That's a very innovative and well made bit of kit IMHO
Nice fine Eric
If you double click the video you can get to his youtube channel and from there see many of the other videos... Well worth a watch
I went through the whole link from Bernd too.... Great to see how it was put together, I could figure some of it in my head but was stumped in the LED array itself.
Got it all locked up in my head now
Not too sure about the "easy" part though Bernd.... That frame work is a work or art in itself

(lots of legless LEDs out there

)
Try soldering that without screaming once or twice!! Heatsinks galore to stop the heat transfer from releasing other joints!
I liked playing with the ohsosillyscope too. Thanks BC

I haven't done anything like that since college (mostly used on circuits though, wave outputs etc.... Forgotten most of that!)
All in all, another thing to store for the "possibility list " that hangs in the grey matter next to my "round tuit" list!!
Very enjoyable post
Ralph.