Gravity: Speech Synthesis Module V2.0

DFRobotSKU: DFR0760
Sale price £25.60
incl. VAT
excl. VAT
Only 6 units left

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If you're interested in adding voice functionality to your projects, this is the module to buy! The module supports both Chinese and English, and can display current time and environmental data. It can be used alongside a speech recognition module for basic interactive conversations. For connectivity, it offers I2C and UART modes and a gravity interface, providing compatibility with many common controllers. Additionally, it includes a built-in speaker, so there's no need to buy one separately.

Note: the addresses of the speech synthesis module and micro: bit motor driver board are the same, so they cannot be used together.

Revision History

As of the 12th of February, these are the upgrades to the newest version of the board.

  • More natural pronunciation
  • Fewer pronunciation errors for polyphone characters


  • Supports Chinese, English, and mixed reading in Chinese and English
  • Comes with a Speaker
  • Gravity I2C/UART Communication
  • Support Multiple Text Control Identifiers

Connection Example - I/O Expansion Shield V7 with I2C and UART Connections


  • Power Supply: 3.3V~5V
  • Operating Current: <160mA
  • I2C Address: 0x40
  • Operating Temperature Range: -40°C~85°C
  • Dimension: 42 x 32mm



No. Label Description
1 D/T I2C data line/TX
2 C/T I2C clock line/RX
3 GND -
4 VCC +
5 AOP Audio Output Positive
6 AON Audio Output Negative

Package Contents

  • 1x Gravity: Speech Synthesis module V2.0
  • 1x Gravity-4P I2C/UART Sensor Connector

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