What wooden machine is considered Leonardo da Vinci’s earliest known robot design?

Leonardo da Vinci’s mechanical knight is considered his earliest known robot design.

Leonardo designed the humanoid machine around 1495 for a pageant in Milan organized by Ludovico Sforza. It was built inside armor and could reportedly perform simple humanlike movements, including sitting, standing, and moving its arms. The mechanism used cables, pulleys, and a programmable system of cams.

The original machine disappeared, so its exact operation cannot be established with complete certainty. In the 20th century, researchers reconstructed versions from Leonardo’s drawings and showed that the design could plausibly produce the movements described. The reconstruction made the knight a celebrated example of Renaissance automata.

It was not an autonomous robot in the modern electronic sense. It had no computer, sensors, or artificial intelligence. Its importance lies in its mechanical programming and coordinated movement, which connect Renaissance engineering with later robotic design.