program.txt

 //control servo motor with serial monitering window - by ujash patel
  //for more go to www.uu-machinetool.blogspot.com
#include <Servo.h> 
 
Servo myservo;  // create servo object to control a servo 
                // a maximum of eight servo objects can be created 
 
int pos = 0;
int servodata;

void setup()  {
 Serial.begin(9600);  
Serial.println("Redy");
Serial.println("select speed 1 for 15ms delay ");
Serial.println("select speed 2 for 25ms delay");
Serial.println("select speed 3 for 5ms delay");
  myservo.attach(9);
  
}

void loop()   
{
  if (Serial.available() > 0)
  {
   servodata = Serial.read();
    
    if(servodata == '1') // Single Quote! This is a character.
    {
      Serial.println("speed 1 is selected");
      Serial.println("DELAY 15MS");
     for(pos = 0; pos < 180; pos += 1)  // goes from 0 degrees to 180 degrees 
  {                                  // in steps of 1 degree 
    myservo.write(pos);              // tell servo to go to position in variable 'pos' 
    delay(15);                       // waits 15ms for the servo to reach the position 
  } 
  for(pos = 180; pos>=1; pos-=1)     // goes from 180 degrees to 0 degrees 
  {                                
    myservo.write(pos);              // tell servo to go to position in variable 'pos' 
    delay(15);                       // waits 15ms for the servo to reach the position 
  } 
    }
    
    if(servodata== '2')
    {
      Serial.println("speed 2 is selected");
      Serial.println("DELAY 25MS ");
     for(pos = 0; pos < 180; pos += 1)  // goes from 0 degrees to 180 degrees 
  {                                  // in steps of 1 degree 
    myservo.write(pos);              // tell servo to go to position in variable 'pos' 
    delay(25);             // waits 15ms for the servo to reach the position 
  } 
  for(pos = 180; pos>=1; pos-=1)     // goes from 180 degrees to 0 degrees 
  {                                
    myservo.write(pos);              // tell servo to go to position in variable 'pos' 
    delay(25);               // waits 15ms for the servo to reach the position 
  } 
    }
   if(servodata == '3')
    {
      Serial.println("speed 3 is selected");
      Serial.println("DELAY 5MS ");
     for(pos = 0; pos < 180; pos += 1)  // goes from 0 degrees to 180 degrees 
  {                                  // in steps of 1 degree 
    myservo.write(pos);              // tell servo to go to position in variable 'pos' 
    delay(5);         // waits 15ms for the servo to reach the position 
  } 
  for(pos = 180; pos>=1; pos-=1)     // goes from 180 degrees to 0 degrees 
  {                                
    myservo.write(pos);              // tell servo to go to position in variable 'pos' 
    delay(5);              // waits 15ms for the servo to reach the position 
  } 
    }
    
    Serial.println();    // End the line

  
  }
}