MP3
MP3 Micro SD Player
- Overview
- Commands
- On-Module Code
Play MP3 audio/music from files found on the attached Micro SD card. The audio quality is reasonable and single mono channel. There is no system load as the module only receives and processes simple commands, like start playing, or stop. The files on the Micro SD card are saved in standard FAT16/FAT32 file system and can handle SD cards up to 32GB. Note that you will not have access to the files directly. Only the MP3 decoder can read the files. You will need to move the Micro SD card to a PC to load it with MP3 files.
Micro SD card is required and is not included.
Key features • MP3 decoder | Resources 📄 Schematics PID: 0x070003 |
Modules ship without cables to reduce waste. Some specialty boards include a USB cable; for the rest, see Cables to add cables to your order.
| Function | Description |
|---|---|
SendCmd(c, a) | Send c command & a argument to mp3 module. |
WResponse(t, c, a) | t timeout, c code, a argument. Wait for response. |
Stop() | Stop playing. |
SetVol(v) | Sets v volume. (Min 0, max 30) |
IsBusy() | Returns 1 if busy. |
Loop(r) | Sets r repeat. |
Rst() | Reset mp3 module. |
PlayFile(f, d) | Play file. f Files and d directories must be named in numerics. |
DVer() | This driver version. |
Samples​
Example code for using this module's commands in popular languages.
New here? See Get Started to connect a module and send your first command.
- Python
- MicroPython
- JavaScript
- .NET
- Arduino
- MicroBlocks
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This sample project runs on a MicroBlocks-enabled device that is tethered to this module. Note that this tethered module needs to have the official DUELink firmware and its module driver. See MicroBlocks page to learn more.
Click the button below to open, edit, and run the project directly on MicroBlocks' website.
Peek under the hood
The script below is this module's driver — it teaches the hardware how to respond to the commands listed above. It ships pre-loaded from the factory; most users never need to open it.
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Code that runs directly on this module's MCU. See On-Module Code for an overview.
- Script
- Arduino IDE
This example runs using the default DUELink Internal Engine using its Scripting Language, and it expects the module's driver to be loaded first, see the Commands Tab.
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See Arduino IDE page for more info.
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Ordering Info
| Product | Part Number | Price |
|---|---|---|
| DUELink MP3 | GDL-SOMP3-A | $14.95 |