A chip lets buzzers play voice messages, melodies, and sounds, helping users understand alerts, warnings, and device status.

The circuit was constructed using a few components to produce a unique buzzer with adjustable buzzer tones. Buzzer – an electronic signaling device that produces light and buzzing sound when activated ...

The flashing is thanks to LEDs with a built-in, integrated flashing circuit and the nasty noise comes from a piezoelectric buzzer — both are available from electronics stores that sell ordinary LEDs.

Introduce students to Electronic Circuits with this double-sided jumbo sized A3 worksheet. Identify symbols and draw circuit diagrams (battery, push switch, toggle switch, bulb, buzzer, motor, led, ...