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
US / Canada
UK / Australia
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
-
Happy Birthday, Linux
On August 25, Linux officially turns 34.
-
VirtualBox 7.2 Has Arrived
With early support for Linux kernel 6.17 and other new additions, VirtualBox 7.2 is a must-update for users.
-
Linux Mint 22.2 Beta Available for Testing
Some interesting new additions and improvements are coming to Linux Mint. Check out the Linux Mint 22.2 Beta to give it a test run.
-
Debian 13.0 Officially Released
After two years of development, the latest iteration of Debian is now available with plenty of under-the-hood improvements.
-
Upcoming Changes for MXLinux
MXLinux 25 has plenty in store to please all types of users.
-
A New Linux AI Assistant in Town
Newelle, a Linux AI assistant, works with different LLMs and includes document parsing and profiles.
-
Linux Kernel 6.16 Released with Minor Fixes
The latest Linux kernel doesn't really include any big-ticket features, just a lot of lines of code.
-
EU Sovereign Tech Fund Gains Traction
OpenForum Europe recently released a report regarding a sovereign tech fund with backing from several significant entities.
-
FreeBSD Promises a Full Desktop Installer
FreeBSD has lacked an option to include a full desktop environment during installation.
-
Linux Hits an Important Milestone
If you pay attention to the news in the Linux-sphere, you've probably heard that the open source operating system recently crashed through a ceiling no one thought possible.