Development of MQTT Protocol-Based Sensor Data Subscription Using Raspberry-Pi as a Server Mode for IIoT Application

Deploying a Wireless Sensor Network (WSN) utilizing MQTT-based data transmission, with Raspberry Pi acting as the central broker, offers an effective and adaptable solution for gathering and managing sensor data. Within this framework, sensor nodes like ESP32 devices collect data from their surroundings and publish it to designated MQTT topics. The Raspberry Pi, configured as an MQTT broker, functions as the central nexus for receiving and organizing the sensor data. MQTT's publish-subscribe mechanism ensures smooth communication between the sensor nodes and the Raspberry Pi, facilitating real-time data transmission. Consequently, applications running on the Raspberry Pi or other connected devices can subscribe to pertinent topics to consume and process the sensor data. This method streamlines the integration of various sensors within a network and fosters the development of a versatile and responsive system for monitoring and analyzing data from distributed sensors, applicable in diverse fields such as environmental monitoring or industrial automation.