WS2811 F8 maximum quantity

I have a questions about these LEDs but espacially about the WS2811 8mm type:

https://www.aliexpress.com/item/DC5V-Diffused-round-hat-RGB-LED-with-WS2811-PL9823-APA106-chipset-inside-5mm-8mm-Neo-pixel/32825363423.html?spm=a2g0s.9042311.0.0.U6Ap0L

I built a 7*7*7 LEDCube with the WS2811 F8 LEDs which works perfect with the FastLED library. I would like to build a 10*10*10 LEDCube with this kind of leds, preferably the WS2811 LEDs. My question is if you think this it is possible to drive 1000(10³) LEDs with the FastLED library. Problems like voltagedrop or decoupling are no problems in the cube. The datasheet of the WS2811 says it is but for these WS2811 LEDs exists no datasheet.

I would prefer the WS2811 over the other types because it is the cheapest and I already built a cube with them. Do you think another LEDType would be better?

My question is if you think this it is possible to drive 1000(10³) LEDs with the FastLED library.

What Arduino do you want to use? Each LED requires 3 bytes of SRAM so that is 3000 bytes of memory, so you need an Arduino like the Mega or one of the Arm powered Arduinos for that.

Going from 343 LEDs to 1000 is a big jump and you will have to pay more attention to your power supply decoupling than you did with your smaller project. You are also talking about a much bigger power supply, you need on that will provide 240 Watts @ 5V so that would be 48A. Where as you "only" needed 16.5A before.

Grumpy_Mike: What Arduino do you want to use? Each LED requires 3 bytes of SRAM so that is 3000 bytes of memory, so you need an Arduino like the Mega or one of the Arm powered Arduinos for that.

Going from 343 LEDs to 1000 is a big jump and you will have to pay more attention to your power supply decoupling than you did with your smaller project. You are also talking about a much bigger power supply, you need on that will provide 240 Watts @ 5V so that would be 48A. Where as you "only" needed 16.5A before.

For my 343 LEDs I used an Arduino Nano but for some animations 2KB were not enough wherefor I did use an Arduino Mega but even 8KB is a bit small for complicated animations. A Mega would not be enough for 10*10*10. I tried using an STM32 but their implementation is a bit glitchy and did not work for me. I think I will use an Arduino Zero. With 32KB I wont run out of RAM.

I measured a maximum current draw of 42,8mA per LED at RGB 255|255|255. I think the current draw would be arround 42,8 * 1000 = 42,8A. Therefor would I use three 20A power supplies cooled by ultrasilent fans that I have laying arround from my PC. The Voltagedrop was with my 7*7*7 Cube at max -0.3 or min. 4.8V. Because I would have three power sections will this be no problem.

For Decoupling will I use 1000 100nF SMD Ceramic Multilayer Capaitors soldered a few millimeters away of the legs of every LED.

I am just wondering if it is possible to pass a data signal consisting of 1000 24Bit through the LEDs.

I am just wondering if it is possible to pass a data signal consisting of 1000 24Bit through the LEDs.

Yes why not?

I measured a maximum current draw of 42,8mA per LED at RGB 255|255|255.

Note that this is possibly a false reading, because a PWM signal is not always read correctly. A value of RGB 255|255|255 is not the same as saying the LEDs are on all the time.