Downloads and Links:

• Ai-Thinker VC-02 _Datsheet
• VC-02 Ai-Thinker _Command Table
• For Creating your custom firmware
• Offline Voice Recognition Module _Github
• Voice Command List for factory firmware – VC_factory command list
• VC-02 Kit Specifications – VC-02-kit_specification

About Ai-Thinker VC-02-Kit | Offline Voice Recognition Module

The VC-02-Kit is a development board designed for the VC-02 module, and it is a shared the same board with the VC-01-Kit. The development board integrates the CH340C serial port to a USB chip, providing a basic debugging interface and USB upgrade interface, designing wake-up light and cold and cooling lamp, providing status indication and control instructions, and easy to debug the simple control function. VC-02 is a low-cost pure offline speech recognition module developed by Shenzhen.

Ai-Thinker Technology Co., Ltd. The module uses the voice chip US516P6 launched by Unisound, and continuously optimizes and innovates algorithms in speech recognition technology. The offline recognition algorithm and chip architecture are deeply integrated to provide customers with ultra-low-cost offline speech recognition solutions. It can be widely and quickly applied to smart homes, all kinds of smart small household appliances, 86 boxes, toys, lamps, and other products that need voice control. The US516P6 chip uses a 32-bit RSIC architecture core and incorporates a DSP instruction set
specifically for signal processing and speech recognition, an FPU arithmetic unit that supports floating-point operations, and an FFT accelerator. VC-02 supports offline identification of 150 local instructions, an RTOS lightweight system, rich peripheral interfaces, and simple and friendly custom tools.

Features:

    All GPIOs can be configured as external interrupt input and wake-up source
    One full-duplex UART with the maximum rate of 3Mbps
    Support I2C，DAC，PWM and multiple interfaces
    Built-in 242KB high-speed SRAM
    Built-in 2MB FLASH
    Support dual-channel DAC output
    32bit RISC core, running at 240MHz
    Support DSP instruction set and FPU floating point operation unit

Specifications:

    Product:  Voice Module
    Model: Ai-Thinker VC-02
    SRAM:242KB
    FLASH:2MB
    Voltage: 5V
    Current: greater than 500mA
    Interfaces UART/I2C/PWM/DAC/GPIO
    IO: 5 GPIOs
    UART rate: UART1 default 115200 bps、UART0(IOB8) default 57600
    Package: DIP-19（2.54 spatial standard pin header）
    Dimensions: 42.2 x 35.6(±0.2)mm