DFPlayer - A Mini MP3 Player (DFR0299)

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Sing for the moment! The DFPlayer Mini is a small and low cost MP3 module with an simplified output directly to the speaker. The module can be used as a stand alone module with attached battery, speaker and push buttons or used in combination with an Arduino UNO or any other with RX/TX capabilities.


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Clearly this Mini MP3 Player supports many applications and configurations. Would oner of these applications be a simple player that commences playing whatever is stored on the SD card as soon as +5VDC power is applied to the module?



Regards,



Ross

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Bought 2 of these some time ago, very happy with them. One for project, one as spare.
Will do a test later and let you know. It will be today.
Cheers
Jim

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Jim,

Thanks for your help. Looking forward to your test result.

Ross

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Hi Ross,

Reading over the information from DFRobot, they will start playing when an SD card is inserted, but I couldn’t see anywhere mentioning if you can configure it to start playing on power-up without an external microcontroller to do that for you.

Will have to wait and see what Jim discovers! :slight_smile:

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The answer is YES !!!

Connected a speaker from an old PC stereo system. (audio is quite loud and not high fidelity)
Connected ADKEY1 to GND.
Connected 5V and it played first audio track to last audio track.

Keeping ADKEY1 to GND did not stop it playing the next track.
Once the last track was played it looped back to the start again.
The only thing I did was to turn on the 5V supply at the start.

Didn’t try anything with IO1 & IO2 which are supposed to change the volume level.

Cheers
Jim

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Awesome work Jim! Thanks for your help! :smiley:

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James,

Great effort and result. I’ll now buy one. I will use it to replace the music circuit of a Christmas ornament that died.

Thanks a lot for your support.

Regards,

Ross

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You may need to drop the Audio level to suit your speaker.
For such a small device the output level is quite high. (3W)
The Audio fidelity is pretty poor too.

Hope it suits what you intend to do with it.
Cheers
Jim

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Jim,

Thanks for the extra advice.

Regards,

Ross

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