Let's Make Robots!

how to control movement

hi ,

    i would like to know that is there any method of designing a robotic arm which is controlled by imitating the movement ,that is , it follows the movement of your arm with same speed and acceleration. 

if yes then tell me the components to make the controller.

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yeah i have watched that video that's why i also want to make that arm

but  it don't  tell about the components and how to join them dat's wat i want

Looks pretty straight forwards, number of servos = number of potentiometers, it could be done with a logic circuit.

Look at this mini robot arm. The 2nd video shows nearly the same behaviour that you want.