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DF ROBOT Gravity: Offline Voice Recognition Sensor (121 Built-in Commands + Custom Commands)
The Offline Speech Recognition Module is an efficient solution ideal for human-computer interaction, machine learning, voice assistants, and smart home voice control projects. It is easy to use and compatible with Arduino, micro:bit, and ESP32, with detailed tutorials provided. It offers plug-and-play functionality through I2C and UART. The module supports recognition of 121 built-in English command words, with additional customizable commands. (e.g., recording a cat's meow for an automatic feeder). This module is designed for command recognition (keyword-based), not full speech-to-text or AI conversation. It is highly integrated, including an onboard speaker and microphone, providing real-time voice feedback.
User Manual / Datasheet / Example Codes Etc.
Features
- User-Friendly: Plug and play, compatible with Arduino UNO, micro:bit, and ESP32.
- 121 Pre-Programmed Commands: Ready for immediate use without any setup.
- Self-Learning Capability: Supports the addition of 17 customized command words.
- Offline Operation, Enhanced Privacy: No network required.
- High Integration: Includes an onboard speaker and microphone.
- Instant Voice Feedback: Provides real-time recognition results.
Specifications
- Operating Voltage: 3.3 - 5V
- Maximum Operating Current: ≤370 mA (5V)
- Communication: I2C/UART
- I2C Address: 0x64
- Fixed Commands: 121
- Fixed Wake-up Command: 1
- Custom Commands: 17
- Learning Activation Command: 1
- Onboard Microphone Sensitivity: -28dB
- Module Size: 49×32 mm / 1.93×1.26”
- Operating Temperature: 0-70℃
Applications
- Voice recognition interaction
- Voice-controlled terminal
- Competition and project development
Package Includes
- Gravity: Voice Recognition Module - I2C & UART (V1.1) x1
- Gravity-4P I2C/UART Sensor Connector x1