Build an RFID Door Lock: Complete Kit with Arduino Uno & Relay

Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.

Imagine a door that opens only when you tap the right card. This kit lets you build that exact system — a practical RFID access controller that many Indian homes and apartments already use. Your child will wire up an Arduino Uno, an MFRC522 RFID reader, LEDs, and a buzzer to create a real working smart lock prototype. It’s security, coding, and electronics all packed into one afternoon project.

What You'll Build

A functional RFID-controlled access system that mimics everyday keycard entries. When an authorized RFID card is scanned, the green LED lights up and the relay activates to unlock a door — just like a hotel or metro gate. An unauthorized card triggers a red LED and a buzzer alert, teaching the basics of authentication and access logic. The entire circuit stays neatly on a breadboard, with code you upload yourself.

What You'll Learn

• How RFID tags and readers communicate wirelessly at 13.56 MHz
• Wiring an MFRC522 module to an Arduino Uno and reading UID data
• Coding conditional logic in Arduino C — if authorized, unlock; else, sound the alarm and light the red LED
• Driving a relay safely to control high‑power external devices like a solenoid lock

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Young makers in ATL Tinkering Labs, students in CBSE Classes 5-10 building science projects, and early B.Tech ECE/EEE first‑year workshop sessions will all find this kit immediately useful. It’s also a perfect hands‑on activity for Smart India Hackathon junior tracks or weekend experimenting at home. If you’re introducing IoT or security concepts to a curious mind, this kit gives them a real, working model in an afternoon.

Built and Backed by Compoden

Every Compoden kit ships with an AI build companion trained on this exact project — accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.