Ai-Thinker VC-02 Offline Speech Recognition Control Module
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Ai-Thinker VC-02 Offline Speech Recognition Control Module The VC-02-Kit is a development board for the Voice Recognition Module, sharing the same design as the VC-01-Kit. It features an integrated CH340C USB-to-serial chip for debugging and upgrading, with added functionality like wake-up light, cold, and cooling lamp control, along with status indicators for easy debugging and control. Developed by Shenzhen Ai-Thinker Technology Co., Ltd., the VC-02 is a cost-effective offline speech recognition module that uses the US516P6 voice chip from Unisound. This chip offers a deep integration of offline recognition algorithms, providing an ultra-low-cost speech recognition solution. It is ideal for smart homes, small household appliances, 86 boxes, toys, lamps, and more, enabling voice control. The US516P6 chip features a 32-bit RISC architecture, DSP instructions for signal processing, an FPU unit for floating-point operations, and an FFT accelerator. The VC-02 Voice Recognition Module supports 150 local offline commands and a lightweight RTOS system, making it easy to customize with a variety of peripheral interfaces. Features All GPIOs can be set up as external interrupt inputs and wake-up sources One full-duplex UART with a maximum speed of 3Mbps Supports I2C, DAC, PWM, and multiple interfaces Includes 242KB of high-speed SRAM Equipped with 2MB FLASH memory Dual-channel DAC output support 32-bit RISC core running at 240MHz Supports DSP instruction set and FPU for floating-point operations
- Supports 150 offline voice commands
- 32-bit RISC core @ 240MHz with DSP & FPU
- UART up to 3Mbps, I2C, DAC, PWM interfaces
- 2MB FLASH + 242KB SRAM
- Compatible with Arduino & Raspberry Pi
- CH340C USB-to-serial for easy programming
- Offline speech recognition without cloud dependency
- Ultra-low power consumption with wake-up interrupt support
- Dual-channel DAC output for audio feedback
- Lightweight RTOS for real-time response
- Easy integration with microcontrollers
- Onboard status LEDs and control interfaces
| Item Type | AI and Voice Module |
|---|---|
| Model | Ai-Thinker VC-02-Kit |
| Supply Voltage (V) | 5 |
| Current (mA) | 500 |
| Weight (g) | 19 |
| Dimensions (LxWxH) | 4.5 × 3.1 × 1 cm |
How many voice commands does the VC-02 support?
The VC-02 supports up to 150 offline voice commands stored locally on its 2MB FLASH memory.
Is the VC-02 compatible with Arduino or Raspberry Pi?
Yes, the VC-02 can be interfaced with Arduino and Raspberry Pi via UART or I2C for voice-controlled projects.
Does the VC-02 require internet connectivity?
No, the VC-02 operates completely offline using the embedded US516P6 chip for local speech recognition.
What is the maximum UART communication speed?
The VC-02 supports full-duplex UART communication at speeds up to 3Mbps.
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About Ai-Thinker VC-02 Offline Speech Recognition Control Module by Ai-Thinker
Shop Ai-Thinker VC-02 offline voice control module. Compatible with Arduino & Raspberry Pi. Ideal for smart home automation.
Categorised under: Basic Components› Electronic Modules› AI Hardware