I want to control about 2000 WS series LEDs from arduino, but obviously,

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I want to control about 2000 WS series LEDs from arduino, but obviously, there isn’t enough ram to do that in an array. I have been reading the docs for hours, and fast_fill looks promising, but what i need to do is just basically slam out 1 RGB colour code to the LED strings without allocating more CRGB arrays. So basically i want to create 1 crgb element, but fill the entire string with that. At 400 leds im using over 1.5k of RAM, so i cant finish the rest of my program.

Am i not reading the docs correctly? Is Fast_fill what i need?

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IMHO you just create an array of 250 leds then feed the data to 8 string of 250 leds
From the same data pin

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Hung’s idea is a great one if you don’t need to individually control all the pixels.

If you’re open to the the idea of getting another controller, have a look a Teensy 3.2 and you’ll have tons more RAM.
https://www.pjrc.com/store/teensy32.html

I’m not familiar with a FastLED fast_fill function. Can you provide more info?

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Im primarily sticking with arudino for the moment. I cant find anymore info on fastfill other then its used instead of a loop to fill an array of CRGB objects. i read something about applying it multiple times but i cant find anymore info on.

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if you want to use more memory and the functionality of Arduino and you want fast access to many LEDs the Arduino DUE is your choice. You can easily put 8 lines (that was supported by the FASTLED library) with 470 Ohm on each as data lines. There is also samples on how to code this.

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I didnt exactly find a solution for this, so i just ended up using 1 of the controllers as a “Driver” and using that to control 6 long strings of 400 each. Not individially addressable no, but worked perfectly for what i needed.