RFID Card (Smart card)

         

          Code's 

 #include <SPI.h>

#include <MFRC522.h>

#include <Servo.h>

 #define SS_PIN 10

#define RST_PIN 9

#define SERVO_PIN 3

Servo myservo;

#define ACCESS_DELAY 2000

#define DENIED_DELAY 1000

MFRC522 mfrc522(SS_PIN, RST_PIN); // Create MFRC522 instance.

 

void setup()

{

 Serial.begin(9600); // Initiate a serial communication

SPI.begin(); // Initiate SPI bus

  mfrc522.PCD_Init(); // Initiate MFRC522

  myservo.attach(SERVO_PIN);

myservo.write( 70 );

delay(7500);

myservo.write( 0 );

Serial.println("Put your card to the reader...");

Serial.println();

}

void loop()

{

  // Look for new cards

  if ( ! mfrc522.PICC_IsNewCardPresent())

  {

    return;

  }

  // Select one of the cards

  if ( ! mfrc522.PICC_ReadCardSerial())

  {

    return;

  }

  //Show UID on serial monitor

  Serial.print("UID tag :");

  String content= "";

  byte letter;

  for (byte i = 0; i < mfrc522.uid.size; i++)

  {

     Serial.print(mfrc522.uid.uidByte[i] < 0x10 ? " 0" : " ");

     Serial.print(mfrc522.uid.uidByte[i], HEX);

     content.concat(String(mfrc522.uid.uidByte[i] < 0x10 ? " 0" : " "));

     content.concat(String(mfrc522.uid.uidByte[i], HEX));

  }

  Serial.println();

  Serial.print("Message : ");

  content.toUpperCase();

  if (content.substring(1) == "69 C8 E2 2A") //change here the UID of the card

  {

    Serial.println("Authorized access");

    Serial.println();

   myservo.write( 70 );

 delay(7500);

  myservo.write( 0 );

  }

 

 else {

    Serial.println(" Access denied");

Delay(DENIED_DELAY);

 

  }

}