The use of Radio Frequency IDentification (RFID) technologies is growing. Many different applications are implemented in various sectors, and used for very different purposes. RFID enables wireless ...

Serial entrepreneur Patrick Thomas Mitchell has once again taken to Kickstarter to launch his 33rd campaign allowing electronic enthusiasts to back a small yet fast RFID reader. The card reader can be ...

I just received my RC522 RFID reader and made this simple Arduino access control system that uses the reader, a buzzer for the alarm and a relay shield for the security system. The relay can be used ...

Arduino is one of those boards that has become synonymous with hacking and making. Since its introduction in 2005, over 700,000 official Arduino boards have been sold, along with untold millions of ...

So you finally decided to hop on the Arduino bandwagon and start making electronic projects as a fun hobby. As a beginner getting started with Arduino, your first instinct is typically to buy a ...

// This is the UID of the master card that will be granted access. // Replace it with the UID of your card.

#include <MFRC522.h> // Sử dụng thư viện MFRC522 để đọc thẻ RFID #include <LiquidCrystal_I2C.h> // Sử dụng thư viện LiquidCrystal_I2C để điều khiển màn hình LCD qua giao tiếp I2C #include <Keypad.h> / ...