RFID-Based Access Control using NodeMCU

This project implements an RFID-based access control system using NodeMCU (ESP8266) microcontroller, allowing you to control access to secure areas using RFID cards/tags.

Table of Contents

1. Overview
2. Prerequisites
3. Hardware Setup
4. Web Interface
5. NodeMCU - RC522 Connection
6. Node.js API Setup
7. Usage
8. License

Overview

This project aims to provide a cost-effective and customizable solution for access control using RFID technology. It combines the power of NodeMCU with the RC522 RFID module to securely manage access to a designated area.

Prerequisites

• Basic knowledge of Arduino programming.
• Familiarity with NodeMCU and the Arduino IDE.
• RC522 RFID module.
• Access to the Arduino IDE and a compatible USB cable for NodeMCU.

Hardware Setup

Follow these steps to set up the hardware:

1. Connections: Connect the components as shown in the following Fritzing diagram:

2. Assembly: Assemble the components into the access control system, ensuring proper connections and power supply.

Web Interface

The web interface allows you to configure authorized RFID cards/tags and view access logs. Here's a preview:

NodeMCU - RC522 Connection

The table below shows the pin connections between NodeMCU and the RC522 RFID module:

NodeMCU	RFID-RC522
D4	SDA
D5	SCK
D7	MOSI
D6	MISO
NOT CONN	IRQ
GND	GND
D3	RST
3V	3.3V

Node.js API Setup

1. Clone the repository to your local machine.
2. Navigate to the "API" folder.
3. Install the required npm packages by running npm install in the "API" folder.
4. Edit the "index.js" file to configure your MySQL connection.
5. Create a MySQL database and two tables using the following queries:

CREATE DATABASE mydatabase;

USE mydatabase;

CREATE TABLE rifds (
  id varchar(100)
);

CREATE TABLE usedata (
  id varchar(100),
  datetime varchar(100)
);

Start the Node.js API by running node index.js in the "API" folder.

Usage

1. Upload the Arduino code to the NodeMCU using the Arduino IDE.
2. Configure the system using the web-based interface as explained above.
3. Connect the RFID reader and electronic lock/gate to the NodeMCU as outlined.
4. Start managing access to your secure area!

License

This project is licensed under the MIT License.