","Download RFID RC522 MFRC522 Arduino Library","","https://www.arduinolibraries.info/libraries/mfrc522","![RFID-RC522](https://3.bp.blogspot.com/-LIRYnr98scs ...

RFID Module: Reads the UID from an RFID tag/card. If the UID matches the authorized UID, access is granted. Ensure the RFID tag/card UID matches the authorized UID in the code. Use the potentiometer ...

In this tutorial we will learn how to use the RC522 RFID module. We will understand the simple overview of the specifications and demonstrate a project example of the Arduino RC522 RFID card reader ...

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 ...

In this tutorial, we will learn how to interface the RC522 RFID reader with the Arduino and use the MIFARE classic 1K RFID card and key-chain. RFID stands for Radio-Frequency Identification. RFID uses ...

Cherie is a Creative Technologist who joined MUO in 2021. She's an avid maker and technical writer, with experience using Raspberry Pi, Arduino, Micro:bit, ATtiny, and ATMega devices as well as ...

I tap my phone to a screen to enter the metro station. I tap a card to open a locked door. What is the technology behind this? To get a better understanding, I did some hands-on learning with some ...