Book Image

DIY Microcontroller Projects for Hobbyists

By : Miguel Angel Garcia-Ruiz, Pedro Cesar Santana Mancilla
Book Image

DIY Microcontroller Projects for Hobbyists

By: Miguel Angel Garcia-Ruiz, Pedro Cesar Santana Mancilla

Overview of this book

We live in a world surrounded by electronic devices, and microcontrollers are the brains of these devices. Microcontroller programming is an essential skill in the era of the Internet of Things (IoT), and this book helps you to get up to speed with it by working through projects for designing and developing embedded apps with microcontroller boards. DIY Microcontroller Projects for Hobbyists are filled with microcontroller programming C and C++ language constructs. You'll discover how to use the Blue Pill (containing a type of STM32 microcontroller) and Curiosity Nano (containing a type of PIC microcontroller) boards for executing your projects as PIC is a beginner-level board and STM-32 is an ARM Cortex-based board. Later, you'll explore the fundamentals of digital electronics and microcontroller board programming. The book uses examples such as measuring humidity and temperature in an environment to help you gain hands-on project experience. You'll build on your knowledge as you create IoT projects by applying more complex sensors. Finally, you'll find out how to plan for a microcontroller-based project and troubleshoot it. By the end of this book, you'll have developed a firm foundation in electronics and practical PIC and STM32 microcontroller programming and interfacing, adding valuable skills to your professional portfolio.
Table of Contents (16 chapters)

Showing sensor data results over the internet

Having objects connected to the internet will allow you to access their data from anywhere that has a connection to that network.

This is why we gave our project the ability to become a web server and thus be able to access the state of the plant pot from any web browser.

For this project, access can only be from our Wi-Fi network. To test its operation, we are going to access the developed web app from any mobile or desktop web browser. Proceed as follows:

  1. Open a web browser and go to the IP address of our server (see Figure 10.12). You should see our landing page to monitor our plant pot, as shown in the following screenshot:
    Figure 10.13 – Web app landing page

    Figure 10.13 – Web app landing page

  2. On the landing page, you can simply press the button every time you want to measure the humidity of the plant pot. If the soil is dry, we will see a representative image and a legend stating Soil is too dry, as illustrated in the following screenshot:
    Figure 10.14 – Web app screen for dry soil

    Figure...