https://www.youtube.com/watch?v=VQpUAug5YHo

Hello
I have an issue that when I set the number of LED's above 255 in "#define NUM_LEDS 240" the LED's will not light anymore
It is working fine with 255 and under
but if I go to 256
I still get the RGB flash at the start but no light after that
I'm using Prismatik (unofficial) 64bit and WS2812B LED's
I have also tried to use "FastLED.h" V 3.1.3 and V3.3.3

Arduino: 1.8.5 (Windows 10), Board: "Arduino Mini, ATmega328P"

In file included from C:\Users\user\Desktop\ambilight\sketch_nov25a\sketch_nov25a.ino:9:0:

C:\Users\user\Documents\Arduino\libraries\libraries\FastLED/FastLED.h:17:21: note: #pragma message: FastLED version 3.001.006

pragma message "FastLED version 3.001.006"

                 ^

Sketch uses 5306 bytes (18%) of program storage space. Maximum is 28672 bytes.
Global variables use 1004 bytes (49%) of dynamic memory, leaving 1044 bytes for local variables. Maximum is 2048 bytes.
An error occurred while uploading the sketch

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

i have downloaded the library and placed it inside a \Arduino\libraries
and renamed it to FastLED can you please help me what step am i missing and doing wrong
https://github.com/FastLED/FastLED/releases/tag/v3.1.6 using this library

using this source code
https://github.com/Wifsimster/adalight_ws2812/blob/master/Adalight_WS2812.ino

and following this you tube tutorial
https://www.youtube.com/watch?v=juC-3imLoTQ&t=258s

When I upload the sketch, my LEDs turn green and stay green. I am using WS2812B so it's probably actually a BLUE in the code.

Really, not a real issue, and sorry if this is not convinient way, but I'm totally noob with Arduino (this is my first project) and it is working :)

These LEDs are too much bright for TV ambient light purpose. From other side, with lowering brightness, I can use power supply with lower output current.

What should I add/change in code, so max brightness never goes above e.g. 170?

Thanks and thanks for great project. This give us a choice for cheap ambient light, we're not depending on unreal expensive rpi these days.