What type of machine did Leonardo da Vinci design to help a knight move like a human?

Leonardo da Vinci designed a humanoid robot, often called Leonardo's robot, around 1495.

The machine was a mechanical knight dressed in armor. Drawings and reconstructions indicate that it could sit, stand, and move its arms through a system of gears, cables, and pulleys. Leonardo likely developed it for a court pageant in Milan organized under the patronage of Ludovico Sforza.

The robot was an automaton, not an autonomous robot in the modern electronic sense. It had no computer, sensors, or independent decision-making system. The original mechanism was lost, and modern versions are reconstructions based on Leonardo's Codex Atlanticus drawings and related engineering knowledge.