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[项目] DIY一个RFID音乐盒-回味老歌，致敬经典

这次以RFID音乐盒为载体，回味老歌，致敬经典

听的是老歌咀嚼的是青春回忆

一首首经典老歌,勾起我们逝去的青春记忆

“每一首老歌的背后都藏着你我的青春记忆，有考试时的紧张，有情窦初开的甜蜜，还有大考后的放松，也有失恋的难过……。”

那些经典歌曲总能穿破岁月的灰尘，越过遗忘的脑海，复活在每个人的心中。让我们坐上重返青春的列车，一起聆听那真挚、浪漫、一尘不染的美妙之声。

聆听这样的歌声，总使人有时光倒流的感觉，仿佛又回到了从前，回到了我们年轻的时候，让我们致敬经典，致敬曾经的歌坛巨星。致敬那一去不返的青春。

值此大疫之时，历尽沧桑不低头，归来日快意人生。

项目所需硬件如下：

1.Arduino UNO

DIY一个RFID音乐盒-回味老歌，致敬经典图1

2.DFPlayer MINI
DIY一个RFID音乐盒-回味老歌，致敬经典图2

3.RC522和6个钥匙扣Tag
DIY一个RFID音乐盒-回味老歌，致敬经典图3

硬件连线图

[mw_shl_code=applescript,false]/*
*
This Sketch is made by gada888
-----luoyang-China------
-----2020-03-18----------
*/
#include <SPI.h>
#include <MFRC522.h>
#include "Arduino.h"
#include "SoftwareSerial.h"
#include <DFPlayerMini_Fast.h>

#define SS_PIN 10
#define RST_PIN 9

MFRC522 mfrc522(SS_PIN, RST_PIN); // Create MFRC522 instance.
SoftwareSerial mySerial(7, 6); // RX, TX
DFPlayerMini_Fast myMP3;
void setup()
{
  mySerial.begin(9600);
  myMP3.begin(mySerial);
  myMP3.volume(23);

  Serial.begin(115200); // Initiate a serial communication
  SPI.begin();    // Initiate  SPI bus
  mfrc522.PCD_Init(); // Initiate MFRC522
  Serial.println("Approximate your card to the reader...");
  Serial.println();
}

void loop()
{
  // Look for new cards
  if ( ! mfrc522.PICC_IsNewCardPresent())
  {
return;
  }
  // Select one of the cards
  if ( ! mfrc522.PICC_ReadCardSerial())
  {
return;
  }
  //Show UID on serial monitor
  Serial.print("UID tag :");
  String content= "";
  byte letter;
  for (byte i = 0; i < mfrc522.uid.size; i++)
  {
   Serial.print(mfrc522.uid.uidByte < 0x10 ? " 0" : " ");
   Serial.print(mfrc522.uid.uidByte, HEX);
   content.concat(String(mfrc522.uid.uidByte < 0x10 ? " 0" : " "));
   content.concat(String(mfrc522.uid.uidByte, HEX));
  }
  Serial.println();
  Serial.print("Message : ");
  content.toUpperCase();
  if (content.substring(1) == "69 E4 3C A3") //change here the UID of the card/cards that you want to give access
  {
Serial.println("Authorized access");
Serial.println();
myMP3.play(1);
delay(1000);
  }

if (content.substring(1) == "67 33 7E 7A") //change here the UID of the card/cards that you want to give access
  {
Serial.println("Authorized access");
Serial.println();
myMP3.play(2);
delay(1000);
  }

  if (content.substring(1) == "D7 3F 7C 7B") //change here the UID of the card/cards that you want to give access
  {
Serial.println("Authorized access");
Serial.println();
myMP3.play(3);
delay(1000);
  }

  if (content.substring(1) == "F7 E6 51 7B") //change here the UID of the card/cards that you want to give access
  {
Serial.println("Authorized access");
Serial.println();
myMP3.play(4);
delay(1000);
  }

  if (content.substring(1) == "E7 B6 72 7B") //change here the UID of the card/cards that you want to give access
  {
Serial.println("Authorized access");
Serial.println();
myMP3.play(5);
delay(1000);
  }

  if (content.substring(1) == "37 18 84 7B") //change here the UID of the card/cards that you want to give access
  {
Serial.println("Authorized access");
Serial.println();
myMP3.play(6);
delay(1000);
  }

if (content.substring(1) == "87 2E 79 7A") //change here the UID of the card/cards that you want to give access
  {
Serial.println("Authorized access");
Serial.println();
myMP3.play(7);
delay(1000);
  }

else {
Serial.println(" Access denied");
delay(1000);
  }
} [/mw_shl_code]

代码运行后，打开串口COM。按个去试每一个钥匙扣Tag，可以看到COM口给出的每个Tag的UID代码。把他们抄下来，写在每个tag后面，让再填入程序的if-else
语句里。这个程序里我填的都是我买的Tag码，记住：每个Tag的UID码都不一样，你需要填你自己的。

在SD卡里copy入以下mp3文件

硬件测试如下

DIY一个RFID音乐盒-回味老歌，致敬经典图9