Leonardo da Vinci designed a mechanical drum that could play rhythms automatically.
Leonardo’s automatic drum used a rotating cylinder or similar programmed mechanism to control striking elements. As the mechanism turned, pins or shaped parts could activate drumsticks and produce a repeating rhythm. The concept belongs to Leonardo’s studies of automated machines and musical instruments.
The device demonstrates the same principle used in later mechanical music: a programmed physical pattern controls movement. It did not require a musician to strike the drum continuously. Leonardo also explored other musical mechanisms, including automated instruments and a mechanical lion associated with court entertainments.
The drum is not the same as a barrel organ. A barrel organ uses a pinned cylinder to control pipes, while Leonardo’s drum uses percussion. Reconstructions have been made from his drawings, but the surviving sketches do not establish that one complete original machine was built and performed publicly.