MQTT Broker

The first step in the software design was setting up the MQTT broker. The broker acts as a middleware between the microcontroller and the backend. The chosen broker is AWS Core Iot, AWS provides the ability to create topics that different devices can publish or subscribe.

Once the broker was successfully set up the ESP 32 microcontroller was able to publish events to a topic, and these events were correctly displayed on the AWS Core Iot dashboard.