SuperHouse #41: Datalogging with MQTT, Node-RED, InfluxDB, and Grafana
2 min read
4 months ago
Published on May 08, 2024
This response is partially generated with the help of AI. It may contain inaccuracies.
Table of Contents
Step-by-Step Tutorial: Setting up Data Logging System with MQTT, Node-RED, InfluxDB, and Grafana
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Setting up Raspberry Pi:
- Install Raspberry Pi OS (formerly Raspbian) using Raspberry Pi Imager on an SD card.
- Connect the Raspberry Pi to the network.
-
Installing MQTT Broker (Mosquitto):
- Install the MQTT broker and client using
apt
package manager. - Set up a username and password for security.
- Restart the MQTT broker to apply the new configuration.
- Install the MQTT broker and client using
-
Installing InfluxDB:
- Add the InfluxDB repository key and install InfluxDB using
apt
. - Configure InfluxDB by setting a password and enabling authentication.
- Create a database in InfluxDB to store sensor data.
- Add the InfluxDB repository key and install InfluxDB using
-
Setting up Node-RED:
- Install Node-RED using the official installation script.
- Configure Node-RED to automatically start on boot.
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Connecting MQTT and InfluxDB in Node-RED:
- Subscribe to MQTT topics in Node-RED to receive sensor data.
- Use InfluxDB nodes in Node-RED to store the received data in the database.
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Creating Dashboards with Grafana:
- Install Grafana by adding the official repository and installing the package.
- Configure Grafana to connect to InfluxDB as a data source.
- Create a dashboard in Grafana and add panels to visualize sensor data.
- Customize the appearance of charts and widgets in Grafana.
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Advanced Data Handling with Node-RED:
- Parse JSON data in Node-RED to extract and store individual values.
- Create multiple queries in Node-RED to store different sensor data in InfluxDB.
- Use Debug nodes in Node-RED to trace and manipulate message payloads.
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Customizing Grafana Dashboards:
- Arrange widgets and panels on the Grafana dashboard.
- Set thresholds and visualizations for different sensor values.
- Save and manage different dashboards for various purposes.
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Optimizing Software Stack with Telegraph:
- Consider using Telegraph as a front end for Grafana to simplify the software stack.
- Evaluate the need for Node-RED and MQTT based on specific project requirements.
- Build custom dashboards and automation systems using the established setup.
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Finalizing and Saving Configurations:
- Save the Grafana dashboard to retain settings and configurations.
- Share and explore creative uses of the data logging system for automation projects.
By following these steps, you can set up a comprehensive data logging system using MQTT, Node-RED, InfluxDB, and Grafana for monitoring and visualizing sensor data in your IoT projects.