Buzzer Projects

Build a simple countdown timer with an Arduino Uno, a single-digit 7-segment display, a push button, and a buzzer. Press the button to count from 9 down to 0, then hear a short finish alert when the countdown ends.

Build a small tilt alarm box with an Arduino Uno, a tilt switch, an LED, and a buzzer. The Arduino watches the tilt switch, confirms that the box has moved, then turns on both visual and sound alerts.

Build an Arduino heartbeat monitor with a pulse-style heart beat sensor, an LCD1602 display, and a buzzer. The Arduino watches the analog pulse signal, detects clean beat peaks, estimates BPM from the time between beats, and shows the live result on the LCD.

Build a simple parking helper with an HC-SR04 ultrasonic sensor, an LCD1602 display, and a buzzer. The Arduino measures how far an object is, shows the distance on the LCD, and changes the warning sound as the object gets closer.

In this easy project you'll wire a push button to an Arduino so every press lights up a blue LED and sounds a buzzer. You'll learn how buttons work, why pins can be 'noisy', and a few simple code tricks to make your gadget feel snappy.

In this project you will connect a small buzzer to your Arduino and make it play the Happy Birthday tune. You will learn how sound works, how to turn numbers into musical notes, and how to write code that plays a melody — all without needing any musical knowledge.