Controlling servo with IR led and photodiode I have found myself a really nice scheme of a buzzer that is controled by the IR led and photodiode by I want to upgrade it so it can be used for controlling a servo. What I have in mind is that when there is no object the servo whould stand still and when object comes by it will go to 90 degrees, wait for 5 sec and go back to 0 position. I just want to know is that possible for an Arduino starter and where should I look for help. Thanks.
Yes that is possible. 

Start by googling for the two halves of your project separately. Find a project, example or tutorial which controls a servo. Get it working. Understand it.  Then find one which deals with a sensor similar to the one you want to use, get it working, understand it.

Then you'll have everything you need to get your project up and running.