Smart Shopping List with RFID

Components Required

• Microcontroller: ESP32 or Arduino
• RFID Reader: MFRC522 or similar
• RFID Tags: Key fobs or cards
• Display: LCD (16x2 or OLED)
• Power Supply: Battery or USB power

Wiring Diagram

Ensure the RFID reader is connected to the microcontroller according to the specifications of the selected board.

Code Implementation

1. Libraries Needed

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

2. Setup and Loop Functions

void setup() {
    Serial.begin(9600);
    SPI.begin();
    mfrc522.PCD_Init();
    lcd.begin(16, 2);
    lcd.print("RFID Shopping List");
}

void loop() {
    // Check for RFID tags and update list
}
            

Functionality

The Smart Shopping List system will allow you to scan RFID tags associated with items you want to add or remove from your shopping list. The LCD will display the current list and allow you to keep track of items needed.

Conclusion

This project combines RFID technology with a display interface to create an interactive shopping list. You can expand its functionality by adding features like cloud storage or mobile notifications.