The_Official_Raspberry_Pi_-_Beginner’s_Book_Vol1,_2018 (1)

156 THE OFFICIAL RASPBERRY PI BEGINNER'S GUIDE

Hello, Sense HAT!

As with all programming projects, there’s an obvious place to start with the Sense HAT:

scrolling a welcome message across its LED display. If you’re using the Sense HAT emulator,

load it now by clicking on the Raspbian menu icon, choosing the Programming category, and

clicking on Sense HAT Emulator.

Greetings from Scratch

Load Scratch 2 from the Raspbian menu, click on More Blocks in the blocks palette, then

the ‘Add an Extension’ button. Click on the ‘Pi SenseHAT’ extension (Figure 7-2), then the

OK button. This loads the blocks you need to control the various features of the Sense HAT,

including its LED display. When you need them, you’ll find them in the More Blocks category.

5 Figure 7-2: Adding the ‘Pi SenseHAT’ extension to Scratch 2

Start by dragging a when clicked Events block onto the script area, then drag a

scroll message block directly underneath it. Edit the text so the block reads ‘scroll message

Hello, World! at rotation 0 in colour white background off’.

PROGRAMMING EXPERIENCE

This chapter assumes experience with Scratch 2 or Python and

the Thonny integrated development environment (IDE), depending

on if you’re working through the Scratch or Python code examples

• or both! If you haven’t done so already, please turn to Chapter 4,
  Programming with Scratch, or Chapter 5, Programming with
  Python, and work through the projects in that chapter first.