What mechanical automaton did Leonardo da Vinci design in the form of a medieval warrior?

Leonardo da Vinci designed a mechanical knight, an automaton capable of limited human-like movements.

Leonardo created the design around 1495 for a pageant in Milan sponsored by Ludovico Sforza. The machine was dressed in armor and operated through a system of pulleys, cables, and gears. Reconstructions indicate that it could sit, stand, move its arms, and move its jaw.

The original mechanism was not discovered as a complete surviving robot. Researchers reconstructed it from Leonardo’s anatomical and mechanical drawings, especially studies connected with the Codex Madrid I. In 2002, Mark Rosheim built a working reconstruction based on those drawings.

The mechanical knight is often described as an early robot, although “robot” is a modern term coined centuries later. It is more precisely a programmable-looking Renaissance automaton: a machine designed to perform preset movements through mechanical transmission.