If you are looking for a project to build...

[Externet]

If you are looking for a project to build... then here is one. Does not use any actuator.

----> http://1.bp.blogspot.com/-qdbkRBbT4-U/VRoBKd6KiPI/AAAAAAAACVA/Gw6HisrGCAk/s1600/torus-700.jpg

 

[Costactc]

Nice setup but a motorised dish would just make things so much easier.