Introduction

This experiment demonstrates how to track RFID tags using an Arduino and RFID reader to monitor objects.

Components Needed

• RFID Reader (e.g., RC522)
• RFID Tags
• Arduino
• Jumper Wires

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Circuit Setup

1. Connect the RFID reader to the Arduino using the SPI interface (MISO, MOSI, SCK, and SDA pins).

Code for RFID Tag Tracking

Upload the following code to your Arduino to track RFID tags:

#include 
#include 

#define SS_PIN 10
#define RST_PIN 9

MFRC522 rfid(SS_PIN, RST_PIN);

void setup() {
  Serial.begin(9600);
  SPI.begin();
  rfid.PCD_Init();
}

void loop() {
  if (rfid.PICC_IsNewCardPresent()) {
    if (rfid.PICC_ReadCardSerial()) {
      Serial.print("RFID Tag UID: ");
      for (byte i = 0; i < rfid.uid.size; i++) {
        Serial.print(rfid.uid.uidByte[i], HEX);
      }
      Serial.println();
    }
  }
}
            

Explanation

The RFID reader communicates with the Arduino to detect and read the unique UID of each RFID tag and outputs it to the Serial Monitor.

Troubleshooting

• Ensure the RFID tags are in range of the reader.
• Check the wiring connections for the SPI interface.