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micropython-dfplayer

Micropython implementation of DFPlayer control using UART 1 (secondary Serial connection) on ESP8266

If you are not limited to ESP8266 (with its TX-only UART) you should consider using https://github.com/jczic/KT403A-MP3/blob/master/kt403A.py instead.

To use, wire up the DFPlayer Mini MP3 breakout module following this loom...

alt text

  • DFPlayer Mini
    • VCC => 5V Vin
    • All GND pins => GND
    • Busy Pin (immediately opposite VCC) => GPIO2 (NodeMCU D3)
    • RX Pin (immediately below VCC) => GPIO0 (NodeMCU D4)
    • SPK1+SPK2 to a 3W speaker (limiting the volume to 0.5 can help prevent brownout for larger wattage speakers)
    • ...or...
    • DAC_R+DAC_L to a 3.5mm Line Out Jack

The following example code uses the ScanPlayer.

It will first scan all available folders for files called 000_XXX.mp3 001_XXX.mp3 and so on.

It considers only folders named 00-09.

It will play a single track from each folder in turn, only repeating a folder when all folders are exhausted, and only repeating a track when all tracks have been exhausted.

from time import sleep
import scanplayer
player = scanplayer.ScanPlayer()
availableFolders = list(player.tracks.keys())
if len(availableFolders) > 0:
    keyPos = 0
    while True:
        folder = availableFolders[keyPos]
        player.playFolder(folder)
        while player.playing():
            sleep(0.1)
        keyPos = (keyPos + 1) %  len(availableFolders)
else:
    print("No available tracks")

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Micropython implementation of DFPlayer control using UART 1 (secondary Serial connection)

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