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Robotics at Home with Raspberry Pi Pico

You're reading from   Robotics at Home with Raspberry Pi Pico Build autonomous robots with the versatile low-cost Raspberry Pi Pico controller and Python

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Product type Paperback
Published in Mar 2023
Publisher Packt
ISBN-13 9781803246079
Length 400 pages
Edition 1st Edition
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Author (1):
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Danny Staple Danny Staple
Author Profile Icon Danny Staple
Danny Staple
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Table of Contents (20) Chapters Close

Preface 1. Part 1: The Basics – Preparing for Robotics with Raspberry Pi Pico
2. Chapter 1: Planning a Robot with Raspberry Pi Pico FREE CHAPTER 3. Chapter 2: Preparing Raspberry Pi Pico 4. Chapter 3: Designing a Robot Chassis in FreeCAD 5. Chapter 4: Building a Robot around Pico 6. Chapter 5: Driving Motors with Raspberry Pi Pico 7. Part 2: Interfacing Raspberry Pi Pico with Simple Sensors and Outputs
8. Chapter 6: Measuring Movement with Encoders on Raspberry Pi Pico 9. Chapter 7: Planning and Shopping for More Devices 10. Chapter 8: Sensing Distances to Detect Objects with Pico 11. Chapter 9: Teleoperating a Raspberry Pi Pico Robot with Bluetooth LE 12. Part 3: Adding More Robotic Behaviors to Raspberry Pi Pico
13. Chapter 10: Using the PID Algorithm to Follow Walls 14. Chapter 11: Controlling Motion with Encoders on Raspberry Pi Pico 15. Chapter 12: Detecting Orientation with an IMU on Raspberry Pi Pico 16. Chapter 13: Determining Position Using Monte Carlo Localization 17. Chapter 14: Continuing Your Journey – Your Next Robot 18. Index 19. Other Books You May Enjoy

Modeling chassis parts from sketches

We are going to start making 3D parts. The first part is the chassis plate itself, which requires two steps, and then we build other parts around it.

Modeling the chassis plate

The following screenshot shows how we will make a 3D chassis plate:

Figure 3.22 – Making the 3D chassis plate

The top part shows the Pad tool, the bottom left shows the Pad Tasks panel, and the right part shows the 3D view with the plate in it. We’ve put our sketches in a main sketch, so we’ll need to import these. For importing geometry from sketches, FreeCAD has shape binder objects. Ensure you’re in the Part Design workbench, and then follow these steps to make it:

  1. Create a ChassisPlate body and double-click to make it active.
  2. Click Shape binder, and then the task view shows the names of selected geometry.
  3. Select the four outer lines of the ChassisOutline sketch. Unlike sketching, you need to hold...
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