Creative DIY Microcontroller Projects with TinyGo and WebAssembly

A practical guide to building embedded applications for low-powered devices, IoT, and home automation

Tobias Theel 지음

Packt(GCO Science) 2021년 05월 14일 출간

작품소개

책소개

Explore embedded programming, and get hands-on with real-world embedded projects relating to IoT, low-powered devices, and other complex systems using TinyGo and WebAssembly

▶Book Description
While often considered a fast and compact programming language, Go usually creates large executables that are difficult to run on low-memory or low-powered devices such as microcontrollers or IoT. TinyGo is a new compiler that allows developers to compile their programs for such low-powered devices. As TinyGo supports all the standard features of the Go programming language, you won't have to tweak the code to fit on the microcontroller.

This book is a hands-on guide packed full of interesting DIY projects that will show you how to build embedded applications. You will learn how to program sensors and work with microcontrollers such as Arduino UNO and Arduino Nano IoT 33. The chapters that follow will show you how to develop multiple real-world embedded projects using a variety of popular devices such as LEDs, 7-segment displays, and timers. Next, you will progress to build interactive prototypes such as a traffic lights system, touchless hand wash timer, and more. As you advance, you'll create an IoT prototype of a weather alert system and display those alerts on the TinyGo WASM dashboard. Finally, you will build a home automation project that displays stats on the TinyGo WASM dashboard.

By the end of this microcontroller book, you will be equipped with the skills you need to build real-world embedded projects using the power of TinyGo.

▶What You Will Learn
-Discover a variety of TinyGo features and capabilities while programming your embedded devices
-Explore how to use display devices to present your data
-Focus on how to make TinyGo interact with multiple sensors for sensing temperature, humidity, and pressure
-Program hardware devices such as Arduino Uno and Arduino Nano IoT 33 using TinyGo
-Understand how TinyGo works with GPIO, ADC, I2C, SPI, and MQTT network protoco

목차

▶TABLE of CONTENTS
-Chapter 1: Getting Started with TinyGo
-Chapter 2: Building a Traffic Lights Control System
-Chapter 3: Building a Safety Lock Using a Keypad
-Chapter 4: Building a Plant Watering System
-Chapter 5: Building a Touchless Handwash Timer
-Chapter 6: Building Displays for Communication using I2C and SPI Interfaces
-Chapter 7: Displaying Weather Alerts on the TinyGo Wasm Dashboard
-Chapter 8: Automating and Monitoring Your Home through the TinyGo Wasm Dashboard
-Assessments

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▶What this book covers
- Chapter 1, Getting Started with TinyGo, sees you set up TinyGo and compile your first program!

- Chapter 2, Building a Traffic Lights Control System, has you build a traffic lights control system, including pedestrian lights and a button; you will learn how to make use of Goroutines in TinyGo.

- Chapter 3, Building a Safety Lock Using a Keypad, looks at making use of a 4x4 keypad and a servomotor to build a lock that opens when the correct passcode has been entered.

- Chapter 4, Building a Plant Watering System, explains how to use different types of sensors to build an automatic plant watering system, so you do not have to water your plants manually anymore!

- Chapter 5, Building a Touchless Handwash Timer, explores using a four-digit, sevensegment display and an ultrasonic distance sensor to recognize the movement of a nearby object to start a timer that will tell us when we have washed our hands for long enough.

- Chapter 6, Building Displays for Communication Using I2C and SPI Interfaces, explains the concepts of Inter-Integrated Circuit (I2C) and Serial Peripheral Interface (SPI) by having you use displays that communicate using I2C and SPI buses. By the end of the chapter, you will know how to use different types of displays in TinyGo.

- Chapter 7, Displaying Weather Alerts on the TinyGo Wasm Dashboard, is where you will build and serve a Wasm application that displays sensor data sent from an Arduino Nano 33 IoT over Wi-Fi.

- Chapter 8, Automating and Monitoring Your Home through a TinyGo Wasm Dashboard, explains how to control and monitor devices in your home using a Wasm dashboard.

- Appendix？"Go"ing Ahead, covers some concepts that did not find their way into the previous chapters.

출판사 서평

▶ Preface
If JavaScript or C# can run on microcontrollers, then Go can do it even better. While standard Go produces huge binaries, TinyGo produces binaries that fit on the smallest devices. Why should you choose Go for microcontroller and Wasm (short for WebAssembly) programming? My favorite reasons are that Go is easy to learn, easy to read, and easy to write. Also, Go comes with a powerful standard library that is loosely coupled and has strong concurrency capabilities included.

If you love Go as a language, then this book is for you. After working through this book, you'll have all the tools and knowledge you need to build all the microcontroller projects that you have ever dreamed of. Plus, as a further benefit, you will be able to build dashboards and home control apps using Wasm for your home automation projects. All of this can be achieved using TinyGo.

If you have never worked with microcontrollers before, here are some reasons why you should try it out:

- If you already are a programmer, it is a cool thing to see code affecting real-world appliances. It really is a great feeling to complete a project and finally see the motor turning, the LED blink, the buzzer beep, and so on.
- You will be constantly learning new things and gaining a deeper understanding of how computers work in general, as you will become familiar with different types of bus systems, protocols, hardware interfaces, and much more.
- The possibilities are virtually limitless when you're playing with microcontrollers. You are not bound to what is available on the market, as you can simply build everything on your own.
- You can learn how to write small, efficient programs to tell a microcontroller what you want from it. This will also help you become a better developer in general.
- You can contribute to cool projects and get in touch with great communities of like-minded people.

작가정보

저자(글) Tobias Theel

Tobias Theel works as the Technical Lead and DevOps for a German FinTech startup fino and since 2020 he has also started working for RegTech startup, ClariLab, as Lead Software Engineer. Being a software architect and an expert for Go and TinyGo alongside C# and Java, he is also iSAQB certified. Theel is a highly enthusiastic community contributor and is among the top 10% responders in C# and Unity3D as well as top 20% responders in .NET, Go, and Visual Studio on StackOverflow.When not programming for fino or ClariLab, he can be found developing games, mainly at game jams such as the Ludum Dare Jam, where he develops games from scratch within 72 hours. As an active speaker at tech talks and a participant for numerous hackathons, Theel loves to share his knowledge of software development with fellow enthusiasts.