#include <Servo.h> 
#define SERVO_PIN 3 //define as a constant the SERVO PIN
Servo Servo1; 
int Zeit = 800;
void setup() {
pinMode(SERVO_PIN, OUTPUT); //setup the pin as output
Servo1.attach(SERVO_PIN);    

}

void loop() {
 Servo1.write(0);
 delay(Zeit);
 Servo1.write(90);
 delay(Zeit);
 Servo1.write(120);
 delay(Zeit);
 Servo1.write(160);
 delay(Zeit);
}