VC-02-Kit AI Intelligent Offline Speech Module Offline Recognition Speech Control Module Development Board
 
VC-02-Kit
The VC-02-Kit is a development board designed for the VC-02 module.
The development board integrates CH340C serial port to USB chip, providing basic debugging interface and USB upgrade interface, design of wake up light and cold and cooling lamp, provides status indication and control instructions, and easy to debug the simple control function.
VC-02 is a low-cost pure offline speech recognition module. 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 home, 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, RTOS lightweight system, rich peripheral interfaces, and simple and friendly custom tools.
 
1.Characteristic
 ◼ Kernel 
 32bit RISC core, running at 240MHz 
Support DSP instruction set and FPU floating point operation unit 
FFT Accelerator: Support up to 1024-point complex FFT/IFFT operations, or 2048-point real FFT/IFFT operations 
Unisound customized speech algorithm operator 
◼ Storage 
 Built-in 242KB high-speed SRAM 
Built-in 2MB FLASH 
◼ Audio input and output 
Flexible configuration supports 1.8/2.8/3.3V IO 
Support for a 1 analog Mic input, SNR≥94db 
Support dual-channel DAC output 
Support for both Chinese and English voice commands 
◼ Power supply and clock 
Support 5V power input 
Built-in 5V to 3.3V, 3.3V to 1.2V LDO to power the chip 
RC 12MHz clock source and PLL locked loop clock source 
Built-in POR (Power on Reset), low voltage detection and watchdog 
◼ Peripheral 
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 
◼ SDK 
 Provides complete RTOS SDK
Support fast and convenient UART, I2C and other control protocol development
 
Serial Port Flashing Kit
Serial Port Flashing is the USB flashing method (the module needs an external TTL to USB module to connect to TX1 and RX1), the firmware file name used must be: uni_ app_ _release_ update.bin (Note: "uni app_ release.bin" cannot be used renaming), be sure to use the "build.sh update" command to compile and generate
 
Resouces:
1. VC-02-Kit Specification
2. How to Use the VC-02 Kit Offline Voice Recognition Module to Add Voice Control to Your Projects(Youtube video)
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