XY-V17B Serial Control Voice Module: Versatile Microcontroller MP3 Playback Solution
The XY-V17B Serial Control Voice Module is a powerful and highly integrated audio playback solution designed for embedded systems and IoT applications. This compact board simplifies the process of adding high-quality audio prompts, background music, or sound effects to any project. It supports both MicroSD (TF) cards and standard SD cards via an integrated slot for flexible storage options.
Its primary strength lies in its versatile control methods: it can be operated via straightforward serial commands (UART/TTL) from any microcontroller (Arduino, Raspberry Pi, STM32, 8051, etc.) or through simple IO triggers. This makes it an ideal choice for a wide range of uses, including automated announcements, interactive toys, smart home devices, alarm systems, and industrial machinery where audible feedback is necessary.
Key Features
- Flexible Control Modes: Supports UART Serial control (TTL level) and simple ADKEY/IO port trigger control, allowing for seamless integration with virtually any microcontroller or even standalone operation.
- Dual Storage Options: Features a built-in slot compatible with both MicroSD (TF) cards and standard SD cards (up to 32GB typical).
- High-Quality Audio Output: Provides a standard 3.5mm headphone jack output and dedicated pins for direct connection to an external speaker (via an appropriate amplifier if needed), ensuring clear sound reproduction.
- MP3 and WAV Support: Compatible with common audio file formats, offering flexibility in content creation.
- Adjustable Volume: Supports volume adjustment via serial commands, giving dynamic control over audio output levels.
- Wide Voltage Range: Operates over a standard supply voltage range, making it adaptable to various project power requirements.
Technical Parameters (Specifications)
| Parameter |
Value/Description |
| Model Number |
XY-V17B |
| Input Voltage Range |
3.5V to 5V DC (5V recommended for optimal performance) |
| Audio File Format |
MP3, WAV |
| Storage Type |
SD Card / TF Card (Supports up to 32GB, FAT16/FAT32 format) |
| Communication Interface |
UART Serial (TTL Level, e.g., 9600 bps baud rate) |
| IO Control Modes |
ADKEY Mode, Standard IO Control Mode |
| Audio Output |
3.5mm headphone jack, Speaker output pins (requires external amplifier for passive speakers) |
| Quiescent Current |
~15mA |
| Dimensions |
(Standard module dimensions, typically approx 40mm x 30mm) |
Usage Instructions
The XY-V17B can be used in two primary ways:
1. Serial (UART) Control (Recommended for Microcontrollers)
This method provides full control over file selection, volume adjustment, playback modes (loop, single play), and status feedback.
- Wiring: Connect the module’s RX pin to the microcontroller’s TX pin, and the module’s TX pin to the microcontroller’s RX pin. Ensure GND is common.
- Communication: Send specific data packets (hexadecimal commands) at a default baud rate (commonly 9600 bps) to control playback. For example, a command sequence can instruct the module to play file “001.mp3”.
- File Naming: Files on the SD card must typically be named in a specific numerical format (e.g.,
0001.mp3, 0002.mp3, etc.) as defined by the module’s protocol.
2. IO/ADKEY Control (Simple Triggering)
This mode allows you to trigger specific audio files by applying voltage to designated pins, ideal for push buttons or simple switch activation without complex coding.
- Configuration: Refer to the module’s datasheet to set up which IO pins correspond to which MP3 file triggers.
Q: Does this module have a built-in speaker?
No, the module does not include a speaker. It has a 3.5mm audio jack for headphones or powered speakers, and dedicated pins for connecting passive speakers if you add an external audio amplifier board (purchased separately).
Q: Can I use this with a 3.3V Arduino or Raspberry Pi?
Yes, the module typically works within the 3.5V-5V range and communicates using standard TTL logic levels, making it compatible with most 3.3V and 5V systems. We recommend powering it with a stable 5V supply for reliability.
Q: How do I name the MP3 files on my SD card for the module to recognize them?
The specific naming convention is crucial. You must typically name files sequentially with leading zeros, such as 0001.mp3, 0002.mp3, up to 0255.mp3 (check the official datasheet for exact naming requirements).
Q: I am a business/developer. Is this suitable for commercial applications?
Yes, this module is widely used in commercial embedded applications like smart home systems and industrial control panels due to its low cost, reliable performance, and simple interface options. Bulk purchasing options are available upon request.
Q: Do I need special software to format the SD card or upload the audio files?
No special software is needed. You format the SD card as FAT16 or FAT32 using your computer’s standard formatting tools, and then drag and drop your MP3/WAV files onto the card using Windows Explorer or macOS Finder.
