Leonardo da Vinci designed an automaton to produce programmed mechanical motion for theatrical displays.
Leonardo’s mechanical works included automata, machines that move without continuous direct handling. His famous mechanical knight, designed around 1495, was probably intended for a spectacle at the court of Ludovico Sforza in Milan. Internal cables and gears allowed the figure to sit, stand, raise its visor, and move its arms.
The machine is often called Leonardo’s robot, but “robot” is a modern term. The word robot was coined in 1920, centuries after Leonardo’s design. “Automaton” is the historically appropriate category because the figure followed mechanical actions set by its construction rather than making decisions or sensing its environment.
In 2002, roboticist Mark Rosheim built a working reconstruction based on Leonardo’s drawings and notes. The reconstruction supported the idea that the knight’s mechanisms were plausible. The surviving evidence does not prove every detail of the original performance, so reconstructions necessarily involve interpretation.