Desenvolvimento de plataforma para automação residencial com dispositivos inteligentes utilizando protocolo MQTT e node-RED

Abstract

This work presents the development of a home automation platform capable of managing and monitoring devices via the internet. Initially, the MQTT communication protocol that was used in this project is presented, after that, the Node-RED development platform is presented, which presents good integration with the chosen protocol, Node-RED was used both for the creation of the user interface and for the processes of data treatment and storage in a database or on the computer itself. The devices used in this platform were a smart switch, a temperature/humidity monitor and a smart socket, the first two use the ESP8266 microcontroller and the last one uses the ESP32. The user interface created proved to be simple and functional, it is possible to control both the switch and the smart socket and view the history of the data in relation to time, in addition the data is also saved on the computer in "csv"format. The platform was also integrated with the Alexa voice assistant. Therefore, from the results and the development, it is possible to evidence that the set MQTT and Node-RED presents itself as an easy-to-apply, efficient and generalist solution, which can be applied to different types of projects, from a simple home automation project to monitoring a photovoltaic plant.