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Project 8: Passive Buzzer
Introduction
We can use Arduino to make many interactive works. The most commonly used one is
acoustic-optic display. All the previous experiment has something to do with LED. However, the
circuit in this experiment can produce sound. Normally, the experiment is done with a buzzer but
not a speaker while buzzer is more simpler and easier to use. The buzzer we introduced here is a
passive buzzer. It cannot be actuated by itself, but by external pulse frequencies. Different
frequency produces different sound. We can use Arduino to code the melody of a song, which is
quite fun and simple.
Hardware Required
Passive Buzzer*1
Key *1
Breadboard*1
Breadboard Jumper Wires
Circuit Connection
Connection for UNO R3: