So a lot has happened since the last update. First of all, I have been featured on the main site. That probably wouldn't have been possible without all of you, who followed and liked my project. So to thank you all, I decided to step up the speed a bit:
I already ordered all the parts so they'll be here by the weekend. For the ESP8285 and APA102-2020, this meant ordering assembled boards with the parts on them as availability of those is otherwise very bad in Germany. Sadly, I won't be here to try assemble everything, as I'm going to London from Friday to Tuesday.
As some of you might have noted, there has been a last minute change on the design - the center hole is now sized for an 608 bearing. That way I can use 608 bearings with a greater availability for the center. Especially, when it comes to ceramic bearings and the like, they are simply cheaper.
Thank you, followers and likers! I'm doing my best to show some results very soon.
Quick update: I just ordered the PCB.