Voice assistant based on HLK-V20 speech recognition module

This project is a voice assistant developed based on Hailingke's HLK-V20 voice module DEMO board. It can help you turn on and off lights, fans, air conditioners, etc., with a total of 57 commands.

This is the voice module DEMO board that Hailingke sent for free a long time ago. After trying it, the recognition rate is still very high. Because it is a DEMO, the voice commands are built-in at the factory and cannot be changed or programmed. But it can barely be used. TB is now 9.9 Free shipping.

The voice module does not require any peripheral circuits. It can work just by connecting the power speaker MIC. This project adds a microcontroller to analyze the data output from the serial port of the voice module to control various relays and cooperate with this power board   https://oshwhub.com/ Kirito/ATXdian-yuan-zhuai-jie-ban   controls the main power switch, etc., which can perfectly meet the needs of daily workbench.

At present, the attached programs are basic switching lights and switching power supplies. There are also programs that add infrared circuits to remotely control the air conditioner. However, it is difficult to obtain the identification code of the air conditioner (actually I am lazy). Friends with hands-on skills can continue to improve, including Add control circuits such as fans.

All the information has been uploaded in the attachment, and the actual DEMO usage effect can be seen in the video.

PCB:

actual use: