Published August 22, 2023 © GPL3+

RFID Shield based Authorization System

The RFID-Based Authorization System for Effortless and Secure Entry Management.

IntermediateFull instructions provided2 hours106

Things used in this project

Hardware components

USB-A to Micro-USB Cable

SB Components ArdiPi - Uno R3 Alternative Board Based on Pico W

SB Components Ardi RFID Shield for Arduino Uno

Software apps and online services

Thonny

Story

In comparison to other systems, the RFID authorization system based on ArdiPi is secure and quick. The use of ArdiPi makes designing much simpler. Just like a plug-and-play device, programme a code and upload it to an ArdiPi. It can be used as a simple access control mechanism and is a low-cost project. Their primary benefit is contactless communication, and RFID tags may operate in a variety of environments. RFID systems are more effective because of this.

System Working

RFID Module

Designed with convenience and security in mind, the Ardi RFID Shield is based on the EM-18 module, operating at a frequency of 125 KHz. This shield allows you to easily integrate RFID (Radio Frequency Identification) technology into your projects, enabling seamless identification and access control systems.

Features of RFID Module

Onboard High-quality relays Relay with Screw terminal and NO/NC interfaces.
Onboard 3 LEDs power, relay ON/OFF State and RFID Scan status.
Multi-tone Buzzer onboard for Audio alerts.
Onboard 125kHz EM18 RFID small, compact module.

For more Technical details visit

ArdiPi

ArdiPi is the ultimate Arduino Uno alternative packed with powerful specs and exciting features in the Arduino Uno form factor. You can enjoy a low-cost solution with access to the largest support communities for Raspberry Pi.ArdiPi variant is powered by Raspberry Pi Pico W which offers wireless connectivity such as WiFi and BLE. Built-in Wi-Fi and Bluetooth connectivity for ArdiPi boards make them ideal for IoT projects or projects requiring wireless communication.

Features of ArdiPi

SD card slot for storage and data transfer.
Arduino UNO Form factor, so you can connect 3.3V compatible Arduino shields.
Drag-and-drop programming using mass storage over USB.
Multifunction GPIO breakout supporting general I/O, UART, I2C, SPI, ADC & PWM functions.
Multi-tune Buzzer to add audio alert into the project.
SWD pins breakout for serial debugging.

For more Technical details visit

Connection Detail

When RFID Shield mounted on ArdiPi

RFIDShield <-> ArdiPi

Transmit Pin <->GP1(Serial Rx of Pico W)

Relay <->GP5

Buzzer <->GP2

Software Setup

Download and install Thonny IDE

How to Run Script

1 / 4 • Step 1 (Click on the lower right corner to configure board )

Now that we've reached this point, you're executing your script through Thonny IDE, so if you unplug Pico, it will stop running. To run your script without using an IDE, simply power up ArdiPi and it should run your script, go to step 3. Once you have transferred your code to the ArdiPi board, to see your script running, just plug in power either way using micro USB or via Vin, both will work.

How to move your script on pico W of ArdiPi

Click on File -> Save Copy -> select Raspberry Pi Pico, Then save file as main.py

1 / 4

In similar way you can add various python code files to Pico.

RFID Shield based Authorization System

from machine import UART, Pin
import time

#Serial communication 
RFID = UART(0,baudrate = 9600,tx = Pin(0),rx = Pin(1))

relay = machine.Pin(5, machine.Pin.OUT) #Define GPIO5 as output connected to relay
buzzer = machine.Pin(2, machine.Pin.OUT) #Define GPIO2 as output connected to buzzer

#initially switch off by setting LOW value
buzzer.value(0)
relay.value(0)

while 1:
    data_Read = RFID.readline(12) #read data bytes comming from RFID Module, 12 Bytes for our card (variable for different card)
    if data_Read is not None: # Enter when RFID card detected 
        print(data_Read)
        data=data_Read.decode("utf-8") # convert raw data into utf-8 format
        print(data)
        if (data == '0B00287A0A53'):
            print("Authorized User")
           
        if(data == '0E0096E96B1A'):
            print("Authorized User")
               
        elif(data == '0796AEDDA745'):
            print("Un Authorized User")
       
       
        relay.value(1) # Switch ON Relay 
        buzzer.value(1) # Switch ON Buzzer 
        time.sleep(0.5)
    time.sleep(0.5)
    buzzer.value(0)
    relay.value(0)

Credits

Paul Golding

2 projects • 2 followers

Maker, Educator, Researcher, Technical writing addicted

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RFID Shield based Authorization System

RFID Shield based Authorization System

Things used in this project

Hardware components

Software apps and online services

Story

RFID Module

Features of RFID Module

ArdiPi

Features of ArdiPi

Connection Detail

Software Setup

How to Run Script

How to move your script on pico W of ArdiPi

Code