Node-RED

Node-RED is a graphical programming tool based on blocks (nodes) which can be linked to each other. Most nodes have an input and an output. Each node can do a single task, it can evaluate or convert the input value.

Node-RED has also a module/plugin system, which add extra nodes with specific functionality.

I use it for all my automations.

• I read local sensors and camera’s, and based on these input values I act on it.
• I control actuators like lights, smart sockets, ESP’s or send notifications.
• I check online website for sales.
• I use external webservices to add extra functionality to my home automations.

I use this tool for a few years and created 100+ automations from all different types and there is no automation I couldn’t create with it!

For more information, check the website: https://nodered.org

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Cheat Sheets

Look at these Cheat Sheets where I described how you can convert values from one to another and example flows.

• Node-RED Cheat Sheet - Basic Nodes
• Node-RED Cheat Sheet - Function Node

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Example flows

Basic flows

Here you find some basic useful example flows to control light, act on temperatures, etc.

• Node-RED - Temperature flows

Node-RED + Home Assistant integration

Here you find flows to interact between Home Assistant and Node-RED.

• Node-RED - Home Assistant
• Node-RED - Send notifications to Home Assistant app

Average flows

• Node-RED - Check if meat must be defrosted for the meal of tomorrow

Advanced flows

Here you see an example of a script which I use to automatically control my ventilation system. You can read all the details about this project on the Control an Orcon mechanic ventilation system from Home Assistant page.

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Homepage | Home Assistant

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