RFID Based Attendance System with Servo and ThingSpeak

This project demonstrates an RFID-based attendance system using the ESP8266 microcontroller. The system records attendance and opens a servo-controlled door for authorized individuals. Attendance data is uploaded to ThingSpeak, an IoT platform.

Features

• RFID Scanning: Scans RFID tags to authenticate users.
• Servo Motor: Controls a door lock mechanism.
• Buzzer: Emits a sound when a user scans their RFID card.
• LCD Display: Displays user information (Name and Roll Number).
• ThingSpeak Integration: Sends attendance data to ThingSpeak for remote monitoring.

Hardware Requirements

• ESP8266 (e.g., NodeMCU, Wemos D1 Mini)
• RFID Reader (MFRC522 or compatible)
• Servo Motor (for door control)
• Buzzer
• LCD 16x2 with I2C
• Wires and Breadboard

Software Requirements

• Arduino IDE: Ensure that you have the ESP8266 board manager installed.
• Libraries:
  • ESP8266WiFi
  • ThingSpeak
  • SoftwareSerial
  • LiquidCrystal_I2C
  • Servo

Pin Mapping

• D7: RFID Reader (RX)
• D8: RFID Reader (TX)
• D5: Buzzer
• D6: Servo Motor
• D1: SCL (I2C for LCD)
• D2: SDA (I2C for LCD)

Code Explanation

Key Sections:

• WiFi Setup: Connects to your Wi-Fi network.
• RFID Scanning: Reads the RFID tag when scanned and checks against predefined tag IDs.
• Servo Control: Opens and closes the door (servo motor).
• ThingSpeak: Sends attendance data (Name and Roll Number) to your ThingSpeak channel.
• LCD Display: Shows the user information and status.