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 ...

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 ...

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.

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 ...

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 ...

Winner: Lock Your Drawer With an Arduino and RFID Blake is in the midst of a home automation project. Needing a way to keep his 2-year-old out of his desk drawer full of electronic parts, Blake ...

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.