Learning Objectives
At the end of this theory note, trainees must be able to:
- Explain Node-RED’s core concepts: nodes, wires, flows, and the msg object.
- Construct a data flow that ingests MQTT messages and processes them.
- Configure function, switch, and change nodes to transform, filter, and route data.
- Design a real-time dashboard using appropriate visualisation widgets.
- Test and debug flow logic using debug nodes.
- Deploy and document a completed flow and dashboard.
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