Real-Time MQTT Message Listener
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Quickly set up n8n to listen for and receive messages from any MQTT topic in real-time. This workflow provides the essential trigger for ingesting data streams from IoT devices, microservices, or other event-driven systems. It's the perfect starting point for building powerful, automated responses to your MQTT data.
About This Workflow
The MQTT protocol is a lightweight, publish-subscribe messaging transport popular in IoT, mobile, and embedded environments due to its efficiency and real-time capabilities. This n8n workflow simplifies the process of integrating MQTT messages into your automated workflows. By utilizing the MQTT Trigger node, you can effortlessly subscribe to any specified topic and instantly receive incoming data. This serves as the critical initial step for countless automation scenarios, allowing you to transform raw MQTT data into actionable insights, trigger subsequent actions, or store information in various databases. It's a foundational component for robust, event-driven architectures.
Key Features
- Real-time Data Ingestion: Instantly receive messages as they are published to your subscribed MQTT topics.
- Secure Credential Handling: Safely manage your MQTT server connection details using n8n's robust credential system.
- Foundation for Automation: Acts as the critical starting point for building complex workflows that react to MQTT events.
- Wide Applicability: Ideal for IoT data streams, microservice communication, and event-driven architectures.
How To Use
- Add the MQTT Trigger Node: Drag and drop the 'MQTT Trigger' node onto your n8n canvas.
- Configure Credentials: Click on the node and set up your MQTT credentials. You'll need to provide your MQTT broker URL (e.g.,
mqtt://your-broker.com:1883) and any necessary authentication details (username, password). - Specify Topic: In the node's parameters, enter the specific MQTT topic you wish to subscribe to (e.g.,
sensors/temperature/livingroom). You can use wildcards (e.g.,sensors/#) for broader subscriptions. - Activate Workflow: Save and activate your workflow to start listening for incoming messages.
- Add Subsequent Nodes: Connect additional nodes (e.g., 'Function', 'If', 'HTTP Request', 'Google Sheets') to process, filter, or act upon the data received from the MQTT topic.
Apps Used
Workflow JSON
{
"id": "76bbc656-471c-4a78-a42e-fe269dc7d38d",
"name": "Real-Time MQTT Message Listener",
"nodes": 15,
"category": "DevOps",
"status": "active",
"version": "1.0.0"
}Note: This is a sample preview. The full workflow JSON contains node configurations, credentials placeholders, and execution logic.
Get This Workflow
ID: 76bbc656-471c...
About the Author
DevOps_Master_X
Infrastructure Expert
Specializing in CI/CD pipelines, Docker, and Kubernetes automations.
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