Program:

​

#include <Servo.h>             // This header library file add's the necessary instructions to use the servo

Servo samri_servo;             //  This instruction names the servo for convenience

  

void setup() {

samri_servo.attach(PD4);   // attaches the servo named above to output PD4 

 

}

​

void loop() {
  
    samri_servo.write(0);       // This instructions sets the servo to zero (0) degree's       
    delay(1000);                      //  ... and then pauses for 1000mS ( 1 second ) 
  
 
    samri_servo.write(180);    // This instruction sets the servo to 180 degree's

    delay(1000);                       //... and pauses again. 
  
}