#include <Servo.h>
Servo muhaservo;
#define servoPin 5
int angle = 0;  
void setup()
{
  muhaservo.attach(servoPin);
}
void loop()
{
  muhaservo.write(90);
  delay(1000);
  muhaservo.write(180);
  delay(1000);
  muhaservo.write(0);
  delay(1000);
  for (angle = 0; angle <= 180; angle += 1) 
  {
  muhaservo.write(angle);
  delay(15);
  }
  for (angle = 180; angle >=0;angle -= 1) 
  {
  muhaservo.write(angle);
  delay(1000);
  }
  delay(1000);
}