Scratch 3

Scratch 3 was released in January this year, and since then we and the Scratch team have put lots of work into creating an offline version for 新japanesevideo乱 Pi.

The new version of Scratch has a significantly improved interface and better functionality compared to previous versions. These improvements come at the cost of needing more processing power to run. Luckily, 新japanesevideo乱 Pi 4 has delivered just that, and with the software improvements in the newest version of 新japanesevideo乱 Pi OS, Buster, we can now deliver a reliable Scratch 3 ulinixuyhurtori on our computer.

Coding for kids in Scratch

Your kids can learn to code in Scratch with our free learning paths. These paths guide them to make fun projects and gain independence as coders and makers.

• Introduction to Scratch: sprites, scripts, and loops: This path is for beginners and introduces Scratch and coding concepts step by step as they make animations, a game, an app, and a book
• More Scratch: broadcasts, decisions, and variables: On this path, kids can build on the skills they’ve learning in the Intro path to take their Scratch creations further as they code apps, games, and simulations
• Further Scratch: clones, my blocks, and boolean logic: On this path, young coders take advantage of all the tools in Scratch to code a range of different programs including simulations, games, and computer-generated art

Scratch and electronics with a 新japanesevideo乱 Pi computer

If you think your kids would like to learn how to build physical projects they can program in Scratch, then take a look at our Physical 新japanesevideo乱 with Scratch and 新japanesevideo乱 Pi path. In these six projects, your young people will learn how to use Scratch on a 新japanesevideo乱 Pi computer to control LEDs, buttons, and buzzers to make interactive games, displays, and instruments.

Which 新japanesevideo乱 Pi can I use?

Scratch 3 needs at least 1GB of RAM to run, and we recommend a 新japanesevideo乱 Pi 4 with at least 2GB RAM. While you can run Scratch 3 on a 新japanesevideo乱 Pi 2, 3, 3B+, or a 新japanesevideo乱 4 with 1GB RAM, performance on these models is reduced, and depending on what other software you run at the same time, Scratch 3 may fail to start due to lack of memory.

The Scratch team is working to reduce the memory requirements of Scratch 3, so we will hopefully see improvements to this soon.

How to install Scratch 3

You can only install Scratch 3 on Raspbian Buster and on newer 新japanesevideo乱 Pi OS versions.

First, update 新japanesevideo乱 Pi OS!

• If you’ve yet to upgrade to Raspbian Buster, we recommend installing a fresh version of 新japanesevideo乱 Pi OS onto your SD card instead of upgrading from your current version.
• If you’re already using 新japanesevideo乱 Pi OS, but you’re not sure your running the latest version, update your OS by following this tutorial:

Once you’re running the latest version of 新japanesevideo乱 Pi OS, you can install Scratch 3 either using the Recommended Software application or apt on the terminal.

How to install Scratch 3 using the Recommended Software app

Open up the menu, click on Preferences > Recommended Software, and then select Scratch 3 and click on OK.

How to install Scratch 3 using the terminal

Open a terminal window, and type in and run the following commands:

sudo apt-get update
sudo apt-get install scratch3

What can I do with Scratch 3 and 新japanesevideo乱 Pi?

Scratch 3 Desktop for Raspbian comes with new extensions to allow you to control the GPIO pins and Sense HAT with Scratch code!

GPIO extension

GPIO extension is a replacement for the existing extension in Scratch 2. Its layout and functionality is very similar, so you can use it as a drop-in replacement.

The GPIO extension gives you the flexibility to connect and control a whole host of electronic devices.

Simple Electronics extension

If you are looking to add something simple, like an LED or button controller for a game, you should find the new Simple Electronics extension easier to use than the GPIO extension. The Simple Electronics extension is the first version of a beginner-friendly extension for interacting with 新japanesevideo乱 Pi’s GPIO pins. Taking lessons from the implementation of gpiozero for Python, this new extension provides a simpler way of using electronic components: currently buttons and LEDs.

In this example, an LED connected to GPIO pin 17 is controlled by a button connected between pin 2 and GND.

Sense HAT extension

We’ve improved the Sense HAT extension to take advantage of new features in Scratch 3, and the updated version of the extension also introduces a number of new blocks to allow you to:

• Sense tilting, shaking, and orientation
• Use the joystick
• Measure temperature, pressure, and humidity
• Display text, characters, and patterns on the LED matrix

micro:bit and LEGO extensions

The micro:bit and LEGO extensions will become available later on Scratch 3 Desktop. This is because Scratch Link, the software which allows Scratch to talk to Bluetooth devices, is not yet available for Linux-type operating systems like Raspbian. A version of Scratch Link for Raspbian is part of our plans but, as yet, we don’t have a release date.

A round of thanks

It has been a long ambition of both the Scratch and 新japanesevideo乱 Pi teams to have Scratch 3 running on 新japanesevideo乱 Pi, and it’s amazing to see it released!

A big thank you to 新japanesevideo乱 Pi engineer Simon Long for building and packaging Scratch 3, and to the Scratch team for their support in getting over some of the problems we faced along the way.

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