How to Use:
The demo firmware supports voice wake‑up words: Xiaoke Xiaoke, Xiaoling Xiaoling, Hello Lamp, Xiaohai Xiaohai.
1. Use the USB data cable to supply power to the test board, and connect external speakers and microphones.
2. After the module wakes up, use the order word "turn on the air conditioner", the bottom D4 will light up, corresponding to the B7 pin on the module, use the order word "turn off the air conditioner", and the D4 light will go out.
3. Use the order word "turn on the light", the bottom plate D3 will light up, corresponding to the B6 pin on the module, use the order word "turn off the light", and the D3 light will go out.
4. Use the order word "Turn on the switch", the bottom plate D2 will light up, corresponding to the B2 pin on the module, use the order word "Turn off the switch", and the D2 light will go out.
5. Only the above 3 pins are active in the factory demo firmware, and none of the other pins are active.

Specification:
Item Type: Voice Recognition Module
Material: PCB
Model: HLK-V20
Working Voltage: DC 5V (USB Power Supply)
Audio Input and Output:
Support 1 Analog Microphone Input
Support Dual Channel Dac Output
Support I2s Input Output
Purpose: for Speech Recognition
Applicable Scenarios: Used in Smart Homes, All Kinds of Smart Home Appliances, 86 Boxes, Toys, Lamps, Industrial, Internet of Things, Automobiles, Security and Lighting, and Other Products That Require Voice Control

Package List:
1 x Voice Recognition Module
1 x Pin Header