Sound Issues (Static, looping, etc.)

[J.B. Kuma]

If you are using a DIYino the most likely cause is an improperly configured SD card, low battery, or bad solder joint for the speaker.

If you are using a "homebrew" type build possible causes are low battery, USB power, improper configuration, poor solder joints, faulty DFplayer chip

The first steps you should take are:
- verify soundfont.h is properly configured and your SD card is properly formatted
- verify the battery is fully charged
- - USB power may not be enough to properly power the amp
- ensure the TX pin is soldered well
- re-upload the sketch

If you are using a cheap 3rd party DFplayer there are a few known issues.
- some boards are poorly soldered and may be fixed with some retouching
- - ensure there is no bridging or bad solder joints, no components out of place or missing
- some boards are faulty and unusable
- some boards require a few extra lines of code (results may vary)
in ./library/DFPlayer_LSOS/DFPlayer.h add the command:
  inline void disableAllLoops() {
  setSendBuffer(0x11,0x00);
  send();
  }

in FX-SaberOS.ino find "dfplayer.playPhysicalTrack(track);" and replace it with:
  dfplayer.disableAllLoops();
  delay(100);
  dfplayer.playPhysicalTrack(track);

(see forum.arduino.cc/index.php?topic=361566.705 for progress and details)