I've bought an Arduino speaker module. How should I connect the module, if I want to use it with DFPlayer Mini? The problem is that the speaker module has 3 pins: GND, VCC, and IN; though the DFPlayer Mini has 2 pins for connecting a speaker: SPEAKER + and SPEAKER -.

1 Answer 1


The DFPlayer already has an amplifier on it, so you can connect the speaker directly.

You can just leave out the board you bought from AliExpress, and only use the speaker.

  • Can I use the board with the DFPlayer? The DFPlayer has no filtering condensers, I'd like to use the ones bundled with the Speaker Module.
    – Starter
    Commented Nov 13, 2020 at 6:29
  • In that case you can use the DAC_R or DAC_L output of the DFPlayer, and connect that to the IN pin of your speaker amplifier board.
    – Gerben
    Commented Nov 13, 2020 at 9:36
  • so I need to connect the board's GND to the player's GND, the board's VCC with the player's VCC, and the board`s IN with the player's DAC_R?
    – Starter
    Commented Nov 15, 2020 at 14:18
  • Yes. Though I'm still a bit puzzle why you'd want to go that route.
    – Gerben
    Commented Nov 15, 2020 at 16:43
  • Gerben, do I need to run the startDAC command in my sketch?
    – Starter
    Commented Dec 7, 2020 at 12:17

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