ok lets say that i use the mg996 servos, they can handle 11kg so its good enough for me.
the arm of the robot will have 20 cm in the first and 20 on second section (starting from base)
the box to control i was thinking on using pots to control it .
to store the position i can draw a scale around the pots this way i can write them on paper and them when i need it just put the pots in the right place