Summary

Leonardo da Vinci developed several perpetual motion machines.
https://www.thingiverse.com/thing:2831652
https://www.thingiverse.com/thing:2800940
https://www.thingiverse.com/thing:2791609
This Thing has rotating hammers. At the right the weight is at a larger distance from the center compared to the weight at the left.

The stand is the same as in:
https://www.thingiverse.com/thing:2831652

This Thing requires a good understanding of the Major Laws of Physics.
If you are in doubt, ask your physics teacher :-)

https://youtu.be/pKcSfUmG1II