Just to write something done for people to read::
A robots body is primary a connection of joints, then all thats needed after that is sensors, a powersupply and some form of computer for the SENSOR->MOTOR LINK.
the joints should have absolute positioning in, you can do this in two ways, a stepper motor, or a potentometre connected dc motor, and the motor stops once the potentiometre is at the right position, and that is done through amp/volt comparison - you can use amps or volts, because a potentiometre affects both at once.
And that is it for the basic robot, so they are pretty simple - and if you could get the motors into a mould, the whole thing could be mouldable in so many layers.
ADDONS
* concurrent map building system. (SLAM)
* internal motor-sensor model, for predicting the future, and a searching system to find the pinnacle result for its goal.
* solar power + a sunbaking cycle, like how god makes lizards.
* weapons? (nah, better not!
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