ws2812b LED stips

[rausch88]

Hy

Did someone tried to use an LED strip of WS2812B LEDs with an Raspbery and Windows?
Or do you have an idea how that can work?

Thanks for your answers.

[DougieLawson]

Get it running with Linux by following http://popoklopsi.github.io/RaspberryPi-LedStrip/#/

Then to run it with Win10 IoT all you'll need to do is amend the supplied "Blinky" sample program to drive three GPIO pins rather than one.

[mikronauts]

Sorry, won't work for the OP as he was asking about WS2812 programmable LED's

The timing for those is insanely tight, I am not convinced a Pi could drive them (well, maybe with DMA and large memory buffer)

Easiest way: use an external microcontroller (AVR, PIC, Propeller) to do the crazy timing, and talk to it over serial.

I use Propellers to drive WS2812's, but I've seen Arduino's drive them too.

Get it running with Linux by following http://popoklopsi.github.io/RaspberryPi-LedStrip/#/

Then to run it with Win10 IoT all you'll need to do is amend the supplied "Blinky" sample program to drive three GPIO pins rather than one.

[Douglas6]

The timing for those is insanely tight, I am not convinced a Pi could drive them (well, maybe with DMA and large memory buffer)

It can be done; there's a good write-up here: https://learn.adafruit.com/neopixels-on ... i/overview. Apparently using DMA and a large memory buffer. They do warn that it may not work on the Pi2B, and I have no idea if the code could be ported to Win10 IoT.

[mikronauts]

Thanks - I will check out the writeup!

Re/ Win10IoT... it would have to give an API for setting up a large DMA buffer, with the correct timing, then it should work there as well.

The timing for those is insanely tight, I am not convinced a Pi could drive them (well, maybe with DMA and large memory buffer)

It can be done; there's a good write-up here: https://learn.adafruit.com/neopixels-on ... i/overview. Apparently using DMA and a large memory buffer. They do warn that it may not work on the Pi2B, and I have no idea if the code could be ported to Win10 IoT.