Arduino Tutorials: RFID Security System with Code | RFID Projects Part 3

In this final part of our RFID Projects series, we code and test a complete RFID-based security system using Arduino Uno, MFRC522, LEDs, and a buzzer. This beginner-friendly tutorial walks you through each line of code and shows how to respond to authorized and unauthorized RFID cards or key fobs. ✅ Authorized Card: Green LED turns ON, and the buzzer gives an approval sound. ❌ Unauthorized Card: Red LED turns ON, and the buzzer gives a warning sound. 📌 In case you missed the previous videos: 🔹 Part 1 - Read RFID Card & Key Fob IDs: 👉 https://youtu.be/btSLFZDlAoc 🔹 Part 2 - Circuit Design in Fritzing: 👉 https://youtu.be/xcmpLx93thM 🚀 What You’ll Learn in This Video: ✔️ How to code an RFID-based security system ✔️ Use of conditional statements to control LEDs and buzzer ✔️ Final testing and demonstration of the RFID system ✔️ Real-time feedback using Serial Monitor This project is perfect for STEM learners, DIY electronics enthusiasts, and beginners in Arduino and RFID. Don’t forget to Like, Subscribe, and hit the 🔔 to stay updated with more Arduino tutorials! ⏱️ Timestamps: 00:48 – Summary of the Previous Section 03:20 – How the RFID Card is Read 06:32 – Defining LEDs and Buzzer for Operation 08:33 – Comparing Authorized Card IDs 10:12 – Function for Authorized Cards 12:36 – Function for Unauthorized Cards 14:18 – Testing the Program #arduinoproject #rfid #arduinoProjects #rfidSecurity #electronicsForBeginners #diyElectronics #arduinoUno #rfidProject #rc522 #mfrc522