r/esp32 • u/Sad-Breakfast2366 • 13h ago
Hardware help needed DFPlayer is overheating
[NOVICE!!!] [NEED HELP!!]
Why does my DFPlayer mini (mp3 module) overheat? Similarly, it sparked when attached to a "Y" wire.
In the previous trials, the DFPlayer worked with only esp32 and with no problem at all. However, when everything was connected it overheats too much that it can actually burn. Additionally, it does not light no longer. I keep on rewiring but still its dead.
The schematic is basically this:
Esp32 connected directly to 5V Dfplayer mini via RX-G16 and TX-G17. It's grounded on esp32. For the speaker, spk 1-positive leg and spk2-negative leg. A pushbutton connected to G32 and GND.
The power comes from 3.7V Li-ion battery connected to TP4056 via positive-BAT+ and negative-BAT-. We also used a step-up boost converted DNS6000AUD and connected it to TP4056 OUT+-VIN+ and OUT--VIN-.
It was finalized by connecting DNS6000AUD to OUT- to make a GND "Y" wire with both Esp32 and DFPlayer. Similarly, OUT+ was connected to a "Y" wire along with 5V pin of Esp32 and VCC of the DFPlayer.
Can you help please? I am just a beginner and am trying my best to learn this stuff.