Raspberry Pi Pico DIY Workshop: Build exciting projects in home automation, personal health, gardening, and citizen science

Length: 376 pages
Edition: 1
Language: English
Publisher: Packt Publishing
Publication Date: 2022-05-26
ISBN-10: 1801814813
ISBN-13: 9781801814812
Sales Rank: #0 (See Top 100 Books)

Take your first steps with the Raspberry Pi Pico and take on exciting projects using CircuitPython, MicroPython, and Pico

Key Features

Make the most of the Raspberry Pi Pico―a low-cost microcontroller that is primed for innovation
Work with easy-to-follow examples and learn how to interface and program a Raspberry Pi Pico
Work on fun projects, right from home automation to building a seven-segment display to tracking air quality

Book Description

The Raspberry Pi Pico is the latest addition to the Raspberry Pi family of products. Introduced by the Raspberry Pi Foundation, based on their RP2040 chip, it is a tiny, fast microcontroller that packs enough punch to power an extensive range of applications. Raspberry Pi Pico DIY Workshop will help you get started with your own Pico and leverage its features to develop innovative products.

This book begins with an introduction to the Raspberry Pi Pico, giving you a thorough understanding of the RP2040’s peripherals and different development boards for the Pico designed and manufactured by various organizations. You’ll explore add-on hardware and programming language options available for the Pico. Next, you’ll focus on practical skills, starting with a simple LED blinking project and building up to a giant seven-segment display, while working with application examples such as citizen science displays, digital health, and robots. You’ll also work on exciting projects around gardening, building a weather station, tracking air quality, hacking your personal health, and building a robot, along with discovering tips and tricks to give you the confidence needed to make the best use of RP2040.

By the end of this Raspberry Pi book, you’ll have built a solid foundation in product development using the RP2040, acquired a skillset crucial for embedded device development, and have a robot that you built yourself.

What you will learn

Understand the RP2040’s peripherals and apply them in the real world
Find out about the programming languages that can be used to program the RP2040
Delve into the applications of serial interfaces available on the Pico
Discover add-on hardware available for the RP2040
Explore different development board variants for the Raspberry Pi Pico
Discover tips and tricks for seamless product development with the Pico

Who this book is for

This book is for students, teachers, engineers, scientists, artists, and tech enthusiasts who want to develop embedded systems that drive cost-effective automation, IoT, robotics, medical devices, and art projects. If you consider yourself a maker and would like to learn how to use the Raspberry Pi Pico, then this book is for you. Familiarity with Python programming, MicroPython, CircuitPython, embedded hardware, and peripherals is helpful but not mandatory to get the most out of this book.

Raspberry Pi Pico DIY Workshop
Contributors
About the authors
About the reviewers
Preface
    Who this book is for
    What this book covers
    To get the most out of this book
    Download the example code files
    Code in Action
    Download the color images
    Conventions used
    Get in touch
    Share your thoughts
Section 1: An Introduction to the Pico
Chapter 1: Getting Started with the Raspberry Pi Pico
    Technical requirements 
    Introducing the Raspberry Pi Pico and RP2040
        RP2040 microcontroller
    Discussing variants of the Pico board
        Where to buy the Pico
    Soldering the Pico's headers
        Soldering the headers
    Implementing the "Hello World!" example
        MicroPython
    Implementing the LED-blinking example
        Description of the code sample
        CircuitPython example
        Launching Mu
        Second LED-blinking example
        CircuitPython or MicroPython?
    Identifying useful add-on hardware for the Pico
        Pico Breadboard Kit (USD 19.31)
        Pico GPIO Expansion Board (USD 10.34)
        Pico HAT Expansion (USD 13.79)
        Grove Shield for Pi Pico (USD 3.90)
        Pimoroni Pico Decker (Quad Expander) (USD 16.55)
    Summary
Chapter 2: Serial Interfaces and Applications
    Technical requirements
    Installing requisite libraries
        HTU21D-F temperature sensor
        DHT20 temperature and humidity sensor
        OLED display (driven by SSD1306)
        Wireless pack
    Using the UART interface to communicate between two Pico boards
        The UART interface
        Setting up the Pico
        Programming the Pico boards
        Testing the code
        Applications of the UART interface
    Interfacing sensors using the I2C interface
        Introduction to the I2C interface
        Pull-up resistors
        Testing the HTU21D-F temperature sensor
        HTU21D-F temperature sensor code
        Testing the DHT20 temperature sensor
        AHT20 temperature sensor code
        The Feather RP2040 board
        Troubleshooting
    Displaying temperature data using the SPI
        The Serial Peripheral Interface (SPI)
        Wiring up the display
        Displaying the temperature and humidity data
        The LILYGO RP2040 board
    Setting up the wireless pack
    Summary
Chapter 3: Home Automation Projects
    Technical requirements
    Installing the requisite libraries
        NeoPixel
        Wireless pack
    Interfacing sensors
    Controlling appliances
    Publishing sensor events to the cloud
        Setting up Adafruit IO
        Publishing events
    Controlling LED strips
    Introducing the RP2040 Connect
    Installing CircuitPython on the RP2040 Connect
        Connecting the RP2040 to the internet 
    Summary
Chapter 4: Fun with Gardening!
    Technical requirements
    Why gardening?
    Installing the requisite libraries
        Soil sensor
        Wireless pack
        NeoPixel
    Setting up the soil sensor
    Setting up the wireless pack
    Setting up the NeoPixel LED 
    Publishing data to ThingSpeak
    Putting it all together
    Summary
Section 2: Learning by Making
Chapter 5: Building a Weather Station
    Technical requirements
    Conducting citizen science experiments
    Installing the requisite libraries
        The AM2315 sensor
        BME280 sensor
        VEML6075 UV light sensor
    Testing the sensors
        Testing the BME280 sensor 
        Testing the AM2315 temperature/humidity sensor
        Testing the VEML6075 sensor
        Testing the weather meter sensors
        Testing the wireless pack
    Assembling and testing the weather station
        Next steps
    Summary
Chapter 6: Designing a Giant Seven-Segment Display
    Technical requirements 
    Inspiration for the project
        Potential use cases
    Installing the required libraries
        Wireless pack
    Selecting a seven-segment display
    Wiring up the giant seven-segment display
    Writing the drivers for the giant seven-segment display
    Using the display
        Simple web server
        Serial port example
        Tracking physical activity
    Putting it all together
    Summary
Chapter 7: Designing a Visual Aid for Tracking Air Quality
    Technical requirements
    Inspiration for the project
    Installing requisite libraries
        Stepper motor
        Wireless pack
        SCD30 CO2 sensor
    Using public data sources for air quality data
        Running the query on a Pico
    Interfacing a CO2 sensor with the Pico
    Interfacing the stepper motor
    Building the display
        Making an interactive display
    Summary
Section 3: Advanced Topics
Chapter 8: Building Wireless Nodes
    Technical requirements
    Installing requisite libraries
        Adafruit Bluefruit LE SPI Friend
        Optional – the LoRa module
        Optional – the CO2 sensor
    Interfacing a Bluetooth Low Energy module 
        Publishing sensor data via the Bluetooth module
    Interfacing a Sigfox module
        What is Sigfox?
        Sigfox module
        Setting up the Sigfox module
    Interfacing a LoRa module
        What is LoRa?
        Considering an example scenario
    Summary
Chapter 9: Let's Build a Robot!
    Technical requirements 
    Installing the prerequisites
        Installing the batteries
    Controlling the LEDs
    Motor selection and control
        DC motors
        Stepper motors
        Servo motors
        DC motor control
        Servo motor control
    Testing the sensors
        Ultrasonic sensor
        Line-following sensor
    Testing the robot
        Robotics contests
    Summary
Chapter 10: Designing TinyML Applications
    Technical requirements
        Optional hardware
    Introducing TinyML
        Introducing the Pico4ML
    Keyword recognition in audio samples
        Edge Impulse
    Classifying images 
    Developing edge devices
    Summary
Chapter 11: Let's Build a Product!
    Technical requirements
    Understanding the Pico phone
    Capturing the requirements
        Selecting components
        Building a proof-of-concept
        Installing the requisite libraries
        Testing the Notecard
        Testing the keypad
    Designing a PCB
        Schematic capture
        PCB layout
        Enclosure selection
        Gerber file generation
        Board fabrication
        Assembling the PCB
    Bringing up the board
        Final assembly and testing
    Taking the project forward
        Replacing the Pico
        Pimoroni PGA2040 – USD 9.05
        RP2040 Stamp – USD 14.55
    Summary
Chapter 12: Best Practices for Working with the Pico 
    Technical requirements
    Upgrading your Pico's firmware
    Programming the Pico using the Arduino IDE
        Downloading and installing the Arduino IDE
        Installing a board package for the Pico
    Programming in C/C++ using the Pico SDK
        Debuggers for the Raspberry Pi Pico
    Tools to aid with prototyping and product development
        Breadboard with Pico's pinout labels
        Power profiling your application
        Nordic Power Profiler Kit – USD 81.25
        Joulescope – USD 999
        Programming the PIOs
    Summary
    Why subscribe?
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Mainframes & Minicomputers Microprocessors & System Design Peripherals PIC Microcontroller Programming Languages Python Single Board Computers

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