English vocabulary learning tool

Project Name:
English Vocabulary Learning Tool
Project Requirements:
This tool is primarily for English reading and listening. Therefore, it utilizes an ESP32 and HLK_V20 to create a simple tool (a little toy) for reading and listening to words.
The main design includes four functions: sequential learning, random learning, sequential recognition, and random recognition.
MQTT allows setting the learning mode, maximum random number value, and recording learning duration and the number of words learned during testing.

Overall Design Scheme Block Diagram
Schematic Diagram Design Description
Software
Description: The software is nothing special; it mainly uses the Arduino IDE for development and related libraries.
Physical Demonstration Description
Notes
: For the main hardware, the serial port output of the voice module should ideally include a header and footer to prevent misinterpretation and inconsistent output.