DFPlayer - A Mini MP3 Player for DIY Arduino / ESP32 Sound Project

Genuine product and works superb. I have very little knowledge of Arduino, stetches or coding - but (with a little help from copilot) I managed to figure out how to use this to add audio to my project. You need to do some research into how this manages files - it's not as simple as a normal MP3 - but it's not difficult once youve figures it out.

I looked at several websites to confirm the pin layouts and watched several videos but couldn't get it to play or even get the blue led to light. In its simplest form you can use this without an Arduino if you connect buttons, so that was my test setup. I powered from a bench supply at 4.2v, tried a 5v usb, even tried an Arduino at 5v and 3.3v to no avail. Checked wiring over and over again. It turns out that there are three strict requirements for it to play. 1. The SD card must be formatted at FAT16 or FAT32 only. Windows showed my SD was FAT. 2. The mp3 files need to be stored in a folder called MP3 (I didn't test, but I assume caps is required). I didn't try WAV files. 3. Each mp3 filename must start with a 4 digit number such as 0001, 0002, etc. Note: you can have other filename text after the 4 digits, such as "0001 my first track.mp3", the rest of the name just gets ignored. You can also store files in numbered folders 00 - 99. In these folders the filenames then need to start with 3 digits 000 - 999. It is covered in the manual on the DFrobot website but i didn't find it very clear.

Original and best. These even work where the cheaper clones fail. I only buy these now.

I have used a fair few of these modules and they are so variable that I made a test jig to screen out the duds..! Unfortunately the ones I received were exactly that. Audio did come out but with a continuous clicking sound, and not the clicking from the 5V/3V serial port issue either. Plus I mostly know what I am talking about. Plus the jig and CF card worked with other modules. Both the ones I bought from here had the same problem, so don't think I was just unlucky. My advice with these is always use a socket, then you too can sift through the ones that don't work at all, or weirdly misbehave...

These actually work consistently without interference or strange noises unlike the cheaper knockoffs that aren’t much cheaper. I’m using two of these for ESP32 audio notifiers, door bell and door chimes.

I initially bought some off that auction site and, surprise, they turned out to be dodgy. They would always boot at full volume and distort. I tried everything and gave up, finally trying these which have been flawless. Highly recommended over that cheap junk from (rhymes with relay).

Il s'agit bien d'un original de chez DFrobot. La fonction autoplay est donc disponible.

Total decepción con este reproductor. Los he comprado como reserva para varios proyectos que ya tengo funcionando con otros módulos DFPlayer Mini oficiales y arduino. Nada más abrirlos observo que el tamaño del chip difiere de mis antiguas unidades y de las fotos que muestra el fabricante tanto en Amazon como en su web. Al probar probarlo no inicia con normalidad, lo hace 1 de cada 3 o 4 veces, y cuando lo hace el volumen está al máximo. En reproducción de archivos de sonido cortos en formato mp3 mis antiguos módulos lo hacen sin problema y este tiene un retraso entre ellos, a veces ni se reproducen. Desde que se envía la orden de preproducción con arduino hasta que se lee el pin BUSY el tiempo a aumentado muchísimo, con los módulos antiguos este era de 150ms, ahora es más de 500ms. Una pena que este genial modulo oficial haya perdido sus principales características comportándose como los clones de 1€. Para mayor decepción la comunicación con el fabricante es nula respondiendo lo que les da la gana.

問題無しです。

Used for a posted product for my daughter. The audio she recorded to to an SD card played without any issues from this module.

Works great! I set this up and got a song running in 15 minutes. The makers made it super simple with online specifications & schematics. I’ll be enjoying this little guy with my Arduino soon!