WS2811/12B support

[MathieuMH]

Hi guys!

Currently I'm very excited about the upcoming support for fadecandy. This seems to be a good solution for controlling a lot of WS2811/12B leds.
Recently a guy named Jeremy Graff wrote a lib to support WS2811/12B directly from the raspberry pi. So keeping this in mind I thought I share it with you. Might be interesting to implement this as well?
What do you think?

An basic implementation can be found here: https://learn.adafruit.com/neopixels-on-raspberry-pi/overview

Enjoy the holidays!

[nomis52]

The library is https://github.com/jgarff/rpi_ws281x

Looking at the code quickly, it appears to require root.

[sashabeep]

Also interested with that...

[peternewman]

See also https://groups.google.com/forum/#!topic/open-lighting/kMiO5pIJ5yk and http://git.stuge.se/spidev-ws2811_ws2812.git which doesn't look like it needs root.

[Osmii]

I really would like to see that also :D
Any proggres?

[nomis52]

Patches are welcome!

[bbx10]

I wrote up my experiment in driving ws281x LEDs using OLA and rpi-ws281x library. OLA does not run as root because a separate program runs an OPC server and drives the LEDs using rpi-ws281x. No changes are required to OLA since it has OPC client support. This is all experimental work so use with extreme caution.

http://x10linux.blogspot.com/2015/08/driving-ws281xs-leds-on-raspberry-pi.html

[ArosPrince]

bbx10: I just tried it. I just have one question. It does not work right away. I always have to launch strandtest.py, from ws281x lib then close it and then I can finally launch to opc server it starts to drive the LEDs. It seems to me that there may be some important initialization missing in the OPC server. Is that possible?

//also NODE is almost impossible to install. It took a a whole day and it is nowhere that simple as you describe it. Probably some apt-get update ruined the initial "simpleness".