DFPlayer - Mini - AutoPlay

Hi,

DFPlayer Mini has several ways to start playback, including serial control, IO button control, and ADKEY button control.

However, VCC is only the power input. Supplying power to VCC will only turn on the module. It will not automatically start playing audio by itself.

To make it play automatically after power-on, you need one of these methods:

1. Use a microcontroller to send a “play” command after the module powers up.

2. Use IO1/IO2 or ADKEY mode, and add a small external circuit to simulate a button press after power-on.