Fwd: అందరికీ పంపతగినది: RFID 522 link to learn 100%

---------- Forwarded message ---------
From: pingili vikram kumar <vikramkumar.volunteer@gmail.com>
Date: Sat, Mar 4, 2023, 14:42
Subject: Fwd: అందరికీ పంపతగినది: RFID 522 link to learn 100%
To: <satyasaianilmallavarapu@gmail.com>

Subject: RFID 522 link to learn 100%
To:

How to Make Arduino Security Access Lock | RFID MFRC522 - YouTube

/*ప్రాజెక్ట్ RFID reader module RC522  (code taken frm https://create.arduino.cc/projecthub/person87/rfid-rc522-sensor-7fc37b  
and modified by vikrambhayyA; the mfrc522 library installation method was seen from the process
given in https://www.instructables.com/RFID-RC522-With-Arduino/)
circuit diagram taken from https://www.youtube.com/watch?v=3uWz7Xmr55c


विक्रम भय्या విక్రమ్ కుమార్ Vikram BhayyA
Science Communicator
vikramkumar.volunteer@gmail.com

8331926163
http://www.linkedin.com/in/विक्रम-విక్రమ్-vikram-कुमार-కుమార్-kumar-85424172


   */

#include <SPI.h>
#include <MFRC522.h>
 
#define SS_PIN 10
#define RST_PIN 9
//#define RED 2
//#define Green 3
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
  Serial.println("bring your card to the reader...");
  Serial.println();
  pinMode(4, OUTPUT);
   pinMode(3, OUTPUT);
   pinMode(5, OUTPUT);
}
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.println("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) == "00 8C 04 1C")// || (content.substring(1) == "21 0B 99 26") )
  //21 0B 99 26   change here the UID of the card/cards that you want to give access
  {
    Serial.println("Authorized access");
    Serial.println();
    digitalWrite(3, HIGH);   // turn the LED on (HIGH is the voltage level)
    delay(2000);
    digitalWrite(3, LOW);
  }
  /*else if (content.substring(1) == "E1 11 52 19")// || (content.substring(1) == "21 0B 99 26") )
  //21 0B 99 26   change here the UID of the card/cards that you want to give access
  {
    Serial.println("Authorized access");
    Serial.println();
    digitalWrite(4, HIGH);   // turn the LED on (HIGH is the voltage level)
    delay(1000);
    digitalWrite(4, LOW);
  }
 */
 else   {
 
    Serial.println(" Access denied");
     digitalWrite(5, HIGH);    // turn the LED off by making the voltage LOW
     delay(1000);
    digitalWrite(5, LOW);
 
  }
}