int buttonOld = 2;
int buttonNew = 10;

void setup() {
  // put your setup code here, to run once:
  pinMode(buttonOld, INPUT)
  pinMode(buttonNew, INPUT_PULLUP);
  Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
  
  // stare zapojenie 
  //bool buttonOld = digitalRead(buttonOld);
  //Serial.println(buttonOld);


  bool btnStateNew = !(digitalRead(buttonNew));
  
  Serial.println(btnStateBew);


}