/*
  Forum: https://forum.arduino.cc/t/einfache-if-schleife/1176612
  Wokwi: https://wokwi.com/projects/378131745444560897

*/

#include <Servo.h> 

int servoPin = 9;
const int button_pin = 13;
 
Servo servo;  
 
int closed = 90;   // servo position in degrees 
int open = 0;
int state = 1;
int button;
 

void setup() 
{ 
  Serial.begin(9600);
  servo.attach(servoPin); 
  pinMode(button_pin, INPUT_PULLUP);
  servo.write(open);
} 
 
 
void loop() 
{ 
  button = digitalRead(button_pin);
  Serial.print(button);
  Serial.println(state);

  if (button == 0 && state == 0){
    delay(30);
    servo.write(open);
    state = 1;
    delay(1000);
    
  }

  if (button == 0 && state == 1){
    delay(30);
    servo.write(closed);
    state = 0;
    delay(1000);
  }

}