Desarrollo e implementación un sistema IoT embebido en el microcontrolador Esp32 para la gestión de sensores y actuadores en modo AP (Punto de acceso) y STA (Estación)

Abstract

Development and Implementation of an Embedded IoT System on the ESP32 Microcontroller for Sensor and Actuator Management in AP (Access Point) and STA (Station) Modes This project, led by the Ciberondas research group of the Computer Engineering program at Universidad Santo Tomás, is framed within the growing relevance of the Internet of Things (IoT), which has transformed interactions with devices and environments. The main objective was to design an IoT system based on the ESP32 microcontroller, capable of efficiently managing sensors and actuators while adapting to different connectivity environments through access point (AP) and station (STA) operating modes. The methodology included integrating a REST API to facilitate communication between the ESP32 and external services, as well as implementing the MQTT protocol compatible with the EMQX broker in both local and cloud environments. The user interface was developed using HTML, CSS, and JavaScript, implemented in a web dashboard that enables real-time monitoring and control of the system. The hardware incorporated high-precision sensors such as the DHT22 and DS18B20, along with actuators like LEDs and relays, while the software employed specialized libraries for Wi-Fi connectivity management and web server functionality. The results highlighted the versatility and efficiency of the proposed system, demonstrating its ability to adapt to diverse scenarios and requirements. This project makes a significant contribution to the IoT field by providing a robust, flexible, and scalable platform, ideal for applications requiring real-time monitoring and control across multiple contexts.