Due to regulatory requirements or lack of technology, there will be scenarios where human intervention is required to respond to sensor-generated alerts.
In this chapter, you are going to build a simple waste management system to elaborate this use case. Figure 10-1 shows a high-level diagram of all components involved in this system. The first component is an Arduino device that monitors garbage levels with a proximity sensor and publishes a message to an MQTT broker. The second component is a Node-RED flow that subscribes to an MQTT broker. The final component ...
