iPad holder with Accelerometer Support Answered

I got this idea while I was playing a racing game on my iPad. I would like to build an iPad holder which be tilted with a shaft or with something like a joystick. Thereby utilising the accelerometer capacity of racing and simulation games in a much more flashy way. 
I don't know how to proceed with the materials and how am I going to achieve the movements when it gets connected the controller. I really need some help here. Please help me!

Thanks in advance!

PS: I will soon start to work a model of the project on 3Ds Max. I will post pictures if you guys need more detailed look of it.