Store Arduino sensor network data in an SQL database
Arduino Calling SQL
© Lead Image © 3355m, 123RF.com
If you need to store long-term historical data, you can cobble together some Arduino modules, sensors, and displays and get them all to talk to an SQL server.
In most Arduino projects, devices use messaging protocols like Message Queuing Telemetry Transport (MQTT) [1] or custom dashboard platforms such as Arduino Cloud [2] or ThingsBoard [3] to talk to each other. While those two approaches offer excellent solutions for viewing short-term sensor data, they have limitations when used for long-term historical storage.
A common solution that supports historical storage is to connect MQTT brokers to data-logging packages like Node-RED, InfluxDB, or Grafana. Another approach is to install SQL drivers on the Arduino controllers and then pass sensor data directly to a database server. There are Arduino C/C++ libraries for MariaDB/MySQL, Microsoft SQL, PostgreSQL and even local SQLite 3 databases. SQL-based solutions have some useful benefits such as:
- No intermediate storage is required
- Access raw historical data or aggregate calculations
- Write custom queries
- Use back-end views and procedures to minimize dashboard code
[...]
Buy this article as PDF
(incl. VAT)
Buy Linux Magazine
Subscribe to our Linux Newsletters
Find Linux and Open Source Jobs
Subscribe to our ADMIN Newsletters
Support Our Work
Linux Magazine content is made possible with support from readers like you. Please consider contributing when you’ve found an article to be beneficial.
News
-
Nitrux 6.0 Now Ready to Rock Your World
The latest iteration of the Debian-based distribution includes all kinds of newness.
-
Linux Foundation Reports that Open Source Delivers Better ROI
In a report that may surprise no one in the Linux community, the Linux Foundation found that businesses are finding a 5X return on investment with open source software.
-
Keep Android Open
Google has announced that, soon, anyone looking to develop Android apps will have to first register centrally with Google.
-
Kernel 7.0 Now in Testing
Linus Torvalds has announced the first Release Candidate (RC) for the 7.x kernel is available for those who want to test it.
-
Introducing matrixOS, an Immutable Gentoo-Based Linux Distro
It was only a matter of time before a developer decided one of the most challenging Linux distributions needed to be immutable.
-
Chaos Comes to KDE in KaOS
KaOS devs are making a major change to the distribution, and it all comes down to one system.
-
New Linux Botnet Discovered
The SSHStalker botnet uses IRC C2 to control systems via legacy Linux kernel exploits.
-
The Next Linux Kernel Turns 7.0
Linus Torvalds has announced that after Linux kernel 6.19, we'll finally reach the 7.0 iteration stage.
-
Linux From Scratch Drops SysVinit Support
LFS will no longer support SysVinit.
-
LibreOffice 26.2 Now Available
With new features, improvements, and bug fixes, LibreOffice 26.2 delivers a modern, polished office suite without compromise.