Arduino Project #1: RFID Door Access Control System with I2C LCD

Описание: Welcome to the first major project in our Arduino Tutorial Series! In this video, we integrate the components from our previous lessons to build a Smart RFID Door Access Control System.

This project demonstrates how to create a security logic that distinguishes between authorized and unauthorized users. When a registered RFID card is scanned, the system validates the Unique ID (UID) and displays "ACCESS GRANTED" on the I2C LCD. If an unknown card is used, it triggers an "ACCESS DENIED" warning. This project serves as the essential "brain" for any electronic locking system.

Key Learning Objectives:

1. Integrating SPI (RFID) and I2C (LCD) protocols in a single sketch.
2. Implementing UID validation logic using the memcmp function.
3. Managing real-time visual feedback on a 16x2 Display.
4. Structuring a multi-component Arduino project.

⏪ Prerequisites (Previous Lessons):

Video #5: Interfacing I2C 16x2 LCD with Arduino
🔗    • 5. Interfacing I2C LCD with Arduino: Only ...  

Video #6: Interfacing RC522 RFID with Arduino
🔗    • 6. How to Interface RC522 RFID with Arduino  

📁 Project Resources:

Source Code and complete tutorial: will be updated soon.

Full Arduino Playlist:    • Arduino Tutorial (Hindi)  

Components List:

1. Arduino Uno or Nano
2. RC522 RFID Reader/Writer
3. 16x2 LCD with I2C Backpack
4. Breadboard and Jumper Wires

If you find this project helpful, please Like the video and Subscribe for more tutorials. In the next part of this series, we will expand this project by adding a relay to control a physical door lock!

#arduino #rfid #i2c #electronics #diyprojects #securitysystems #rc522 #microcontroller #coding #engineering