https://github.com/bernoussama/arduino-rfid

arduino rfid access control system
https://github.com/bernoussama/arduino-rfid

arduino cpp iot

Last synced: 5 months ago
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arduino rfid access control system

• Host: GitHub
• URL: https://github.com/bernoussama/arduino-rfid
• Owner: bernoussama
• License: mit
• Created: 2023-08-16T09:15:03.000Z (almost 3 years ago)
• Default Branch: master
• Last Pushed: 2025-08-14T13:23:28.000Z (11 months ago)
• Last Synced: 2026-02-08T06:17:41.671Z (5 months ago)
• Topics: arduino, cpp, iot
• Language: C++
• Homepage:
• Size: 1000 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# Arduino RFID Access Control System

A simple and effective RFID-based access control system built with Arduino.

## Features

- Reads RFID cards using an [MFRC522](https://www.electronicwings.com/nodemcu/mfrc522-rfid-reader-interfacing-with-nodemcu) reader

- Controls door lock/relay based on authorized cards

- Stores authorized RFID tags in code (or EEPROM)

- Serial output for logging access attempts

- Easy to modify and expand for your needs

## Hardware Requirements

- Arduino Nano (or compatible board)

- MFRC522 RFID Reader

- RFID Cards or Keyfobs

- Relay Module (for controlling a door lock)

- Jumper wires, breadboard, power supply

## Wiring

| MFRC522 Pin | Arduino Pin |

|-------------|-------------|

| SDA         | D10         |

| SCK         | D13         |

| MOSI        | D11         |

| MISO        | D12         |

| IRQ         | Not used    |

| GND         | GND         |

| RST         | D9          |

| 3.3V        | 3.3V        |

Relay module should be connected to a digital output pin (e.g., D8).

## Software Setup

1. **Clone this repository:**

   ```sh

   git clone https://github.com/bernoussama/arduino-rfid.git

   ```

2. **Install required libraries:**

   - [MFRC522](https://github.com/miguelbalboa/rfid)

   In Arduino IDE:  

   `Sketch` > `Include Library` > `Manage Libraries` > Search for `MFRC522` and install.

3. **Open the project in Arduino IDE and upload to your board.**

4. **Modify the list of authorized RFID tags in the code as needed.**

## Usage

- Power the system.

- Scan an RFID card/tag.

- If authorized, the relay activates (unlocking the door).

- Unauthorized cards trigger a rejection.

## Customization

- Change pins or add new functionality in the code (`.ino` file).

- Expand with LCD, buzzer, or WiFi for logging and notifications.

## Credits

- [MFRC522 by miguelbalboa](https://github.com/miguelbalboa/rfid)

- Inspired by open-source RFID access projects

## License

[MIT](LICENSE)