Swap CW instead of WW

UMJonny · January 27, 2025, 1:43pm

I have a set of Lumary pathway lights that work with SM16825 but CW and G are reversed. Swap only allows W to be swapped. Anything I can do? Is there anything JSON I can do to swap them?

Thanks

blazoncek · January 28, 2025, 7:53am

github.com/Aircoookie/WLED

Add fix for color swaps not accessible via dropdown menus.

opened 06:04PM - 08 Dec 24 UTC

ctbrahmstedt

enhancement discussion

Aloha! First off, this project is amazing. I can't believe it's taken me this …long to discover it. But, to the point, I have a set of walkway lights that use the SM16825 IC. The manufacturer has a color order of B R CW WW G because they're psychopaths. Because of this, there wasn't a way in the standard dropdown options to fix this - I effectively needed to do two swaps. WW+CW and G+CW. I ended up just downloading the repo and changed the output order to R G CW WW G on the SM16825, and then did the BRG swap on the controller. This kind of worked. It worked in that the colors are mapped like they're supposed to, though I think blue is only outputting 50% of it's max brightness. I also can't use automatic white calculation. I only just downloaded the repo and compiled it for the first time a couple of days ago, so I think it's a color order of operations issue with gamma correction, CCT, etc. I think instead of a color order dropdown/swap page, the color input should be X dropdown menus for as many colors as the fixture supports, and each dropdown have a R, G, B, WW, CW option. That way, every possible combination is accessible. Another beauty of this approach is that it's expandable for future fixtures that use > 5 LEDs (WW, NW, CW) etc, and you just have to dynamically add dropdowns for each addon. Perhaps for an "advanced user," the options for each channel could be "White" or "Color," with an option for the user to fill in the actual Kelvin of the white LED, so that the white balance would be consistent across different fixtures, and for colors, either a degree on the hue circle, or the wavelength of the LED. At some point, I'd like to whip up a batch of my own LED PCB's with a wider gamut with dedicated Amber, Cyan, Yellow, and UV LED's. Similar to how white can be calculated from RGB, I could stay in the RGB color space, and automatically calculate A, CY, Y from RGB. To achieve this, I would likely just use two WS2805's on the same board and group them. That part is probably outside the scope of this addition, but a small tweak on how the colors are initially mapped could pave the way for a lot of expandability. I haven't yet digested the full codebase, but if I can get the above working steady enough, I'd be happy to contribute the changes.

UMJonny · January 28, 2025, 11:37am

Aah, so this is dead in the water I guess. That’s a bummer.

blazoncek · January 29, 2025, 8:47am

You can modify source and compile your custom version.

EDIT: Or upvote by providing details of your strip.

UMJonny · January 31, 2025, 2:30pm

Happy to collect info, just don’t know how. I opened one of the lights up, but the IC is covered in compound to keep it waterproof. I can see that the LED itself is all in one. It’s a square RGB with a CW section on the bottom and a WW section on the top.

Is there any way to look anything up via an FCC listing?

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Swap CW instead of WW

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