RFID Access Control Kit

Overview

This DIY project builds an RFID access-control system. An Arduino Nano reads RFID cards and tags with an RC522 reader and decides whether access is granted.

How It Works

1. The RC522 module reads the unique ID of a card or tag placed near it.
2. The Arduino Nano compares the ID against the stored authorised IDs.
3. The result (access granted or denied) is reported so you can trigger a lock, light or alert.

Complete Parts List

You Will Also Need

A USB-A to USB-C cable to connect the Arduino Nano C-Type to your computer and upload code — not included in this kit.

Applications

• Office and lab entry - card-based access for rooms
• Attendance systems - identify people with tags
• RFID learning - understand SPI communication with an RFID reader

Full Build Guide

Step-by-step instructions and code for this exact project are on Project Hub.

FAQ

Do I need coding experience? No prior experience is required - this kit is built around one specific project, and the full code is freely available. See the build guide above.

What tools do I need beyond what's included? A computer with the free Arduino IDE (or ESP8266 board support, where applicable) installed to upload the code. No soldering is required for this build. You'll also need a USB-A to USB-C cable to connect the board — not included.

Can I reuse the parts afterward? Yes - every component in this kit is a standard, reusable part you can use in future projects, not a single-use kit.