DFPlayer Mini didn't working anymore

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15

Hey there,

i tested it with new DFPlayer and new speakers. Now i found the reason:

  1. it didn't work with 3.3v > i get only buzz noises
  2. it works fine with 5 v but the 9v battery converter that contains in most arduino-starter kits didn't work clean or didn't have enough voltatge/watt
  3. it works fine with usb power over FTDI-connector, so DFPlayer would get power over arduino VCC
  4. System Information Folder maybe make some issues too, i deleted it and copy some mp3 files to root directory of sd card - it makes no differences if you using 0001.mp3 or blubb.mp3
    but now the interesting part: I delete two mp3 files and windows display only 4 mp3 files but dfplayer detect 6 mp3 files and play all of them. so i think dfplayer looking for file sectors and didn't use the MFT or Index of FAT.

i Will check it out again with raw power pin of arduino and a 9v battery directly

Regards, Web