// Moves a servo and toggles an LED
#include <Servo.h> 
 
Servo myservo;
const int servoPin = 9;
const int ledPin = 13; // the pin that the LED is attached to
int incomingByte;    

void setup() {
  Serial.begin(9600);
  pinMode(ledPin, OUTPUT);
  myservo.attach(servoPin);
}

void loop() 
{
  if (Serial.available() > 0) {
    incomingByte = Serial.read();
    
    if( incomingByte == 'H' )
    {
          digitalWrite(ledPin, HIGH);
          Serial.println("On");
    } else if (incomingByte == 'L') {
          digitalWrite(ledPin, LOW);
          Serial.println("Off");
    } else if (incomingByte >= '0' && incomingByte <= '9') { 
          int pos = (incomingByte -'0') * 20;  
          myservo.write( pos);
          Serial.println(pos, DEC);
    }
  } 
}