well it depends on what you mean for perpetuum mobile

Objects which continue to orbit forever are , in my opinion, an example of perpetuum mobile which by itself is not in conflict with the laws of physics
The direct opposite

The generation of energy is a further requirement
If so, the first and the second laws of thermodynamics prevent the system from moving forever

Finsrud's device does not supply energy, as far as I understand
Mr Finsrud admit that some maintance is needed
In principle it may work