4 White Compatible RFID NFC 13.56MHz Writable Memory 8kbit Cards

Description

What it is

The white RFID NFC 13.56MHz card is a module suitable for electronic projects requiring data read and write via RFID technology.

Features

• Compatible with RFID NFC at 13.56MHz
• White card
• Writeable memory 8kbit

What it is for

Ideally used for security and automation projects, it can be integrated into RFID-based access systems or used to interact with devices. Compatible with Arduino and other microcontrollers.

Tutorial: How to use RFID NFC cards (ARD00417)

Use RFID cards to control access or interact with devices. Ideal for security and automation projects.

What you need

• Arduino UNO
• USB A-MicroB cable
• RFID antenna

Steps

1. Connect the RFID antenna to the Arduino.
2. Install the ‘MFRC522’ library.
3. Load the example sketch provided by Arduino IDE.
4. Check the connection with an RFID reader or an NFC card.
5. Modify the sketch to read data from the card.
6. Write new data to the card using the Arduino.

Example code

MFRC522 mfrc522(rstPin, csPin); // Inizializza il modulo
if (!mfrc522.PICC_IsNewCardPresent()) return;
if (mfrc522.MFRC522::PICC_ReadBlock(4, buffer)) {
  Serial.print("UID:");
  for (byte i = 0; i < mfrc522.uid.size; i++) {
    Serial.print(mfrc522.uid.uidByte[i] < 0x10 ? "0" : "/");
    Serial.print(mfrc522.uid.uidByte[i], HEX);
  }
}

Mini project

Create an RFID-based access system for your room or office.

Common mistakes

• Error in RFID chip identification.
• Obstacle in writing data to the card.
• Issues with the card’s power supply.
• Incorrect RFID antenna configuration.

Recommended accessories

• RFID Antenna
• Arduino UNO R3
• USB A-MicroB cable
• NFC Card Reader

Frequently asked questions

How can I read data from the card?
Use the MFRC522 library to read memory blocks.

What is the write limit on the card?
Check the RFID module datasheet.