Here’s a project that integrates an RFID reader, a servo motor, an LCD, 3 LEDs, and a 2-pin piezo buzzer with Arduino. This setup can be used to create an access control system where the RFID reader ...

Real-time access control using RFID tags. Visual feedback with LEDs: Default LED stays ON to indicate system readiness. Green LED lights up for access granted. Red LED lights up for access denied.

Circuit Diagram to Build a Smart Toll System Using Arduino: Circuit Explanation 1. RFID Reader Connections: The RFID reader communicates with the Arduino via SPI protocol. The following connections ...

Learn to build an RFID based attendance system using Arduino with step-by-step instructions, circuit diagrams, and complete code. This $35 DIY project replaces expensive commercial systems with ...

By connecting multiple MFRC522 RFID readers to an Arduino Uno, she’s come up with a method of triggering a device (like an electronic door lock) only when the appropriate combination of RFID ...

Instructables user talk2bruce created the Arduino Internet Gizmo, a card reader that takes you to your favorite websites with a touch of an RFID tag.