Arduino Fingerprint Attendance Kit - R307, SD Card, Real-Time Clock
Arduino Biometric Time-Stamped Attendance Kit - Log Fingerprint, Time, Date to SD and Generate Python Reports
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 clocking in with a fingerprint instead of a paper register. This kit lets you build a complete biometric attendance system that stores user IDs with exact timestamps on a microSD card. A Python script then reads the SD card and generates a clean daily attendance report - perfect for classrooms, maker labs, and hackathon projects.
What You'll Build
A standalone fingerprint attendance terminal that registers users, shows feedback on a 16x2 LCD, beeps on successful scan with a buzzer, and logs every entry with date and time to a CSV file on the SD card. The included Python script reads the log and prints or exports a daily attendance sheet.
What You'll Learn
- Interfacing the R307 optical fingerprint sensor with Arduino Uno
- Capturing and storing biometric templates for up to 127 users
- Using the DS3231 RTC module to timestamp data with real-world accuracy
- Writing Python scripts to parse SD card logs and produce tabular attendance reports
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | x1 |
| R307 Fingerprint Sensor | x1 |
| DS3231 RTC | x1 |
| MicroSD Module | x1 |
| 16x2 LCD | x1 |
| I2C Backpack | x1 |
| Active Buzzer | x1 |
| 10k? Resistors | x5 |
| 100nF Caps | x5 |
| 830-pt Breadboard | x1 |
| M-M Wires | x25 |
| 9V Battery Snap | x1 |
Why Buy This Kit Instead of Sourcing Parts Separately
| Factor | Sourcing Separately | Compoden Kit |
|---|---|---|
| Compatibility checks | You verify every part (LCD with I2C, RTC with DS3231, fingerprint module voltage levels) | Pre-tested as a system |
| Build support | Forums and scattered tutorials - no guarantee of matching your exact hardware | AI companion trained on this exact project |
| Time to first working build | Days of debugging wiring, libraries, and SD read errors | 4-5 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 intermediate kit is ideal for CBSE Class 11-12 students building a computer science or electronics project, B.Tech ECE/EEE students prototyping for college labs, and teams at Smart India Hackathon or ATL Tinkering Labs working on security and surveillance solutions. If you have basic Arduino experience and want to move into biometrics with data logging, this kit delivers.
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 inside the box or message us on WhatsApp with your kit code. Our AI companion trained on this project will walk you through wiring and code, and our team will respond within 24 hours.
How many fingerprints can this system store?
The R307 sensor can store up to 127 fingerprint templates in its onboard memory, and the Arduino manages user IDs, so you can have 127 unique users.
Do I need a computer connected for attendance logging?
No, the kit runs standalone on a 9V battery or USB. All attendance entries are stored directly on the microSD card as a CSV file that you can later read on a computer.
Can I modify the Python reporting script?
Absolutely. The Python script is open and customizable; you can extend it to push data to Google Sheets, flag late entries, or integrate with a school database.
R307 fingerprint logs user ID and timestamp to SD. Daily attendance report generated by Python.
What's in this kit
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