Preparing for any problems or issues

In order for my project to run smoothly I searched for any problems or issues that I may encounter.

When thinking through the technique side of my project the main issue I will encounter will be how to rotate the projector when told to do so.

There are 4 ways in which I could do this:
1> Using a turntable motor
2> Using a stepping motor and build the platforms
3> Using a windwiper motor and building the platforms
4> To build the whole thing myself, using a drill as the motor.

My first aim is to find a cheap turntable motor that could hold the weight of the projector which is approximately 4kg.

This will be the Special Study of my final piece.