Bluetooth Low Energy for the Raspberry Pi
Wireless Saver
© Lead Image © Teerapat Seedafong, 123RF.com
Bluetooth Low Energy is ideal for networking battery-powered sensors. We show you how to use it on the Raspberry Pi.
Bluetooth LE, or BLE for short, comes with a whole new world of terms on top of the new technology. Before getting started with some practical examples, I first need to discuss the theoretical background. Without all of this BLE speak, you can't evaluate the many application examples available on the web and adapt them to your needs.
Bluetooth is a short-range technology for use between two devices [1]. Before a connection is established, a system can be either a peripheral device or a central device. Powerful devices such as PCs, tablets, and laptops can assume both roles, while less powerful devices are limited to the peripheral role.
Each peripheral sends advertisements at regular intervals, such as "I am sensor ABC and provide heart rate data." Alternatively, the message could be: "I am sensor XYZ and would like to know the current time." Heart rate and current time are services. Both of them are standardized, but manufacturers are free to use their own proprietary services. More about that later.
[...]
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
-
Plasma Bigscreen Returns
A developer discovered that the Plasma Bigscreen feature had been sitting untouched, so he decided to do something about it.
-
CachyOS Now Lets Users Choose Their Shell
Imagine getting the opportunity to select which shell you want during the installation of your favorite Linux distribution. That's now a thing.
-
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.