Arduino Project

Arduino RFID Music Player with DFPlayer Mini

Kit purchase

Looking for parts? Check out our all-in-one kits below — packed with components, beginner-friendly guides, and tons of fun.

2.webp__PID:7d088a16-8752-49fb-8b1f-f9bba7297987

Name	Includes Arduino board	PURCHASE LINK
Elite Explorer Kit	Arduino Uno R4 WiFi	BUY
Inventor Lab Kit	Arduino Uno R3	BUY

Course Introduction

In this lesson, we’ll build a Jukebox using an MFRC522 module, an LED strip, and a passive buzzer.

First we’ll write track data to an RFID card, then scanning it will trigger music playback and lighting effects.

Note

If this is your first time working with an Arduino project, we recommend downloading and reviewing the basic materials first.

1.1 Install Arduino IDE(Important)
1.2 Introduction of Arduino IDE

Required Components

In this project, we need the following components:

SN	COMPONENT INTRODUCTION	QUANTITY	PURCHASE LINK
1	Arduino UNO R4 Minima/Arduino UNO R4 WIFI	1	BUY
2	USB Type-C cable	1	×
3	Breadboard	1	BUY
4	Wires	Several	BUY
5	Passive Buzzer	1	BUY
6	MFRC522 Module	1	BUY
7	Power Supply Module	1	BUY
8	LED Strip	1	BUY

Wiring

2.webp__PID:567ef822-4504-4879-b453-4d5f3bb2113f

Common Connections:

MFRC522 Module
SDA: Connect to 10 on the Arduino.
SCK: Connect to 13 on the Arduino.
MOSI: Connect to 11 on the Arduino.
MISO: Connect to 12 on the Arduino.
GND: Connect to breadboard’s negative power bus.
RST: Connect to 9 on the Arduino.
3.3V: Connect to breadboard’s passive power bus.

Passive Buzzer
＋: Connect to 6 on the Arduino.
－: Connect to breadboard’s negative power bus.

LED Strip
Din: Connect to 3 on the Arduino.
GND: Connect to breadboard’s negative power bus.
+5V: Connect to breadboard’s passive power bus.

Writing the Code

Note
You can copy this code into Arduino IDE.
To install the library, use the Arduino Library Manager and search for FastLED and install it.
To install the library, use the Arduino Library Manager and search for MFRC522 and install it.
Don’t forget to select the board(Arduino UNO R4 Minima) and the correct port before clicking the Upload button.

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

#define SS_PIN  10   // SDA (SS) pin for RFID module
#define RST_PIN 9    // RST pin for RFID module

MFRC522 rfid(SS_PIN, RST_PIN);  // Create RFID reader instance

void setup() {
  Serial.begin(9600);   // Initialize serial communication
  SPI.begin();          // Initialize SPI bus
  rfid.PCD_Init();      // Initialize MFRC522 module
  Serial.println("Place your RFID card near the reader to write a melody...");
}

void loop() {
  if (!rfid.PICC_IsNewCardPresent() || !rfid.PICC_ReadCardSerial()) {
    return;
  }

  // ==== Write data block ====

  // Melody 1: Custom melody example (can be replaced)
  // byte dataBlock[16] = {'C','D','E','F','G','A','B',' ',
  //                       'B','A','G','F','E','D','C'};

  // Melody 2: Ode to Joy (commented out)
  byte dataBlock[16] = {'E','E','F','G','G','F','E','D',
                        'C','C','D','E','E','D','D'};

  // ==== End of melody selection ====

  byte block = 4;

  MFRC522::MIFARE_Key key;
  for (byte i = 0; i < 6; i++) {
    key.keyByte[i] = 0xFF;
  }

  MFRC522::StatusCode status = rfid.PCD_Authenticate(
    MFRC522::PICC_CMD_MF_AUTH_KEY_A,
    block,
    &key,
    &(rfid.uid)
  );

  if (status != MFRC522::STATUS_OK) {
    Serial.print("Authentication failed: ");
    Serial.println(rfid.GetStatusCodeName(status));
    return;
  }

  status = rfid.MIFARE_Write(block, dataBlock, 16);

  if (status != MFRC522::STATUS_OK) {
    Serial.print("Write failed: ");
    Serial.println(rfid.GetStatusCodeName(status));
  } else {
    Serial.println("✅ Melody successfully written to RFID card!");
  }

  rfid.PICC_HaltA();
  rfid.PCD_StopCrypto1();
  delay(1500);
}

Recover password

Create my account

Arduino Project

Arduino RFID Music Player with DFPlayer Mini

Kit purchase

Course Introduction

Required Components

Wiring

Common Connections:

Writing the Code

Arduino Project

Arduino RFID Music Player with DFPlayer Mini

Kit purchase

Course Introduction

Required Components

Wiring

Common Connections:

Writing the Code

Subscribe to our newsletter