Smart Parking System
Slot occupancy detection with a live free-space count, an automatic entry barrier and a display board.
- Suitable for
- Higher Secondary
- Technology
- Arduino Mega
Intermediate6–7 days
Arduino · Access & Identification
RFID Based Attendance System
Card-tap attendance logging with a real-time clock, local record storage and an exportable attendance sheet.
- Difficulty
- Intermediate
- Typical time
- 5–7 days
- Suitable for
- Higher Secondary
Price
Contact for price
Cost depends on components, complexity and which deliverables you need, so we quote after understanding your requirement.
Technologies
- Arduino Uno
- RC522 RFID at 13.56 MHz
- DS3231 real-time clock
- SD card logging
Project overview
Each student carries an RFID card or tag. Tapping it on the reader looks the UID up against a registered list, stamps the current time from a real-time clock module and writes the record to an SD card as a CSV file you can open in a spreadsheet.
The design decision worth understanding is why the clock is a separate module rather than software timekeeping. An Arduino loses the time on every reset, and an attendance system that forgets what day it is fails the first question an examiner asks. The DS3231 keeps running on its own coin cell.
Duplicate taps within a configurable window are ignored, so a student tapping twice does not create two entries — another small piece of real-world handling that is quick to demonstrate and easy to defend.
Features
- Card and tag registration with named entries
- Time-stamped attendance records from a battery-backed real-time clock
- CSV log on an SD card, openable in any spreadsheet
- Duplicate-tap suppression within a configurable window
- Accepted and rejected feedback on the LCD, LED and buzzer
How it works
- 1The RC522 reader continuously polls for a card in its field.
- 2When a card is presented, its unique UID is read over SPI.
- 3The UID is matched against the registered list held in the sketch.
- 4On a match, the current timestamp is read from the DS3231 and a record is appended to the CSV file on the SD card.
- 5The LCD confirms the name and time; an unregistered card produces a rejection tone instead.
Components used
- Arduino Uno
- RC522 RFID reader module
- RFID cards and key tags
- DS3231 real-time clock module
- Micro SD card module and card
- 16x2 I2C LCD
- Buzzer and status LEDs
Questions about this project
How many cards can it hold?
The registered list in the sketch comfortably handles a class-sized group for a demonstration. If you need a larger roll, the list can be moved to the SD card — tell us before we start.
Does the attendance survive a power cut?
Yes. Records are written to the SD card as they happen, and the real-time clock keeps running on its own coin cell.
Similar work
Similar projects
Related builds that use the same technologies or suit the same students.
College Management System
A role-based web application covering students, faculty, courses, attendance, marks and reporting.
- Suitable for
- Diploma
- Technology
- PHP
Intermediate10–14 days
IoT Home Automation
Appliance control from a phone over Wi-Fi, with physical switches that keep working and live status feedback.
- Suitable for
- Diploma
- Technology
- ESP32
Intermediate6–8 days
Need the RFID Based Attendance System in Surat?
Send your class or course and your submission date and we'll confirm what's achievable, what it includes and what it costs — before you commit.