#include <Servo.h>

const int buttonPin = 2;
const int ServoPin = 3;
const int ledPin = 13;

Servo servo;
int counter = 0;
int buttonState = 0;
int lastButtonState = HIGH;
unsigned long lastDebounceTime = 0;
unsigned long debounceDelay = 50;

void setup() {
  servo.attach(ServoPin);
  pinMode(buttonPin, INPUT);
  pinMode(ledPin, OUTPUT);
}

void loop() {
  int reading = digitalRead(buttonPin);

  if (reading != lastButtonState) {
    lastDebounceTime = millis();
  }

  if ((millis() - lastDebounceTime) > debounceDelay) {
    if (reading == LOW && lastButtonState == HIGH) {
      counter++;

      if (counter == 0) {
        servo.write(0);
      } 
      else if (counter == 1) {
        servo.write(45);
      } 
      else if (counter == 2) {
        servo.write(90);
      } 
      else {
        counter = 0;
        servo.write(0);
      }

      digitalWrite(ledPin, HIGH);
    }
  }

  if (reading == HIGH) {
    digitalWrite(ledPin, LOW);
  }

  lastButtonState = reading;
}