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Sing for the moment! The DFPlayer Mini is a small and low cost MP3 module player 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. Through a simple serial port, you can play the designated music without any other tedious underlying operations.
Supported sampling rates (kHz): 8/11.025/12/16/22.05/24/32/44.1/48
24 -bit DAC output, support for dynamic range 90dB , SNR support 85dB
Fully supports FAT16 , FAT32 file system, maximum support 32G of the TF card, support 32G of U disk, 64M bytes NORFLASH
A variety of control modes, I/O control mode, serial mode, AD button control mode
Advertising sound waiting function, the music can be suspended. when advertising is over in the music continue to play
Audio data sorted by folder, supports up to 100 folders, every folder can hold up to 255 songs
30 level adjustable volume, 6 -level EQ adjustable
All music files must be placed in / mp3 folder
The music file name must use 4 words, such as 0001.mp3, 0002.mp3 ..... 0255.mp3
Music files more than 4 words after unlimited, like 0001_Bruno_Mars_Count_On Me.mp3 is no problem.
If you delete a file from the SD card, DFPlayer Mini still has a way to broadcast it, weird! The newly created SD card successfully plays the desired music file.
Delay (sec); This is to tell Arduino the length of the music you want to play, if you give less than two seconds, and the next instruction is to play another song, Arduino will interrupt the current broadcast, and continue to broadcast next song.
mp3_play (74); This command plays 0074.mp3 this music file.