Hello !
I am post graduate in a Robotics, usually one implements 6 d.o.f. arm implement inverse kinematics,
therefore for 6.degree.of.freedom. motors as actuators are required , with arm link between the actuators,
having made the hardware one uses inverse kinematics to do pic place job. if its a mobile robot it must be placed on a moving toy car with remote control.
Kindly elaborate about your vision.