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Scratch Cookbook

You're reading from   Scratch Cookbook If want to get your programming know-how off the starting blocks in a fun, involving way, then this guide to Scratch is perfect. In no time you'll be building your own interactive programs that include animations and sound.

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Product type Paperback
Published in Jul 2013
Publisher Packt
ISBN-13 9781849518420
Length 262 pages
Edition 1st Edition
Languages
Concepts
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Author (1):
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Brandon Milonovich Brandon Milonovich
Author Profile Icon Brandon Milonovich
Brandon Milonovich
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Table of Contents (17) Chapters Close

Scratch Cookbook
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
1. Getting Started with Scratch FREE CHAPTER 2. Storytelling 3. Adding Animation 4. Basic Gaming 5. Spicing up Games 6. Bringing in Sound 7. Integrating PicoBoards 8. Programming to Calculate 9. Project Remixing Collaboration Index

Measuring resistance


Resistance, which can be thought of as how easily electricity flows through something, can be measured (informally) using Scratch. This recipe is going to get us going in collecting resistance values.

Getting ready

This will be a recipe that will work with the resistance of two different items, so we'll use two sets of alligator clips. We'll create a program that will check the resistance of two objects, and will let the operator know which object has a higher resistance.

Set up the PicoBoard with two of the alligator clips, as shown here:

Now you're ready to get started!

How to do it...

Follow these steps to make our program that will check the resistance of two objects:

  1. Open a new Scratch file.

  2. Drag over a block.
  3. Drag three if statements underneath the block from step 2. This will result in the following:

  4. Drag one of each of the three blocks from the Operators category that compare values into the conditional statements you just created.

    This should result in the following...

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