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Raspberry Pi Robotic Blueprints

You're reading from   Raspberry Pi Robotic Blueprints Utilize the powerful ingredients of Raspberry Pi to bring to life your amazing robots that can act, draw, and have fun with laser tags

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Product type Paperback
Published in Oct 2015
Publisher
ISBN-13 9781784396282
Length 198 pages
Edition 1st Edition
Concepts
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Toc

Table of Contents (9) Chapters Close

Preface 1. Adding Raspberry Pi to an RC Vehicle 2. Adding Raspberry Pi to a Humanoid Robot FREE CHAPTER 3. Building a Tracked Vehicle That Can Plan Its Own Path 4. Building a Robot That Can Play Laser Tag 5. A Robot That Can Draw 6. A Robot That Can Play Air Hockey 7. A Robot That Can Fly Index

Simple drawing using the robotic arm


You can now ask your arm to hold a drawing pen by simply opening the claw, inserting a pen, and closing the claw. You'll probably want to use some sort of marker or other drawing device with a wide tip and lots of color. The following is the arm holding the pen:

If you adjust the servo that moves the entire arm up and down, you can make the pen touch the paper, as follows:

Finally, if you move the servo that turns the base, you can draw your first curved line, similar to the following image:

This is wonderful, but drawing only curved lines will not be particularly useful; besides, an interface where the user enters the servo locations one at a time to try and draw a more complex drawing will be unacceptable. What you need is a program that takes an x-y location input and moves the robotic arm to that point with the proper servo positions.

Since the input coming from the computer will be the x and y location for a point, you'll need to translate that value...

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