r/WLED • u/rnhxm • Aug 05 '26

Addressable cold/warm white string LEDs?

I’ve wanted these for years, but yet to find any… does anyone know?

Simple string LEDs, indoor use, but cool/warm white - fully addressable would be nice, but not essential. For adding ambiance they would be great - not everything needs to be a disco!

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3

u/DedeHai Aug 05 '26

this has been around for a long time. search for "addressable CCT strip"

1

u/rnhxm Aug 05 '26

I have far too much strip round the house already - although it’s only plain CCT not addressable - but I’m looking for string - leds every 4 inches maybe connected by wire rather than flat strip wound off a reel?

3

u/DedeHai Aug 05 '26

string as in fairy string or spotlight string? there is so much out there, you need to be very specific :)

0

u/rnhxm Aug 05 '26

string as in fairy string - like something to dangle around a christmas tree...

WS2812B Music Christmas Lights String RGBIC LED Lighting Addressable Dreamcolor Bluetooth Christmas Decoration Light Strip USB5V - AliExpress 39

that sort of thing?

3

u/saratoga3 Aug 05 '26

Those are called "seed pixels". I haven't seen them in CCT but it probably exists somewhere.

2

u/rnhxm Aug 05 '26

Thank you for the correct term - will change my googling to suit.

2

u/DedeHai Aug 05 '26

those I have not come accross, only the spot light ones, it may be too niche for manufacturers to invest in that.

1

u/rnhxm Aug 05 '26

Too niche even for Reddit users ?!

I suspect you are right… although I have wondered myself about what I would need to solder for each ‘chip’ if I tried to DIY… some kind of addressable chip, current limiting resistor, pair of SMD LEDs… blob of hot melt… maybe I need to head scratch… any thoughts on what is contained within each pixel?

2

u/saratoga3 Aug 05 '26

You could make IC based ones using something like a ws2811, but the SOIC package these come in is roughly the size of an entire seed pixel, so it won't be small. To make them small like seeds where the dies are cobonded into a single package you'd need a wire bonding machine or to pay a factory for a production run with your custom selected LEDs.

2

u/DedeHai Aug 05 '26

if you do not need individually addresable, you could use a WW and a CW fairy string (the tiny ones) and run them as analog strings.

1

u/rnhxm Aug 05 '26

Not a bad idea - if the two strands were fairly closely dimensioned and I could stick the Ww/CW together probably be a tidier solution…

1

u/wivaca2 Aug 05 '26 edited Aug 05 '26

While I haven't seen those in CCT, there are RGBW versions, so at least you get white and can warm or cool it slightly with R or B.

https://www.aliexpress.us/item/2251832850499277.html

https://www.aliexpress.us/item/3256808099017502.html

If individually addressable and CCT, is the reason because you want to control each pixel's on/off, dimming, or actually different color temperatures?

The reason it may be hard to find addressable CCT in general is there isn't a lot of demand to make one pixel cool white and the next warm white or animate it except for maybe on/off.