The Gravity Speech Synthesis Module converts text to spoken audio in English and Chinese, including mixed-language content. It connects via I2C or UART using the standard Gravity interface and includes a built-in speaker, so no additional audio hardware is needed.

The module supports text control identifiers for pronunciation adjustments, making it suitable for voice prompts, time and sensor data announcements, and interactive projects when paired with a speech recognition module.

Key Features

• Text-to-Speech – Supports English, Chinese, and mixed-language reading
• Built-in Speaker – No external speaker required
• Dual Interface – I2C (address 0x40) and UART via Gravity connector
• Text Control Identifiers – Fine-tune pronunciation, speed, and tone
• Wide Compatibility – Works with Arduino, Raspberry Pi, and other 3.3–5 V microcontrollers

Specifications

• Supply Voltage – 3.3–5 V
• Operating Current – < 50 mA
• I2C Address – 0x40
• Operating Temperature – −40 °C to 85 °C
• Operating Humidity – 5–85 % RH
• Dimensions – 37 × 32 mm

Ideal For

• Voice prompts and announcements
• Robot speech and interactive projects
• Sensor data and time readouts
• Accessibility applications

Package Contents

• 1× Gravity Speech Synthesis Module (with built-in speaker)
• 1× Gravity 4-pin I2C/UART sensor cable