Gravity: Offline Voice Recognition Sensor is a system based on a special voice recognition chip. Its peculiarity is that it works without the need for an internet connection. The chip has 121 built-in command words and supports the addition of 17 custom command words. In addition, its compatibility with many common controllers makes it flexible, offering solutions to manufacturers and electronics enthusiasts for voice interaction. It is suitable for applications that require voice control, such as smart home appliances, toys, lighting fixtures, and robotics projects, among others
The Gravity: Offline voice recognition unit was designed with an emphasis on usability, offering a user-friendly design. It features 121 predefined command words, eliminating the need to record the user’s voice. For example, in a smart window system, it can automatically recognize the phrase “close window” and activate automatic window closure, thus reacting to sudden changes in the weather. The ability to operate without an internet connection offers flexibility and allows integration into various applications such as smart home appliances, games, lighting fixtures and robotics projects Features Self-learning function: Control the module to learn command words by the voice, and any audio can be trained as a command Support I2C and UART, with a Gravity interface Compatible with 3.3V/5V Built-in with 121 commonly-used fixed command words The module has a built-in speaker and an interface for an external speaker, which can provide real-* time voice feedback on recognition results Equipped with power indicator (red) and recognition status indicator (blue) Dual microphones provide better noise resistance and longer recognition distance Compatible with Arduino controllers: Arduino UNO, Arduino Leonardo, Arduino MEGA, FireBeetle series controllers, Raspberry Pi, ESP32