledr, LOW);
    }
  }
}