verifiedrfidservo.ino

// Modified by Worapoht K. and Jonathan Gottfried
#include <SoftwareSerial.h>
#include <Servo.h>

int  val = 0; 
char code[10]; 
int bytesread = 0; 

int rfidPin = 2;
#define rxPin 8
#define txPin 9
SoftwareSerial RFID = SoftwareSerial(rxPin,txPin); 
// RFID reader SOUT pin connected to Serial RX pin at 2400bps to pin8

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

String keyCode;
String real = "0415D952E0"; //this is my RFID tag, make sure to insert your own here

void setup()
{ 
  Serial.begin(2400);  // Hardware serial for Monitor 2400bps

  pinMode(rfidPin,OUTPUT);       // Set digital pin 2 as OUTPUT to connect it to the RFID /ENABLE pin 
  digitalWrite(rfidPin, LOW);    // Activate the RFID reader 
  
  RFID.begin(2400);  
  
  myservo.attach(servoPin);
  myservo.write(lock); //my servo is locked at position 0, yours might be locked at position 180 - test this!
  delay(1000); //pause while the servo moves to the locked position
}


void loop()
{ 
  if((val = RFID.read()) == 10)
  {   // check for header 
    bytesread = 0; 
    while(bytesread<10)
    {  // read 10 digit code 
      val = RFID.read(); 
      if((val == 10)||(val == 13))
      {  // if header or stop bytes before the 10 digit reading 
        break;                       // stop reading 
      } 
      code[bytesread] = val;         // add the digit           
      bytesread++;                   // ready to read next digit  
    } 

    if(bytesread == 10)
    {  // if 10 digit read is complete 
      Serial.print("TAG code is: ");   // possibly a good TAG 
      Serial.println(code);            // print the TAG code 

      keyCode = code;
      keyCode = keyCode.substring(0,10); //turn our code into a 10-digit String
      
      if (keyCode.equals(real)) {
        Serial.println("Code Verified!");
        if (myservo.read() >= 90)
        {
          Serial.println("Locking door!");
          myservo.write(lock); //lock
        }
        else {
          Serial.println("Unlocking door!");
          myservo.write(unlock); //unlock
        }
        delay(3000); //wait for servo to lock/unlock
        Serial.println("Finished unlocking/locking door.");
      }
    }
    bytesread = 0; 
    delay(500);                       // wait for a second
  } 
}