The DFPlayer Mini MP3 Module is a board I/O module in the LabWired part catalog. Its catalog type is dfplayer-mini. It connects to the MCU over GPIO. The catalog gives a supply range of 3.2–5 V. It has 16 pins. A registered peripheral model runs in the engine: the firmware talks to it over the real bus and gets device-accurate responses.
From the catalog: Decodes the 10-byte serial frames (9600 8N1, checksum checked) from the RX pad, so hardware UART and SoftwareSerial both work. Play (0x03) drives BUSY LOW for a constant 1 s clip; volume (0x06) is stored; pause/stop release BUSY. No SD card, no MP3 decoding and no audio on SPK_1/SPK_2; TX sends no replies.
| Category | Board I/O modules |
|---|---|
| Catalog type | dfplayer-mini |
| Interface | GPIO |
| Supply range | 3.2–5 V |
| Pins | 16 |
| Datasheet | DFRobot DFPlayer Mini (DFR0299) manual |
Simulated device model
Built from the datasheet. Implemented from the part’s register documentation and exercised by automated tests. Nothing physical was ever placed next to it.
| Pin | Electrical type | Function |
|---|---|---|
VCC | Power input | Supply |
RX | Input | GPIO |
TX | Output | GPIO |
DAC_R | Passive | — |
DAC_L | Passive | — |
SPK_1 | Passive | — |
GND | Power input | Supply |
SPK_2 | Passive | — |
IO_1 | Passive | — |
GND2 | Power input | Supply |
IO_2 | Passive | — |
ADKEY_1 | Passive | — |
ADKEY_2 | Passive | — |
USB+ | Passive | — |
USB- | Passive | — |
BUSY | Output | GPIO |
All Board I/O modules · All parts
Modelled from DFRobot DFPlayer Mini (DFR0299) manual.