#include <Servo.h>

Servo myservo;

int button = 2;
int led = 3;
int relay = 4;

int buttonState = 0;
int servoPosition = 0;
bool ledLit = false;

void setup() {
  myservo.attach(5);
  pinMode(button, INPUT_PULLUP);
  pinMode(led, OUTPUT);
  pinMode(relay, OUTPUT);

}

void loop() {
  buttonState = digitalRead(button);

  if(buttonState == LOW) {
    servoPosition += 20;
    if (servoPosition > 180) {
      servoPosition = 0;
    }

    myservo.write(servoPosition);

    if (servoPosition == 180 && !ledLit){
      digitalWrite(led, HIGH);
      digitalWrite(relay, HIGH);
      ledLit = true;
    }
    else if (servoPosition != 180){
      digitalWrite(led, LOW);
      digitalWrite(relay, LOW);
      ledLit =false;
    }
      delay(500);
  }
}