DFPlayer is an ATmega328-board to control a soundmodul "DFPlayer - mini".
For more details please refer to the manual.
There is also a hardware-version for a SoundFred available:
For compilation as SoundFRED active/deactivate #defines in DFPlayer.ino and use this boarddefinition.
For more details please refer to the manual.
DFPlayer requires my libraries listed below in addition to various Arduino standard libraries: