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Node RED for Smart Home Automation: A Practical Beginner's Guide to Building Visual IoT Workflows, Connecting MQTT Devices, Automating Home Assistant,
Paperback
General ComputersIndustrial DesignNetworking
Publisher: Independently Published
Published: Aug 19 2026
Pages: 170
Weight: 0.47
Height: 0.43 Width: 6.00 Depth: 9.00
Language: English
Smart devices become truly useful when they work together. The challenge is creating automations that remain understandable, reliable, and easy to change as your home grows.
Node RED for Smart Home Automation gives beginners a practical path to building visual automation workflows that connect sensors, MQTT devices, Home Assistant entities, timers, conditions, notifications, and household routines into dependable smart systems.
Instead of hiding automation logic inside large scripts, Node RED lets you see how information moves from an event to a decision and finally to an action. You will learn to design those flows clearly, test them step by step, and troubleshoot them when real devices do not behave exactly as expected.
The book begins with the foundations of event driven automation. You will learn how nodes, wires, messages, payloads, flow tabs, and configuration nodes work before building your first practical flows in the modern Node RED editor.
From there, you will learn how to:
- Build clear event driven automation pipelines
- Install and run Node RED on computers, Raspberry Pi, Docker, and compatible Home Assistant systems
- Work with messages, payloads, JSON, objects, arrays, and data types
- Route decisions with Switch nodes
- Transform information with Change nodes and JSONata
- Use Function nodes when JavaScript is genuinely useful
- Store selected information with node, flow, and global context
- Connect Node RED to an MQTT broker
- Design understandable topic structures
- Work with QoS, retained messages, availability information, and JSON payloads
- Control devices through command and state topics
- Connect directly to Home Assistant entities, states, events, and actions
- Create motion and presence aware lighting
- Combine occupancy, time, sunrise, sunset, and household modes
The practical projects emphasize real household behavior rather than simple demonstrations. You will create lighting that considers occupancy and ambient conditions, handle manual overrides so automation does not fight the people using the room, monitor environmental data through MQTT, detect sustained abnormal readings, and generate useful notifications.
The final project chapter combines the book's techniques into three larger systems: an intelligent room automation, an MQTT environmental monitoring and alert system, and a whole home Away mode. These projects integrate presence, lighting, climate, security checks, notifications, device state, validation, timers, and recovery behavior.
Reliability is treated as part of the design process. You will learn to assume that devices sometimes disconnect, values arrive in the wrong format, services time out, manual controls are used, and automation runtimes restart. The manuscript therefore teaches testing, failure handling, persistent state, logging, backup, and recovery alongside ordinary flow building.
No advanced programming background is required. The early chapters can be completed with simulated messages, while later exercises can incorporate real MQTT devices and Home Assistant installations.
Move beyond isolated smart devices. Build visual automations you can understand, troubleshoot, maintain, and trust.
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