hi, my name is Gurdit Singh. I am a final year student in mechanical engineering. I want to know about the mechanics involved in making a pipe inspection robot. What i don't know is how to start and how to make one. i haven't started currently because i am not sure how to. this is what i have in mind but i dont know how does the actuator work and how can i improvise on this. please help me in resolving my problem, i will very much appreciate it..thank you!