https://www.niklasroy.com/carton-clock/

After my last trash clock (https://news.ycombinator.com/item?id=49930439), I wanted to see how low I could go. My latest clock is built mainly from empty drink cartons, plus a few skewers, some paper straws, a piece of string, some nuts as weights, and lots of hot glue. It has a pendulum, an escapement, and hands for seconds, minutes, and hours, and runs for about an hour.

The design of the gears and escapement was AI-assisted: Claude built me interactive browser tools that generate templates and 3D-printable jigs and tools.

I’m happy to answer your questions! And to the commenter who suggested I submit trash clock timekeeping as a talk to 40C3: I did, and it got accepted. CU at Congress, I guess!?