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RFID-based attendance tracking and door unlock system. RC522 reader, Arduino, servo latch, and I2C LCD display. Logs attendance to Serial monitor and unlocks door on authorised card.
Specifications
| Microcontroller | Arduino Uno |
| RFID Module | RC522 (13.56 MHz, SPI) |
| Lock Mechanism | SG90 Servo Motor Latch |
| Tags | 2× RFID Cards + 2× RFID Key Fobs |
| Display | 16×2 I2C LCD |
| Storage | EEPROM for authorised UIDs |