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...
- 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")