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Create Musical Instrument

Description

You can turn this screen into a game screen playing with your friends, a smart alarm showing the weather and time, a display monitoring your robot’s action and many other things.

This article will show you how to DIY a Musical Instrument. Let’s take a look!

_images/paino1.jpg

Required Components

  • A Screen

  • 8G+ SD Card

  • Scratch 3 (either online or offline)

  • Micro SD Card Reader

  • 40 Pin Ribbon Cable

  • T-Type GPIO Extension Board

  • Breadboard

  • Button

  • 10k Ohm Resistor

  • Several Jumper Wires

You Will Learn

  • Use note functions on Scratch.

  • Input the button value from the GPIO pins.

Lesson Guide

Build the Circuit

First connect the GPIO Extension Board, please read GPIO Extension Board for specific steps.

Insert the T-type GPIO extension board into the breadboard and build the circuit as shown below.

_images/paino3.png

Programming with Scratch 3

On the left of Scratch 3 main page are some neatly arranged blocks with which you can drag to program. In this project, we need to add in other two functions: Music and Raspberry Pi GPIO. The Music function to play instruments and drums, and the Raspberry Pi GPIO function can be used to control the whole pins of Raspberry Pi.

_images/paino5.jpg

Tap Add icon at lower left corner and choose Music and Raspberry Pi GPIO to add two functions on the left of the main page of the Scratch 3.

_images/paino6.jpg

Finished the program.

_images/paino7.jpg

Press these three buttons on the breadboard and there emits the tones “Do, Re, Mi”.

_images/paino8.jpg