This course is designed for learners who have mastered the basic development methods of the ESP32 to progressively study low-power design → Wi-Fi networks → REST APIs → Web Servers → MQTT → OTA → Bluetooth BLE, with the goal of directly implementing the communication functions required for real-world IoT devices. The main goals of this course are as follows: - Understand and utilize low-power features of the ESP32, such as Light Sleep and Deep Sleep - Configure Wi-Fi Station/AP modes and handle network connections and exceptions - Implement communication with external servers using HTTP/HTTPS and REST APIs - Configure a Web Server and WebSocket server within the ESP32 - Host websites and React-based UIs directly on the ESP32 - Implement MQTT-based Publish/Subscribe communication - Perform remote firmware updates and version management using OTA - Understand the GAP/GATT structure of Bluetooth BLE based on NimBLE and implement Server/Client functionality

This course aims to help learners who are new to ESP32 and IoT development master everything from environment setup and language basics to hardware control and RTOS utilization. The main objectives of this course are as follows: - Acquire the ability to use the ESP32 development environment and basic tools - Understand the C language and ESP-IDF structure - Understand FreeRTOS tasks and basic synchronization methods - Enable hardware control through GPIO, I2C, SPI, and UART - Understand storage and memory structures and implement simple persistent data storage