NFC Music Player

This Arduino project plays music, selected by using NFC tags. I don't have an LP record player, but I do have LP records - using this project, I can now "play" them.

I want to build this

Components

To build this, you will need an Arduino, an RFID tag reader/writer (mine is RC522 based) and a music player (YX5300), which can read files from a micro-SD and can be connected to normal speakers. This means: Three electrical components and some wires.

Overview

Rough steps are:

1. Load tag-writer to your arduino, write data to your NFC tags.
2. Sort your music into folders, the folder names must exactly match "01", "02" etc.
3. Use util/convert_files.sh and util/prefix_files.sh to convert your music into the correct file format and to have them named in a way the music player understands.
4. Write the music to your SD card
5. Assemble
6. Load player-arduino to your arduino.
7. Hide the electronics and the tags in whatever manner you like. I added sheets of paper with strategically placed nfc-stickers into my vinyl sleeves.

Sub-projects

player-arduino

This folder contains code for the actual end result. This can be loaded onto your arduino once the setup is done. Wiring is explained in src/main.cpp Like tag-writer, this project was developed using PlatformIO. You will need an RFID library and a (library for the music player)[https://github.com/MajicDesigns/MD_YX5300]. Both libraries are available through PlatformIO. I don't know if they are available in the Arduino IDE.

tag-writer

To select music from the SD card, a folder index is read from the NFC tags. This program will allow you to write these indices to your tags. Prepare as many as you want/need. I recommend noting down the index on the tag.

util

For the sound module to read the cards, they have to be in a specific format and have to have a specific name. These two utility scripts will alow you to batch-convert and batch-rename one album at a time.

music/soundeffects

For giggles, I want scratchy noises when starting music. These can be found here. Note the license, if you want to use them.

case

Contains a prototype 3D-printable basic case for the electronic components. Not terribly pretty, but it hides the electronics well enough.

I want to improve this

There are some improvements left to do in the current version. If the tag is placed in an awkward position, the music will start over and over again. There is currently no support for shuffling music, changing volume, pausing the music or skipping songs. If you implement any of these fixes or features, feel free to send me a pull request.

I have a question

Please ask me anything you want to know, including request for help building this, via github or email.