What humanoid machine did Leonardo da Vinci design for a court performance?

Leonardo da Vinci designed a mechanical knight, a humanoid machine intended for a court performance.

The design dates to about 1495, during Leonardo's work for Ludovico Sforza in Milan. Its internal mechanism used cables and pulleys connected to a control system, allowing the figure to perform limited human-like actions such as sitting, standing, and moving its arms. The surviving drawings were discovered and interpreted by modern researchers rather than preserved as a complete original machine.

In 2002, roboticist Mark Rosheim built a working reconstruction based on Leonardo's sketches. This reconstruction helped demonstrate that the drawings contained a plausible mechanical system, although it should not be mistaken for an autonomous modern robot.

The figure is often called Leonardo's robot, but “mechanical knight” is the more specific historical name. It was a programmable-looking automaton powered by mechanisms, not artificial intelligence.