Ai-Thinker NodeMCU-VC-01-KIT Offline Speech Recognition Module

Ai-ThinkerSKU: RB-Ait-01
Manufacturer #: NodeMCU-VC-01-Kit EN version

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  • Ai-Thinker NodeMCU-VC-01-KIT Offline Speech Recognition Module
  • Incorporates a CH340C serial port to USB chip
  • Features a wake-up light and cooling lamp
  • Utilizes the US516P6 voice chip for offline speech recognition
  • Supports DSP instruction set and FPU floating point operation unit
  • Provides a complete RTOS SDK for fast and convenient control protocol development

The Ai-Thinker NodeMCU-VC-01-KIT Offline Speech Recognition Module is a development board specifically designed for the VC-01 module. This development board incorporates a CH340C serial port to USB chip, which offers a basic debugging interface and a USB upgrade interface.

It also features a wake-up light and a cooling lamp, providing status indication and control instructions, thereby simplifying the debugging of control functions.

The VC-01 module is a cost-effective, purely offline speech recognition module developed by Shenzhen Ai-Thinker Technology Co., Ltd. The module utilizes the US516P6 voice chip, launched by Unisound, and continuously innovates and optimizes speech recognition technology algorithms. The offline recognition algorithm and chip architecture are deeply integrated to offer ultra-affordable offline speech recognition solutions.

This module can be extensively and swiftly implemented in various applications such as smart homes, a variety of smart small household appliances, boxes, toys, lamps, and other products that require voice control.

  • 1x Ai-Thinker NodeMCU-VC-01-KIT

  • 42.2 x 35.6 (±0.2) mm
  • Kernel: The device has a 32-bit RISC core running at 240 MHz. It supports DSP instruction set and FPU floating point operation unit
  • FFT Accelerator: The device supports up to 1024-point complex FFT/IFFT operations or 2048-point real FFT/IFFT operations
  • Unisound Customized Speech Algorithm Operator: The device is equipped with this feature
  • Storage: The device has built-in 242 KB high-speed SRAM and 2 MB FLASH
  • Audio Input and Output: The device supports flexible configuration with 1.8/2.8/3.3V IO. It has 1 analog Mic input with SNR≥94db. It also supports dual-channel DAC output and both Chinese and English voice commands
  • Power Supply and Clock: The device supports 5V power input. It has built-in 5V to 3.3V and 3.3V to 1.2V LDO to power the chip. It uses RC 12 MHz clock source and PLL locked loop clock source. It also has 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. The device has one full-duplex UART with a maximum rate of 3 Mbps. It also supports I2C DAC PWM and multiple interfaces
  • SDK: The device provides a complete RTOS SDK. It supports fast and convenient UART, I2C, and other control protocol development
  • Working temperature: -40 to 85 ℃
  • Storage environment: -40 to 125 ℃, < 90%RH
  • Power supply: Supply voltage 5 V, current greater than 500 mA
  • Interfaces: UART/I2C/PWM/DAC/GPIO
  • IO: 5 GPIOs
  • UART rate: UART1 default 115200 bps, UART0(IOB8) default 57600
  • Flash: 2 MB (built-in)
  • Support language: English and Chinese

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