The Harmonograph is a gen drawing machine that works with pendulums.
The duration of the movement depends on the input forces and random environmental conditions.
But in the digital world, we can make it perpetual.
Here is an infinite harmonograph breathing in a state of noise.

2 pendulums for the Harmonograph.
3 separate layers.

Keys

[1][2][3] -> show/hide layers
[4] -> 1:1
[5] -> 16:9
[6] -> 9:16
[p] -> pause/play
[s] -> save / download (in live view)
[ARROW UP] -> Faster (more laps)
[ARROW DOWN] -> Slower (fewer laps)