Encrypted RFID Car Immobiliser Kit with Arduino Uno + Relay
Build an Encrypted RFID Car Immobiliser with Arduino Uno — Full Project Kit
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 starting your car only when an authorised, AES-encrypted MIFARE card is presented. This kit transforms your Arduino Uno into a robust vehicle immobiliser — a real-world anti-theft system that blocks the starter relay unless the cryptographic hash matches. Perfect for B.Tech students tackling automotive security, Smart India Hackathon participants, or any maker serious about embedded encryption.
What You'll Build
A functioning encrypted RFID car immobiliser circuit that controls a relay to enable or disable the vehicle starter motor. You'll mount the MFRC522 reader discreetly, program AES verification on the Arduino, and interface a relay to the ignition line. The system responds only to pre-encrypted MIFARE cards stored in EEPROM, flashing an LED and sounding a buzzer to indicate access.
What You'll Learn
- Implement AES-128 encryption on Arduino for secure RFID authentication, leveraging the mbed TLS library
- Interface the MFRC522 reader with MIFARE Classic cards and read/write encrypted data sectors
- Control high-current automotive relays safely using diodes, snubber circuits, and proper isolation
- Integrate visual and audible feedback (LED patterns, buzzer) to signal authentication status and system health
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| MFRC522 RFID | 1 |
| MIFARE Cards | 5 |
| 5V Relay Module | 1 |
| 5mm LED | 2 |
| Active Buzzer | 1 |
| 1N4007 Diode | 5 |
| 10kΩ Resistors | 5 |
| 100nF Caps | 5 |
| PCB Prototype Board | 2 |
| 12V Adapter | 1 |
| Soldering Iron | 1 |
| Solder Wire | 1 |
Why Buy This Kit Instead of Sourcing Parts Separately
| Factor | Sourcing Separately | Compoden Kit |
|---|---|---|
| Compatibility checks | You verify every part | Pre-tested as a system |
| Build support | Forums and scattered tutorials | AI companion trained on this exact project |
| Time to first working build | Days of debugging | Hours, with step-by-step guidance |
| Shipping coordination | Multiple sellers, multiple delays | One shipment from Bengaluru in 3-5 days |
Who This Kit Is For
This advanced kit is designed for B.Tech ECE/EEE students building final-year projects on automotive security, participants in Smart India Hackathon tackling hardware challenges, and ATL mentors guiding advanced tinkering sessions. If you're familiar with Arduino programming and basic soldering, you'll gain hands-on experience in encryption and real-world circuit integration. Also ideal for automotive hobbyists prototyping custom immobilisers for older vehicles.
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.
What if I get stuck during the build?
Scan the QR code on the box to access the AI build companion trained on this exact kit; it answers questions specific to your project. For further help, reach us on WhatsApp — we typically reply within an hour.
Can I adapt this immobiliser to my actual car?
Yes, once you understand the relay wiring, you can connect it to the starter solenoid circuit. Always use a fuse and test with a multimeter first. The kit simulates the system on a breadboard; real vehicle deployment requires automotive-grade relays and safety precautions.
How does the AES encryption protect against RFID cloning?
The Arduino verifies a cryptographic hash stored on the MIFARE card's secure sector, not just the UID. Even if someone copies the card's serial number, the hash will fail verification, keeping your vehicle safe.
Do I need prior experience with encryption algorithms?
Basic Arduino programming knowledge is sufficient. The AI companion provides the AES library implementation step-by-step, and you'll learn how to integrate it without deep cryptography theory.
MFRC522 reads AES card. Arduino checks hash and controls relay immobilising starter circuit.
What's in this kit
- Arduino Uno R3
- MFRC522 RFID
- MIFARE Cards x5
- 5V Relay Module
- 5mm LED x2
- Active Buzzer
- 1N4007 Diode x5
- 10kΩ Resistors x5
- 100nF Caps x5
- PCB Prototype Board x2
- 12V Adapter
- Soldering Iron
- Solder Wire
Choose your assembly option:
- Soldering Kit — 25W soldering iron, 60/40 solder wire, flux, and small perfboard for permanent assembly.
- Breadboard Combo — 800-point full-size breadboard with 65-piece jumper wire pack for solderless prototyping.
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items