Buzzer alarm
Turn a digital pin into a clear audible alert.
What you build in this project
Buzzer alarm is one focused build from the Arduino UNO Sensor & Output Starter Kit - LEDs, Buzzer, Servo, Ultrasonic & LCD. It uses the parts listed below to make a working electronics example, then you can combine it with the other projects in the kit.
Turn a digital pin into a clear audible alert.
Parts used
UNO R3, active buzzer, breadboard, jumper wires
What to check
Wire the parts, upload the sketch from the kit page, then test this project by watching the Serial Monitor or the output behavior.
What you learn
You learn how the controller reads real sensor signals, makes a decision in code, and turns that result into a useful output.
What this project uses
Every item is in the kit — nothing extra to buy.
Arduino UNO Sensor & Output Starter Kit - LEDs, Buzzer, Servo, Ultrasonic & LCD
All 10 parts in one box, with this project and 6 more to build from them.
Need only these parts? Order them loose · from AED 89.23
One of each part. Packs (resistor assortment, jumper wires) already hold more than a single build needs. Delivery is free on orders AED 150.00+.
More from this kit
Blink and traffic light
Learn digital outputs, current-limiting resistors, and simple timing.
Ultrasonic distance meter
Measure distance and print readings to Serial Monitor.
Parking assistant
Beep faster and change LED color as an object gets closer.