Hello!
I would assume 2 or more joints, or degrees of freedom, would constitute
an articulated robot. Mousetraps are considered to be a type of "robot" to
some definitions, but I would not call it a robot.
If the robot is a moving base or arm, but has no intelligence with the
function it is performing, then that would be a sad robot.
Google 's Alexa has no arms, but can do alot of work. In this sense, if you could make a
body for Alexa, to respond to physical commands coupled with the original
intelligence, you will have a interesting robot!
Anyway, good luck on whatever you are working on!!
see you same robot channel, same robot time!
excelsior!