Some interlinked pendulums.
What seems the exposure unit first comes in sight at 2:12, the light at 3:00, at the foreground.
That White board at 0:25 seems to be the programming unit, but I'm not sure how it works
Whew! As an Engineer, my right brain was engaged, but couldn't understand what the purpose was. Finally, toward the end, my left brain was stimulated and I see what he was doing. Very interesting and creative!