First string in Smart LED Curtain Lights is always white.

[xMikooo]

What happened?

Hello, I have LED Curtain from Action and with the help of #4569 I got them to work. Originaly connecting straight to Gledopto Elite 4D VCC GND and Data and setting the type to WS281x I got only the first string of 20 (it's a 20x20 matrix) to work. The rest were blinking in weird colors. I had to modify the original controller - desoldered the main IC and injected WLED data into the bus buffer (74HC245) connecting it to WLED and still not working on WS281x but on APA106 it works, kind of - the first string is white on full brightness no matter what. I believe it's software / neopixel issue since I downgraded to version 0.15.0 and it works fine however brightness is not stable there at all. So i chose to upgrade to the newest nighly build and it has the same behavior as 0.15.3.

To Reproduce Bug

Connect Surplife curtain LED to WLED and set the type to APA106. No matter the setting 20x20 or 21x20 (the board at the start on each string has dummy led) the first string will be always illuminated white no matter the color/brightness

Expected Behavior

Whole led curtain works, first string included works as expected

Install Method

Binary from WLED.me

What version of WLED?

WLED 0.16.0-alpha (2512300)

Which microcontroller/board are you seeing the problem on?

Other

Relevant log/trace output

Anything else?

No response

Code of Conduct

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

[softhack007]

Seems to be a duplicate of

• Support Smart LED Curtain #4569
• Want to have support for a specific led curtain from AliExpress #5220

tl;dr: the led chip in these curtains is not supported in WLED yet - it's close to APA106 but not exactly the same timing. Please ask for support in NeoPixelBus, this is a necessary prerequisite before anything can be done in WLED.