Abstract
Abstract: The Internet of Things (IOT) allows objects to connect over the internet in order to gather and exchange data. The hardwares Arduino, sensors, selectors, and internet comparability are commonly used in these devices. In this context, the MQTT is critical for exchanging data or information between devices in the Internet of Things without knowing one other's identities. This paper discusses various communication service models in the Internet of Things. Model A uses serial USB as a transmission medium, whereas Model B employs the Message Queuing Telemetry Transport protocol, which connects the system to the internet (ESP8266-12). The concept of author and subscriber is utilized in communication. A agent server is used to bring out or subscribe to messages. The agent is in-charge of disseminating messages to consumers based on the message topic. In MQTT, the agent is also known as the server. Mosquitto, Adafruit, and hiveMQ are some of the agents utilized in MQTT. We have demonstrated by the applications of triangulation network for NODE-MCU using co-operative communication using hardware with MQTT protocol.
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