Published February 5, 2024

RFID Base Door Lock System Using Arduino

In this Article, we learn about how to make RFID Base Door Lock System Using Arduino.

ExpertFull instructions provided4 hours268

Things used in this project

Hardware components

Arduino Nano R3

SparkFun RFID Reader Breakout

ControlEverything.com 1-Channel Signal Relay 1A SPDT I²C Mini Module

Solenoid Valve, 2 Way

Digilent 60W PCIe 12V 5A Power Supply

Jumper wires (generic)

Software apps and online services

Arduino IDE

Hand tools and fabrication machines

Soldering iron (generic)

Solder Wire, Lead Free

PCB Holder, Soldering Iron

Wire Stripper & Cutter, 32-20 AWG / 0.05-0.5mm² Solid & Stranded Wires

Story

RFID Base Door Lock System Using Arduino

In this Article, we learn about how to make RFID Base Door Lock System Using Arduino.

In the Last post, we learned about how to Interface JSN-SR04T Waterproof Ultrasonic Sensor with Arduino.

Let’s dive into

Components Require:

1. Arduino Nano

2. 5v DC supply

3. 12v DC Supply

4. Relay

5. Solenoid Door Lock

6. RFID (RC 522)

7. Jumper Wires

How it works:

An RFID-based door lock system using Arduino works by utilizing radio-frequency identification (RFID) technology to control access to a door.

The RFID reader module is connected to the Arduino board. The Arduino sketch initializes the RFID reader, setting up communication and defining the pins used for RX and TX. RFID tags or cards are programmed with unique identification information. This information is stored in the memory of the RFID tags. In the Arduino code, a specific RFID tag ID is defined as authorized. This means that access will be granted to individuals carrying RFID tags with these specific IDs.

If the received RFID tag ID matches the authorized ID(s), the Arduino takes action to unlock the door. If the ID does not match any authorized IDs, the system denies access, and a message is usually sent to indicate unauthorized entry. Upon successful verification of the RFID tag, the Arduino activates a mechanism to unlock the door.

Usages:

The RFID-based door lock system using Arduino finds applications in various scenarios where controlled access is required. Some common usages include:

1. Home Security

2. Office Access Control

3. Hotel Room Access

4. Educational Institutions

5. Laboratories and Research Facilities

VideoTutorial:

RFID Base Door Lock System Using Arduino

Code

Untitled file

#include <SPI.h>
#include <MFRC522.h>
#include <LiquidCrystal.h>

#define RST_PIN     9
#define SS_PIN      10

MFRC522 mfrc522(SS_PIN, RST_PIN);   // Create MFRC522 instance
const int relayPin = 8;
const int buzzerPin = A0;
void setup() {
  Serial.begin(9600);
  SPI.begin();      // Initiate SPI bus
  mfrc522.PCD_Init();   // Initiate MFRC52
 pinMode(relayPin, OUTPUT);
  pinMode(buzzerPin, OUTPUT);
digitalWrite(relayPin, HIGH);  // Activate relay

delay(2000);
}

void loop() {
  if (mfrc522.PICC_IsNewCardPresent() && mfrc522.PICC_ReadCardSerial()) {
    String cardUID = "";
    for (byte i = 0; i < mfrc522.uid.size; i++) {
      cardUID.concat(String(mfrc522.uid.uidByte[i] < 0x10 ? "0" : ""));
      cardUID.concat(String(mfrc522.uid.uidByte[i], HEX));
    }
    cardUID.toUpperCase();
    if (isValidCard(cardUID)) {  
      digitalWrite(relayPin, LOW);  // Deactivate relay
      delay(10000);  // Keep the relay active for 2 seconds
      digitalWrite(relayPin, HIGH);  // Activate relay
    } else { 
      digitalWrite(buzzerPin, HIGH);  // Activate buzzer
      delay(2000);  // Keep the buzzer active for 2 seconds
      digitalWrite(buzzerPin, LOW);  // Deactivate buzzer
    }
    delay(1000);  // Delay to prevent multiple reads
  }
}

bool isValidCard(String cardUID) {
  // Replace with the UID of your valid RFID cards
  String validCard1 = "43884203";
  String validCard2 = "90467989";

  return (cardUID == validCard1 || cardUID ==validCard2);
}

Credits

JACK

21 projects • 2 followers

RFID Base Door Lock System Using Arduino

Things used in this project

Hardware components

Software apps and online services

Hand tools and fabrication machines

Story

RFID Base Door Lock System Using Arduino

Components Require:

How it works:

Usages:

Schematics

rfid_door_lock_diagram_KUYOOdZeh0.jpg

Code

Untitled file

Credits

JACK

Comments

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RFID Base Door Lock System Using Arduino

RFID Base Door Lock System Using Arduino

Things used in this project

Hardware components

Software apps and online services

Hand tools and fabrication machines

Story

RFID Base Door Lock System Using Arduino

Components Require:

How it works:

Usages:

Schematics

rfid_door_lock_diagram_KUYOOdZeh0.jpg

Code

Untitled file

Credits

JACK

Comments

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