Finally, I placed all 60 WS2812B LEDS and also 200 Fiber glasses.
Here 2 videos (rainbow and night effect):
I was able to place also the sound sensor (double clap to activate sky), the IR-sensor to control the sky over the IR remote and a light sensor to see if it is day or not. Unfortunately the light sensor is not really sensitive and give me a dark room also if there is light on it. Need further investigation before I can use the sound sensor (I don’t want that the sky will light up in the night :P).
Thanks to a friend, I was able to put also some fibreglass on the sky. For each LED, he printed (with a 3d printer) an adapter for 10-14 glasses. On a side I was able to put in a WS2812B-LED module, on the other side I put as many glasses as possible and fixed them with a little screw. It is not nice to see now, but the effect on the other side is really nice.
Here the partial finished box with all sensors and modules. I need to implement some other sensors and the clouds, but has a nice look, hasn’t it? 😀 Thanks to the closed box, the speaker is a little bit louder and you can hear it really good in the room, even if it has only 3W.