General Overview

An online attendance system made using the NodeMCU. The project uses RFID (Radio-Frequency Identification) with indicator lights, to record student attendances. A webpage handles the registration of new RFID tags under the name of the student. A second webpage is used to get the attendance records of the entire student body. The system is secure and has 3 custom “Keys” to ensure there is no access to any third party or false records made by someone with malicious intents.

Summary of Features

1. RFID: modern, fast and accurate system
2. LED Indicators
   • Green LED : Student marked as present successfully
   • Yellow LED : Student already marked as present
   • Red LED : Student not recognized
3. Registered students only
4. Security Keys : Ensure a controlled access
   • Key #1 : For marking attendance of students, possessed by “School Certified” attendance recorders
   • Key #2 : For viewing the attendance record of the entire school body, possessed by school administration
     • For a “key-less” viewing of the attendance record, the student must state it’s registration ID (Personal RFID assigned by administration). This will allow the student to see his own attendance records only
   • Key #3 : For registering new tags, possessed by school administration
5. SQL Server : All records are stored on an SQL server and can hence be modified as the administration wills to

Code Overview

NodeMCU-Code

Server-Code

Circuit Overview

This is the circuit for an Attendance Recorder

The Attendance Recorder

The RFID Tags