ESP8266 Community Forum

- Mon Jan 26, 2015 4:40 pm #8269 I successfully tested your code with some WS2812B leds (Neopixels) and Nodemcu (sdk 0.9.5 + your suggested changed to gpio.c). Thanks for the code, now I have an wifi-rgb-led-string with just an ESP8266 and WS2812B leds.

Any reason why you deviated from the original timing created by cnlohr? I tried both timings, they both work with my Neopixels. Theoretically, the timing of cnlohr is a bit faster.

What kind of work is needed to get this code into the nodemcu firmware?
If I can help out, please let me know.

- Tue Jan 27, 2015 1:25 am #8290 I would like to stream ambilight like data to a strip of rgb leds. up to how many leds can be addressed with the existing implementations?

- Tue Jan 27, 2015 1:36 am #8292

now I have an wifi-rgb-led-string with just an ESP8266 and WS2812B leds.

That was the idea behind it, yes

Any reason why you deviated from the original timing created by cnlohr?

The timing it not *that* critical, as everyone it moaning about. However, I took the timings from the excellent blog whose URL is given at the beginning of my code. At the end of that article there is a link to another entry "Why you should give your bits room to breathe"[1]. Read it. It has to do with the signal re-shaping each LED does.

What kind of work is needed to get this code into the nodemcu firmware?

I don't know. zeroday is free to add this code to the official code base. Maybe he would be more motivated, if you fork it on github and make a pull request for him. Maybe it would also be preferred, if the code would not be added to gpio.c but if it would be located in its own ws2812.c module.[/quote]

[1] http://wp.josh.com/2014/05/16/why-you-s ... o-breathe/

- Wed Jan 28, 2015 9:02 pm #8428 The bin file you posted doesn't seem to be working for me - I get a bunch of serial garbage on startup (both at 9600 and 115200 baud) and it's unresponsive after that. I'm using nodemcu-flasher with the bin file starting at 0x10000.

Am I doing something wrong?