The primary intention of composing this book is to offer a basis for automating agricultural fields using various sensors and transmitting the data to the cloud through the internet of things. This book supplies the fundamental knowledge required for programming and connecting devices to an IoT modem, as well as the essential steps for comprehending IoT and its application in the agricultural field. It serves as a useful resource for postgraduate and undergraduate engineering students, particularly those studying Electronics, Electrical, Mechatronics, Robotics, Mechanical, and Computer Science. The distinctive feature of this book is that it provides programming-based real-time project prototypes, which are based on the practical experiences of the authors while working on projects with students and industries.