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)

Monitoring the serial port

As we are writing debug logs or other messages to the serial port, we need a convenient way to monitor these logs. An easy way to monitor the serial port on all operating systems is to use PuTTy.

Let's first look at how to install PuTTy on various platforms:

  • Linux: On Linux, PuTTy is available through apt. We can install it using the following command:
    sudo apt install putty

    Alternatively, we can find tar.gz here:

  • MacOS: On Mac, PuTTy is available using brew. We can install it using the following command:
    brew install Putty
  • Windows: On Windows, we can download PuTTy from here: We simply download and run the .msi file.

As we have now installed PuTty, it is time to monitor our serial port:

  1. Make sure the program from the previous section is flashed on your microcontroller and the USB cable is plugged in.
  2. The next step is starting PuTTy...