#include <Servo.h>
#include <MFRC522.h>
#include <SPI.h>
#define SS_PIN 10
#define RST_PIN 9
const int led1=5;
const int led2=3;
MFRC522 mfrc522(SS_PIN, RST_PIN);
Servo servo1;
#define ACCESS_DELAY 2000
#define DENIED_DELAY 1000
void setup()
{
Serial.begin(9600);
SPI.begin();
mfrc522.PCD_Init();
servo1.attach(4);
pinMode(led1, OUTPUT);
pinMode(led2, OUTPUT);
Serial.println("Put your card to the reader...");
Serial.println();
}
void loop()
{
if ( ! mfrc522.PICC_IsNewCardPresent())
{
return;
}
if ( ! mfrc522.PICC_ReadCardSerial()) {
return;
}
Serial.println("UID tag :");
String content= "";
byte letter;
for (byte i = 0; i < mfrc522.uid.size; i++)
{
Serial.println(mfrc522.uid.uidByte[i] < 0x10 ? " 0" : " ");
Serial.println(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) == "87 F0 F0 A7") //change here the UID of the card
{
Serial.println("Authorized access");
Serial.println();
digitalWrite(led2, HIGH);
delay(1000);
digitalWrite(led2, LOW);
servo1.write(90);
delay(3000);
servo1.write(180);
delay(500);
}
else {
Serial.println(" Access denied");
Serial.println();
digitalWrite(led1, HIGH);
delay(1000);
digitalWrite(led1, LOW);
delay(1000);
servo1.write(180);
delay(100);
delay(DENIED_DELAY);
}
}
