Ai-Thinker NodeMCU-VC-02-KIT Offline Speech Recognition Module

Ai-ThinkerSKU: RB-Ait-02
Manufacturer #: NodeMCU-VC-02-Kit EN version

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  • 1x Ai-Thinker NodeMCU-VC-02-KIT
  • 42.2 x 35.6 (±0.2) mm
  • Kernel: The product features a 32-bit RISC core running at 240 MHz. It supports DSP instruction set and FPU floating point operation unit
  • FFT Accelerator: The product supports up to 1024-point complex FFT/IFFT operations or 2048-point real FFT/IFFT operations
  • Unisound Customized Speech Algorithm Operator: The product includes a customized speech algorithm operator developed by Unisound
  • Storage: The product has a built-in 242 KB high-speed SRAM and 2 MB FLASH
  • Audio Input and Output: The product offers flexible configuration options for 1.8/2.8/3.3V IO. It supports 1 analog Mic input with a SNR≥94db and dual-channel DAC output. It also supports both Chinese and English voice commands
  • Power Supply and Clock: The product supports 5V power input and has a built-in 5V to 3.3V, 3.3V to 1.2V LDO to power the chip. It uses an RC 12 MHz clock source and PLL locked loop clock source. It also includes 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 product includes one full-duplex UART with a maximum rate of 3 Mbps. It also supports I2C DAC PWM and multiple interfaces
  • SDK: The product provides a complete RTOS SDK and 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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