Controlling access with an RFID card

In this section, we will see how to control access via a door. In the last chapter, we saw how to control the lock and the lamps of a house. This project can complement the last one as it will enable you to control the opening of a door, a specific bedroom door, or lights in other rooms.

Hardware requirements

For this project, we need the following equipment:

• Reading TAGS cards

• RFID RC522 Module

• Arduino Board

The following image shows the RFID tags for reading and controlling the access:

The following figure, shows the RFID card interface for Arduino:

Software requirements

We need to install the <MFRC522.h> library, this file can communicate with and configure the module for reading the tag cards. This library can be downloaded from https://github.com/miguelbalboa/rfid.

Software code

You can now either copy the code inside a file called RFID.ino, or just get the complete code from the folder for this project:

#include <MFRC522.h> 
#include <SPI...