What kind of automaton did Leonardo da Vinci design in Milan around 1495?

Leonardo da Vinci designed a mechanical knight automaton in Milan around 1495.

The machine was probably created for a court celebration organized under the patronage of Ludovico Sforza. Leonardo’s drawings show an armored human figure whose internal mechanism could produce movements such as sitting, standing, raising its visor, and moving its arms. The design used a system of gears, pulleys, cables, and external cranks.

The original knight has not survived. In the twentieth century, researchers studied Leonardo’s drawings and built reconstructions, including a notable model displayed in Milan. These reconstructions demonstrate that the design was mechanically plausible, though they do not prove every detail of the lost machine.

The robot was an entertainment automaton, not an autonomous robot in the modern electronic sense. It had no computer, sensors, or artificial intelligence. Its importance is that Leonardo applied anatomical observation and mechanical engineering to create a human-shaped performing machine centuries before modern robotics.