DMX with the Kunbus Revolution Pi Core 3+
Party Lights

© Photo by Sam Moqadam on Unsplash
The DMX protocol for controlling lighting technology has its roots in stage and event technology, but it can also be used in home automation. We show you how to control DMX devices with the Revolution Pi module.
In principle, digital multiplex (DMX) technology lets you control all DMX devices through a simple and robust bus. DMX uses the RS-485 specification (i.e., asynchronous serial transfer) for data transmission. The signal is transmitted over two lines simultaneously with inverted voltage levels (±5V).
This type of data transfer is resistant to external interference signals and theoretically allows line lengths of up to 1,200 meters. However, the data transmission rate decreases with increasing line length. Up to a distance of 10 meters, a maximum data rate of 10Mbps can be achieved over RS-485.
DMX works with a data rate of 250Kbps by default; a DMX network is built of strings. One string can contain up to 32 DMX receivers. More receivers require the use of a repeater to extend the network. Network branches are implemented with special splitters. Extremely robust, three-pole XLR (Cannon) connectors are used to connect all DMX devices, which is ideally suited for stage use.
[...]
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
-
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.
-
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.