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Raspberry Pi Pico DIY Workshop

You're reading from   Raspberry Pi Pico DIY Workshop Build exciting projects in home automation, personal health, gardening, and citizen science

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Product type Paperback
Published in May 2022
Publisher Packt
ISBN-13 9781801814812
Length 376 pages
Edition 1st Edition
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Authors (2):
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Sai Yamanoor Sai Yamanoor
Author Profile Icon Sai Yamanoor
Sai Yamanoor
Srihari Yamanoor Srihari Yamanoor
Author Profile Icon Srihari Yamanoor
Srihari Yamanoor
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Toc

Table of Contents (17) Chapters Close

Preface 1. Section 1: An Introduction to the Pico
2. Chapter 1: Getting Started with the Raspberry Pi Pico FREE CHAPTER 3. Chapter 2: Serial Interfaces and Applications 4. Chapter 3: Home Automation Projects 5. Chapter 4: Fun with Gardening! 6. Section 2: Learning by Making
7. Chapter 5: Building a Weather Station 8. Chapter 6: Designing a Giant Seven-Segment Display 9. Chapter 7: Designing a Visual Aid for Tracking Air Quality 10. Section 3: Advanced Topics
11. Chapter 8: Building Wireless Nodes 12. Chapter 9: Let's Build a Robot! 13. Chapter 10: Designing TinyML Applications 14. Chapter 11: Let's Build a Product! 15. Chapter 12: Best Practices for Working with the Pico 16. Other Books You May Enjoy

Controlling appliances

In this section, we are going to control appliances using a product called IoT Power Relay (shown in the following image). We are going to make some minor tweaks to the code sample discussed in the previous section to turn on a light when the door is open and vice-versa.

Appliances Controlled by the Power Relay

We recommend using the power relay for your projects because it offers a safe way to control AC appliances. We recommend controlling simple resistive loads such as a floor lamp.

The following photo shows the IoT power relay. The terminal on the bottom side of the picture is used to control the relay.

Figure 3.11 – IoT power relay (image source: sparkfun.com. License: CC by 2.0)

Figure 3.11 – IoT power relay (image source: sparkfun.com. License: CC by 2.0)

The IoT power relay enables controlling alternating current (AC) appliances with a 3.3 V signal. It comes with the requisite protection to safely interface the Pico with the relay. We will be making use of the GP11 pin to control the...

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