SKU: IOWC-1395
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AI-Thinker VC-01-Kit Offline Speech Recognition Module

₹859.00 (Inclusive of all taxes)
Out of Stock

The AI-Thinker VC-01-Kit is a development board for the VC-01 offline speech recognition module, featuring the US516P6 chip with a 240MHz RISC core and DSP for local command processing. It provides a 5V USB interface via CH340C for easy debugging and firmware updates.

Features

  • Offline recognition of 150 local voice commands without cloud dependency.
  • Powered by Unisound US516P6 chip with 240MHz 32-bit RISC core and DSP/FPU.
  • Integrated CH340C USB-to-serial for straightforward programming and debugging.
  • Features 2MB flash and 242KB SRAM for algorithm and command storage.
  • Provides versatile interfaces including UART, I2C, PWM, DAC, and 5x GPIO pins.

Out of stock

Description

The VC-01-Kit development board centers on the VC-01 module, a cost-effective, pure offline speech recognition solution built around the Unisound US516P6 voice chip. This chip integrates a high-performance 32-bit RISC processor running at 240MHz, a dedicated DSP instruction set for signal processing, an FPU for floating-point operations, and an FFT accelerator for efficient audio analysis, all optimized for embedded voice recognition tasks.

The board simplifies development with an onboard CH340C USB-to-serial converter, offering both a programming/debugging interface and a power supply path via a standard USB port. Status LEDs for wake-up and cooling functions provide visual feedback during operation. Designed for rapid integration, the module runs a lightweight RTOS and supports a wide range of peripheral interfaces, enabling quick deployment in voice-controlled end products.

Key Features

  • Pure offline speech recognition for 150 customizable local commands.
  • High-performance US516P6 chip with 240MHz core, DSP, and FPU.
  • Integrated FFT accelerator supports up to 1024-point complex FFT operations.
  • Onboard CH340C USB-serial chip for easy PC connection and firmware updates.
  • Runs a lightweight RTOS for efficient task management.
  • Simple and friendly PC-based tool for customizing voice command sets.
  • Status indication LEDs for wake-up and operational feedback.
  • Wide operating temperature range from -40°C to 85°C for robust applications.

Applications

  • Smart home automation and voice-controlled switches/outlets.
  • Voice interface for small household appliances (kettles, fans, lights).
  • Smart 86-box wall switches and sockets.
  • Interactive educational toys and robotic kits.
  • Voice-controlled LED lighting and lamp fixtures.
  • Industrial voice command panels for hands-free operation.

Technical Specifications

Core ProcessorUnisound US516P6 32-bit RISC @ 240MHz
Key FeaturesDSP Instruction Set, FPU, FFT Accelerator
Speech RecognitionOffline, 150 Commands
SRAM242KB
Flash Memory2MB
Supply Voltage5V via USB
Operating Current>500mA
InterfacesUART, I2C, PWM, DAC, GPIO
GPIO Pins5
Default UART Baud Rate115200 bps
Operating Temperature-40°C to 85°C
Storage Temperature-40°C to 125°C
Dimensions (Shipping)11 x 7 x 3 cm

Frequently Asked Questions

How do I program and communicate with the VC-01-Kit development board?

Connect the board to your computer via the onboard micro-USB port, which uses a CH340C chip for USB-to-serial conversion. Use a serial terminal program (like Putty or Arduino IDE Serial Monitor) set to 115200 baud to send and receive AT commands or debug output. For firmware updates, use the dedicated Unisound PC tool provided by AI-Thinker to flash new voice command sets or algorithm updates onto the module's 2MB flash memory.

What is the power requirement and how do I supply power to the VC-01 module?

The VC-01-Kit requires a stable 5V DC supply and draws over 500mA during active speech processing. The simplest method is to power it via the micro-USB port on the development board. For final product integration, you can supply 5V directly to the appropriate pins on the board's header, ensuring your power source can deliver sufficient current, especially during peak DSP and FFT accelerator operation when the 240MHz core is active.

Can I customize the offline voice commands, and what tools are needed?

Yes, you can fully customize the set of 150 offline commands. AI-Thinker provides a user-friendly PC configuration tool. You connect the board via USB, use the tool to record or import your trigger phrases, assign corresponding output actions (like toggling a GPIO or sending a UART string), and then flash the new configuration to the module. The process does not require traditional coding but involves setting up the command-response pairs within the tool's interface.

What peripheral interfaces are available for connecting sensors or actuators?

The VC-01 module exposes several interfaces through the development board's pin headers: a UART for serial communication (default 115200 baud), an I2C bus for connecting sensors, PWM outputs for controlling LEDs or motors, a DAC for analog output, and five general-purpose GPIO pins. These allow you to extend functionality, such as having a voice command trigger a relay via GPIO, read temperature from an I2C sensor, or send status data over UART to a main controller.

Package Includes

  • 1 x AI-Thinker VC-01-Kit Development Board

Additional Information

Weight 0.019 kg
Dimensions 7 × 11 × 3 cm