WS2812b brightness control

Good morning Folks!

Sience a few days im struggle with hyperion.
I've check the forum but i couldn't find an answer so..
Lastest version Aplha 8 is installed on my RPI3b+. Leds are controlled by GPIO18

I lost controll for brightness of my leds.
Is it possible to fix it? I did try re-install whoe software with no efect.

Have a good day people!

Hi!

Thanks for quick response!

Will try with GPIO10. My only concern is what do I need to type in command line to active GPIO10?
sudo systemctl disable --now hyperiond@pi
sudo systemctl enable --now hyperiond@root ?

Kind regards!

Thanks, i did follow Your suggestion. Unfortunately after connection to GPIO my leds give me full blast of white color.
What pin did You use as ground?