CH7003 & CH7800 MP3 Serial Control Voice Playback Module with 16MB Storage

The CH7003 & CH7800 MP3 Voice Module is a high-performance, serial-controlled voice playback solution designed for embedded systems, interactive devices, and DIY projects. With plug-and-play USB connectivity, you can easily upload your own MP3 files—no burner, special software, or repeated writing is needed. Simply drag and drop files into the virtual USB drive, making it an ideal module for rapid prototyping and production.

The CH7800 features a 330KB internal memory, suitable for storing up to 300 seconds of audio at 8KHz, and includes a 3W audio amplifier. The CH7003 version offers an upgraded 16MB memory (15.8MB usable) and comes with a speaker for direct sound output. Both modules support UART TTL control, multiple playback modes, and a variety of audio formats and effects.

Key Features:

• Supports MP3 format with ISO13813-3 Layer 3 decoding

• USB 2.0 file upload (no need for software or burning tools)

• UART (TTL level) control with default 9600 baud rate

• Multiple playback modes: loop, single play, interruptible, non-interruptible

• Built-in 3W amplifier IC (CH7800) and onboard speaker (CH7003)

• Supports audio effects like Normal, Jazz, Classic, Pop, and Rock

• Compatible with 3.3V and 5V systems

• Wide operating temperature: -40°C to 80°C

• Plug-and-play memory management via USB

CH7800 Technical Specifications:

• Operating Voltage: 2.5V–5.2V

• Storage Capacity: 330KB (approx. 300s at 8KHz sampling)

• Audio Sample Rates: 8/11.025/12/16/22.05/24/32 KHz

• Output Power: 0.5W (PWM) / 3W (with amplifier)

• Static Current: 10mA

• UART Interface: Standard serial TTL

• Dimensions: 35.5mm × 25mm × 5mm (without speaker height)

• Humidity Tolerance: 5% – 95%

CH7003 Technical Specifications:

• Operating Voltage: 2.5V–5.2V

• Storage Capacity: 16MB (15.8MB usable)

• Speaker Included: Yes

• Other Features: Same MP3 support and UART functionality as CH7800

How to Use:

1. Connect the module to a PC via USB and copy MP3 files directly into its storage.

2. Interface with any microcontroller via UART to send playback commands.

3. Choose playback mode (loop, single, interruptible) as needed in your program.

4. Power the board using 2.5–5.2V and enjoy built-in audio output or connect external speakers.

Applications:

• Voice prompts in vending machines or kiosks

• DIY talking robots and interactive toys

• Alarm and reminder systems

• Smart home devices

• Public announcement or message playback systems

Package Includes:

• 1 × CH7003 or CH7800 MP3 Voice Module (CH7003 includes speaker)

Why Choose This Product?
These modules combine ease of use with powerful audio output and flexible control. Whether you're prototyping a voice-enabled product or building an educational kit, the CH7003/CH7800 series provides a reliable and convenient voice playback solution.

Add voice to your projects easily and efficiently—choose the CH7003 or CH7800 MP3 Voice Module today!