void setup(){
  pinMode(5,OUTPUT); //set the pin to output
  Serial.begin(9600); //open the serial to print
  Serial.print(“Ready”); //write a message
}
void loop(){
  int val = Serial.read(); //read the serial to see
  if(val>’0’ && val <= ‘9’){ //which key was pressed
    val = val - ‘0’; //convert the character to an integer
    val = val * (180/9); //9 divisions of 180 degrees
    Serial.print(“moving servo to “);
    Serial.print(val,DEC);
    Serial.println();
    for(int a=0; a<50; a++){
      int pulseWidth = (val*11)+500; // See the formula above
      digitalWrite(5,HIGH);
      delayMicroseconds(pulseWidth);
      digitalWrite(5,LOW);
      delay(20);
    }
  }
}