Arch Linux

schmidtbag

Member

From: NH, USA

Registered: 2011-02-08

Posts: 337

5050 RGB LED Controller

I recently got myself a new Ryzen build, and the motherboard supports some RGB LED controllers.  Though it has its own built-in modes that you can change in BIOS, it also has a Windows tool that can also change it.  This suggests there is a way for the OS to communicate to the LEDs.  I was wondering if anybody knew how this could be done.  I thought maybe I could try to echo values to "/sys/class/gpio/" but there are no GPIO sub-folders.

Is there a way I can maybe probe for GPIO?  Or, maybe this isn't GPIO at all?

felipe

Member

Registered: 2013-06-29

Posts: 70

Re: 5050 RGB LED Controller

http://www.biostar.com.tw/upload/Mother … 324_12.jpg
Seems to be the normal 12v strip led connector, that is PWM, but is hard and they change all at the same time,
I don't know how to access it, I guess there should be something in /dev ? But you can do easy with a Arduino/nodemcu and ws2812 led strip

Last edited by felipe (2017-05-26 21:58:15)

schmidtbag

Member

From: NH, USA

Registered: 2011-02-08

Posts: 337

Re: 5050 RGB LED Controller

To my understanding, motherboard PWM signals are still treated as GPIO.  I personally haven't found anything in /dev that seems to have any relevance.