Hello, all.
I am working on a project that uses the DFPlayer Mini MP3 Player, and I have been having some issues with it overheating. (Schematic can be found below). From what I have seen online, my application is very different than all the rest. I am not wanting to drive speakers with this module: I want to output the audio to a Kenwood radio. I have seen some reports online of fake/offbrand modules having issues with overheating, so that could be the issue (I purchased them off Amazon). However, I want to make sure that's not it before I redesign my custom PCB.
I haven't left it powered up long enough to let the magic smoke out of the components because I don't want to fry my MP3 board but especially the Olimex one.
Setup
uC: Olimex ESP32-PoE-ISO
MP3: DFPlayer Mini MP3 Player
Issue:
uC: Components on the Olimex board heat up immediately upon power-up and only get hotter
MP3: MP3 player's SD card slot slowly starts heating up upon power-up
Signals
TX: Olimex board's UART TX signal
RX: Olimex board's UART RX signal
MIC_OUT: Audio output to a potentiometer (for attenuating signal before going to Kenwood radio)
MIC_GND: Audio ground to Kenwood radio
BUSY: Digital output to Olimex board
Any help is appreciated!
7 posts - 5 participants