ESP32 Triple-Factor Biometric Access Terminal Kit (Fingerprint+RFID+PIN)
ESP32 Triple-Factor Biometric Access Terminal Kit with Cloud Event Logging
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Protect a laboratory, server room, or restricted area with a triple-factor authentication terminal you build yourself. Instead of relying on single-point security, this system demands a valid fingerprint, an authorized RFID tag, and the correct PIN before the solenoid lock releases. Every access event is instantly logged to the cloud over WiFi, giving you a tamper-proof digital trail.
What You'll Build
You'll assemble and program a standalone access controller housed in a sturdy enclosure. The OLED displays real-time status, the RTC timestamps each event, and the microSD stores local backups. When authenticated, the solenoid clicks open; any failed attempt triggers an alert log. You'll have a functional security terminal you can deploy at your office or hostel gate.
What You'll Learn
- Implementing triple-factor authentication logic on ESP32 using C/C++
- Interfacing R307 optical fingerprint sensor and enrolling templates
- Reading and writing MIFARE RFID tags with the MFRC522 module over SPI
- Publishing authenticated real-time event logs to a cloud MQTT broker (e.g., Adafruit IO or AWS IoT)
Kit Contents
| Component | Quantity |
|---|---|
| ESP32 Dev Board | 1 |
| R307 Fingerprint Sensor | 1 |
| MFRC522 RFID | 1 |
| 4x4 Keypad | 1 |
| 5V Solenoid Lock | 1 |
| 5V Relay Module | 1 |
| DS3231 RTC | 1 |
| MicroSD Module | 1 |
| 0.96in OLED | 1 |
| LM2596 Buck Converter | 1 |
| 1N4007 Diode | 5 |
| 10k? Resistors | 10 |
| 100nF Caps | 10 |
| PCB Prototype Board | 3 |
| Enclosure Box | 1 |
| 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
Final-year B.Tech (ECE/EEE/ISE) students building capstone projects on access control, Smart India Hackathon participants prototyping advanced authentication systems, and IoT product developers wanting a ready reference design. Security systems integrators will find a proven blueprint for multi-modal terminals, while makerspaces and ATL Tinkering Labs can use it for advanced workshops.
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 talk to our AI companion, which explains each step, checks your code, and suggests fixes. For additional help, message us on WhatsApp-we respond within hours.
Can I change the authentication sequence or require only one factor?
Yes, the firmware is fully customizable. You can modify the order-for example, fingerprint then PIN-or set the system to accept any single factor by editing a few lines in the provided code.
How do I view the cloud logs remotely?
The ESP32 publishes entries to an MQTT topic; you can subscribe via the Adafruit IO dashboard or any MQTT client to see real-time and historical events. We include a pre-configured script that connects to the cloud in minutes.
Is the solenoid powerful enough for a real door?
The included 5V solenoid works for cabinet locks, drawers, or light gate latches. To secure a main door, you can upgrade to a 12V electromagnetic lock and use the relay module with an external power supply-the wiring remains identical.
Fingerprint + RFID + PIN triple-factor authentication required. All events cloud-logged via ESP32 MQTT over WiFi.
What's in this kit
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.
Other projects you can build
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