The book was designed as an introduction for those who are new to digital electronics and microcontrollers and want to dive into the world of embedded systems, with a project-based approach for the ease of readers. Basic knowledge of digital circuits and C / C ++ programming is desirable, but it is written for people just starting out with digital electronics projects. It was intended to acquire knowledge while creating projects such as measuring the temperature and air quality of the environment, to continue with projects that have an Internet connection with a focus on IoT, and end with proj...