The breadth of talent here - from the mechanical to the electronic to the musical - is staggering. The craftsmanship and creativity are truly special. I hope this is a gratifying testament to your art, and that it emboldens you to continue to create.
5:14 This is still my favorite one you've made. It's the only one that used actual marbles instead of ball bearings. And it was the one that made me discover your channel and the world of marble machines so many years ago.
I'm from Chile, I've been a fan of your channel for many years, and I'll say again what I've said a few times before, you are my Hero ❤~ Great exhibition, you deserve that and more!
When i was 3 years old i would go to my ipad and immediately search marble runs and this would entertain me for hours! It still fascinates me to this day how marble runs have changed!
An idea if you wanted to try and hide the sensor completely( just because I think 2 diagonal arms from opposite side, would look really slick, and the assembly at the bottom blocks the view of the action), a hall effect sensor under the stop position, and a very small magnet at each end of the spring, not enough to retain the ball, but simply for the sensor. And if you wanted to get fancy.. I'm not 100% sure of this but I think the ball landing behind the magnet would be enough to subtly but measurably alter the field, jusssst enough for detection events, else a timer for that, it's not like it really changes speed here.. maybe if it had one of those wobble-bowls that add randomness. Your designs always give me interesting thoughts.
There are more complex microcontrollers on this marble machine than on your other machines. Is this something we can look forward to on more of your future builds?