Let's Make Robots!

Robot Manipulator

hey,

i am a studnet of engineering .i want to make ROBOT MAnipulator,but i have no idea how to start,what to do..as its my first time to make Robot..

so i need help from u people.as its sounds here people know very well bout robot..

do tell me what are the basic to make robot..?

i also want to add Light sensor in between the manipulator so when object come in between manipulator finger it automatically closed..

i have actually no idea..

share ur knowledge so i could do better ,,

thanks all.