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
-
Wayland 1.24 Released with Fixes and New Features
Wayland continues to move forward, while X11 slowly vanishes into the shadows, and the latest release includes plenty of improvements.
-
Bugs Found in sudo
Two critical flaws allow users to gain access to root privileges.
-
Fedora Continues 32-Bit Support
In a move that should come as a relief to some portions of the Linux community, Fedora will continue supporting 32-bit architecture.
-
Linux Kernel 6.17 Drops bcachefs
After a clash over some late fixes and disagreements between bcachefs's lead developer and Linus Torvalds, bachefs is out.
-
ONLYOFFICE v9 Embraces AI
Like nearly all office suites on the market (except LibreOffice), ONLYOFFICE has decided to go the AI route.
-
Two Local Privilege Escalation Flaws Discovered in Linux
Qualys researchers have discovered two local privilege escalation vulnerabilities that allow hackers to gain root privileges on major Linux distributions.
-
New TUXEDO InfinityBook Pro Powered by AMD Ryzen AI 300
The TUXEDO InfinityBook Pro 14 Gen10 offers serious power that is ready for your business, development, or entertainment needs.
-
LibreOffice Tested as Possible Office 365 Alternative
Another major organization has decided to test the possibility of migrating from Microsoft's Office 365 to LibreOffice.
-
Linux Mint 20 Reaches EOL
With Linux Mint 20 at its end of life, the time has arrived to upgrade to Linux Mint 22.
-
TuxCare Announces Support for AlmaLinux 9.2
Thanks to TuxCare, AlmaLinux 9.2 (and soon version 9.6) now enjoys years of ongoing patching and compliance.