nodelock.ino

#include <Servo.h>

Servo myservo;
int servoPin = 12;
int lock = 0;
int unlock = 180;

void setup() {
  // initialize serial:
  Serial.begin(9600);
  myservo.attach(servoPin);
  myservo.write(lock);
}

void loop() {
   // Recieve data from Node and write it to a String
   while (Serial.available()) {
    char inChar = (char)Serial.read();
    if(inChar == 'V'){ // end character for locking
     if (myservo.read() >= 90) {
       Serial.println("L");
       myservo.write(lock);
       delay(3000);
     }
     else {
       Serial.println("U");
       myservo.write(unlock);
       delay(3000);
     }
    }
  }  
}