I am working up a new projector and have been scratching my head about the best way to implement some scan thru effects (gratings, lumia, all that good stuff), and I got to thinking about the rotating gobo wheels used in moving lights.....
These typically consist of a circular plate with 8 or so holes that take glass patterns and that are normally configured with two stepper motors so you can rotate the appropriate pattern into the beam and then use the second motor to cause the pattern to rotate within its mounting.
The firmware will probably be a weekends work to write, and scrap movers are not uncommon.
Sounds perfect to me, but I have not seen anyone do it, is there something basic I am missing?
Just want to make sure I am not going down a blind alley.
Regards, Dan.