What kind of machine did Leonardo da Vinci design as a 15th-century programmable automaton?

Leonardo da Vinci designed a mechanical knight as a 15th-century programmable automaton.

The machine was probably created for a court festival in Milan around 1495. It wore armor and was designed to perform human-like actions, including sitting, standing, moving its arms, and moving its jaw. Internal cables, gears, and pulleys translated motion from a hand-operated mechanism into coordinated gestures.

The original machine was not preserved, and its exact capabilities remain uncertain. Researchers reconstructed it from Leonardo’s drawings and notes, revealing that the design used two separate systems: one for the legs and one for the upper body. This makes the knight an important early example of mechanical robotics.

Calling it a robot is a modern description. Leonardo’s machine had no electronic control or artificial intelligence; it was an automaton whose actions were determined by mechanical programming.