Book Image

Creative DIY Microcontroller Projects with TinyGo and WebAssembly

By : Tobias Theel
Book Image

Creative DIY Microcontroller Projects with TinyGo and WebAssembly

By: Tobias Theel

Overview of this book

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.
Table of Contents (13 chapters)

Checking out the Hello World of Things

A Hello World program is the typical way to start the journey in a new programming language. A Hello World program on a microcontroller looks a bit different compared to a normal Hello World program. We are going to write a Hello World program to let the built-in LED blink. Let's get started!

Getting the requirements ready

To get started with our program, we need the following:

  • An Arduino UNO
  • One USB cable to connect it to your computer

Preparing the project

Follow these steps closely for your project:

  1. Create a new folder named ch1 in the root of your project.
  2. Inside the folder, we need to create a folder named hello-world-of-things and inside it, we are going to create a new main.go file.
  3. Your structure should now look like the following:

Figure 1.12 – The project structure

As we have now prepared our project, we can go on and write our first program.