This document provides step-by-step instructions to run the RFID Attendance program using an Arduino Uno board and the Arduino IDE. Go to Tools > Board > Arduino Uno Go to Tools > Port and select the ...

Project Description A secure door lock system using Arduino Uno, RFID (MFRC522), and a 4x4 Matrix Keypad. Authorized users can unlock the door with either an RFID tag or a PIN code. Features 🔒 Dual ...