Live Temperature Monitoring System Using MQTT

The Message Queue Telemetry Transport (MQTT) protocol has been used to create an Internet of Things (IoT) monitoring system that displays temperature and humidity values within a room. A well-known internet-based communication protocol called MQTT was chosen for the experiment, where it is used to send data on temperature and humidity. This experiment intends to test the sensor's functionality and the MQTT protocol's applicability in a variety of specially designed test rooms. The purpose of these settings, which include cold, normal, and heat, is to determine how well the sensor functions under each one.The monitoring system includes DHT11 humidity and temperature sensors, which produce data displaying the current humidity and temperature levels. The Node MCU microcontroller, which has the capacity to connect to the internet via a Wi-Fi network, receives this data after that. Broker.mqttdashboard.com has been selected as the MQTT broker for this system. With MQTT Box for laptops and the MQTT Dashboard app for Android, it is possible to monitor temperature on a laptop and an Android device.This system's data collection offers insights into three different temperature and humidity situations. The typical temperature and humidity levels in cold weather are 15.0°C and 69.39%, respectively. The average temperature and humidity rise to 31.3 °C and 87.9 % under normal circumstances. The average temperature and humidity levels increase to 40.65°C in hot weather.