A light-powered, electromechanical chime has a striker assembly (3) inside a bell (1). The striker assembly contains a clapper (6) and electronics, including a light collector (7) and a motor (10.) The striker assembly is suspended by a torsion element (2) attached to the shaft (11) of the motor. Light causes the motor to wind the torsion element, then the unwinding torsion element causes the striker assembly to rotate and the clapper to strike the bell.