Arduino RFID technology works by using electromagnetic waves in the radio frequency spectrum for wireless communication and data transfer between RFID tags and readers. From supermarket anti-theft ...

Lesson 21 – RC522 RFID Module YouTube video RC522 RFID Module. Demonstrate the Elegoo sketch provided in the tutorial covering the RFID Module and expand the sketch to include a Master and User Tag ...

RFID Module: Reads the UID from an RFID tag/card. If the UID matches the authorized UID, access is granted. This project is open-source and can be freely used for educational purposes. I demonstrate ...

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 ...