// Read data from the serial port and set the position of a servomotor 
// according to the value
//
#include <Servo.h>

Servo myservo;                   // Create servo object to control a servo
int servoPin = 3;                // Connect yellow servo wire to digital I/O pin 3 (TX) 
int val = 0;                     // Data received from the serial port

void setup() {
  myservo.attach(servoPin);      // Attach the servo to the PWM pin
  Serial.begin(9600);           // Start serial communication at 9600 bps
}

void loop() {
  if (Serial.available()) {      // If data is available to read,
    val = Serial.read();         // read it and store it in val 
  } 
  myservo.write(val);            // Set the servo position
  delay(15);                     // Wait for the servo to get there
}