Let's make some noise with Raspberry Pi and a piezo buzzer! This tutorial provides step by step instructions how to play the Imperial march, also known as the Dart Vader's theme, from Star Wars on your Raspberry Pi. Of course this version is not as good as the masterpiece of John Williams. The advantage of this version is that it is open source.
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Step 1: Getting Ready
For this tutorial you need the following hardware components:
- Raspberry Pi (any model or version)
- Piezo Buzzer
- Male to female jumper wires (x2)
- microSD card with Raspian GNU/Linux distribution
- Power supply
Step 2: Wiring
The wiring is very simple. It takes less than a minute. One of the wires connects pin 11 of Raspberry Pi to the buzzer. The other wire connects the buzzer to ground. Raspberry Pi offers several pins for ground connections. In this case I am using pin 14.
Step 3: Installing WiringPi
WiringPi is a GPIO access library for Raspberry Pi written in the C programming language. Open a terminal on your Raspberry Pi or login via SSH. Execute the following commands to download and install WiringPi:
git clone git://git.drogon.net/wiringPi cd wiringPi ./build
Step 4: Installing the Examples
Execute the following commands on your Raspberry Pi to download the open source examples and to build them:
git clone https://github.com/leon-anavi/rpi-examples.git cd rpi-examples cd buzzer/c/ gcc starwars.c -o starwars -lwiringPi -std=c99
Step 5: Playing the Imperial March
Type in the following command to run the binary which you have built on the previous step:
If everything is OK you will hear the Imperial March (aka Dart Vader's theme) from the piezo buzzer.