The Arduino Mega can control both active and passive buzzers through its digital output pins, enabling audible alerts and sound generation for interactive projects and notifications.

A buzzer has two pins, namely positive and negative. The positive terminal is represented by the ‘+’ symbol and negative terminal is represented by the ‘-’ symbol just like an led and a capacitor.

Abstract: The paper aims to design and implement a low cost and reliable quiz buzzer system with the help of Arduino and seven segment display for easier detection of contestants or participants ...