What was Leonardo da Vinci’s robot knight designed to do?

Leonardo da Vinci’s robot knight was designed to sit, stand, and move its arms.

Leonardo sketched the humanoid automaton around 1495 for a pageant at the court of Ludovico Sforza in Milan. The mechanism was concealed inside armor and used a system of pulleys, cables, gears, and a crank. Its programmed movements reportedly included raising its arms, moving its head, and opening and closing its jaw, while the larger body could shift between sitting and standing positions.

The knight was not an autonomous robot in the modern electronic sense. It had no computer, sensors, or independent decision-making; its actions were mechanically prearranged. The design became widely known after engineer and robotics researcher Mark Rosheim reconstructed it from Leonardo's drawings in the 2000s. That reconstruction suggested the mechanism was more coherent and capable than many earlier summaries assumed, while still emphasizing that it was a theatrical automaton powered by human-operated mechanical input.