RGBW Pure White Does'nt work adding 6th LED output

[chybeat]

What happened?

After add 6th LED output in settings, the fisrt strip (112 leds SK6812) white color dows not work, adding 5 with 184 LEDs works like a charm. Even changing the last strip (18 LED strip to another with 28 LEDs) works fine, the problem comes with 6th.

Project is a computer case with a lot of fans and a strip with this configuration: (WLED 0.15.0-b1 and prior versions works fine)

1 light strip with 112 LED (SK6812 strip) (GPIO 15)
5 ARGB fans with 18 LEDs (WS2812B strips) (GPIO 15, 26, 5, 14, 16)
1 CPU Cooler with 11 LEDs (WS2812B strip) (GPIO 13)
1 ARGB fan with 21 LEDs (WS2812B strip) (GPIO 4)
2 ARGB fans with 28 LEDs (WS2812B strips) (GPIO 12, 2)

WLED config has the above exact order, I test one 28 LED strip in 5th Output to verify if number of leds is the problem. In 4th position i have 176 LEDs, after adding th 5th with 18 LEDs strip are 184, whan change to 28 LED strip are 194, i think the problem was (may be, for any reason, because thins can happend) a 200 led limit, but no, the problem is when add 6th output.

To Reproduce Bug

1. Add 1st LED output with SK6812 strip (112 LED for my setup)
2. Add 4 more strips (WS2812B strip with 18 LEDs in my setup). White channel works fine
   Result: White channel in Color area works fine and change the SK6812.
3. Add 1 more strip (WS2812B strip with 18 LEDs or even with 1 led)
   Result: The white channel in color area not change the color in SK6812 Strip

Expected Behavior

In prior versions of WLED the white channel works with 8 max ouput leds configuration without problem, after adding the audioreactive mod and change the max output to ¿12? (i can't remember the exact number 😉) or some changes in version 0.15.0-b2 the problem starts.

Install Method

Binary from WLED.me

What version of WLED?

0.15.0-b7

Which microcontroller/board are you seeing the problem on?

ESP32

Relevant log/trace output

No response

Anything else?

Hope this helps to improve, I worte like a bug, may be is a bug, may be is a new feature, may be is not possible, but, if I found something, I'll try to resolve if posssible. No C coding developer, just another WLED user 😊.

Code of Conduct

• I agree to follow this project's Code of Conduct

[softhack007]

after adding the audioreactive mod and change the max output to ¿12? (i can't remember the exact number 😉) or some changes in version 0.15.0-b2 the problem starts.

@blazoncek maybe I'm wrong here, but afaik this configuration would use the new "I2S parallel" output driver of NPB. The I2S parallel driver has a limitation that it can only drive exactly the same led types on all pins - so having an sk6812 (RGBW) strip among all the ws2812b could be a problem?

[softhack007]

closing in favour of #4301

The cause of both reports is the same - having an SK6812 (RGBW) output in between several ws2812b (RGB) outputs.

[blazoncek]

The I2S parallel driver has a limitation that it can only drive exactly the same led types on all pins - so having an sk6812 (RGBW) strip among all the ws2812b could be a problem?

My tests showed that you can mix LED types to some extent when using parallel I2S. I've tested WS2812 and SK6812.