Leonardo da Vinci designed a mechanical robot knight in armor for a Milanese court festival.
The design is associated with work Leonardo carried out for Ludovico Sforza, the Duke of Milan, around 1495. His surviving notes and drawings show a human-shaped mechanism with gears, cables, and pulleys inside an armored shell. The machine was intended to imitate human movements such as sitting, standing, and moving its arms.
Leonardo’s design was not an electronic robot. It was a clockwork-style automaton powered by mechanical transmission. The surviving evidence does not prove that the exact machine was completed or publicly demonstrated in Leonardo’s lifetime.
In the early twenty-first century, engineers built reconstructions based on Leonardo’s sketches. Those reconstructions helped demonstrate how the internal mechanisms might have operated, while also showing that some details had to be inferred. The robot knight therefore represents a documented mechanical concept, not a surviving original machine or a modern autonomous robot.