Smart Safe with Data Log
Arduino Smart Safe: Dual Fingerprint & PIN Authentication with Data Log
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Turn your room into a personal vault. This kit lets you construct a working safe that unlocks only when you present a registered fingerprint AND enter the correct PIN — every access attempt, successful or not, is logged to an SD card with precise timestamps. It’s a complete embedded security system that mirrors real‑world biometric access panels.
What You'll Build
You’ll assemble a lockbox mechanism with a servo‑controlled latch, integrate a high‑precision R307 fingerprint sensor and a 4x4 keypad for dual authentication, and program an Arduino Mega to log every interaction on a microSD card. The 0.96‑inch OLED displays real‑time status, while the active buzzer sounds on unauthorized access. The result is a portable, mountable security module that can secure any physical container you choose.
What You'll Learn
- Integrate an R307 fingerprint sensor with Arduino and handle enrollment, matching, and template storage
- Design a dual‑factor access control flow using keypad input and biometric verification
- Implement real‑time data logging with DS3231 RTC timestamps stored on a microSD card
- Interface an OLED display for user feedback and debug sensor data, and control servo actuation
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Mega 2560 | 1 |
| R307 Fingerprint Sensor | 1 |
| 4x4 Keypad | 1 |
| SG90 Servo | 1 |
| DS3231 RTC | 1 |
| MicroSD Module | 1 |
| 0.96in OLED | 1 |
| Active Buzzer | 1 |
| 10kΩ Resistors | 10 |
| 100nF Caps | 10 |
| PCB Prototype Board | 2 |
| 9V Battery Snap | 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
Engineered for B.Tech ECE/EEE students tackling final‑year projects in embedded security, participants of Smart India Hackathon working on surveillance challenges, and hobbyists from IIT/NIT/VIT/BITS who want a production‑grade biometric system. The dual authentication and logging make it ideal for innovation labs, cybersecurity demos, and advanced DIY workshops where real‑world audit trails matter.
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?
Our AI companion, accessed via QR code, walks you through each step, and you can reach us on WhatsApp for human backup.
Can I mount this on any container?
Yes, the servo mechanism can be adapted to any box with a latch; we recommend a robust wooden or metal enclosure for realism.
How do I enroll fingerprints?
The AI companion guides you through a two‑step enrollment process: storing fingerprint templates in the R307 sensor’s flash memory, then verifying with the keypad PIN you set.
Does it record who accessed and when?
Every attempt is logged to the microSD with the RTC timestamp, attempt count, and success/failure status, creating a full audit trail.
Fingerprint + PIN dual auth unlocks servo door. All access attempts logged to SD with RTC timestamp and attempt count.
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.
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