Offline Voice Recognition Module – Learnable 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 features 121 built-in command words commonly used in education and smart home settings and supports 17 customized commands (e.g., recording a cat's meow for an automatic feeder). The module is highly integrated, including an onboard speaker and microphone, providing real-time voice feedback.

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.

Specification

- 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?

Documents

- Product wiki

Command Words List

- Interface Diagram

- Arduino Tutorial

- MakeCode Tutorial