The primary objective of writing this book is to provide a platform to automate agricultural field with various sensor and throw the data on cloud with internet of thing. The book provides the basic knowledge of the programming and interfacing of the devices with IoT modem and programming. The aim is to explain the basic steps to understand the IoT and its application in agriculture field. It would be a reference book for Postgraduate/ undergraduate engineering students. Students from Electronics, Electrical, Mechatronics, Robotics, Mechanical, Computer science can avail the book for their projects and research. The concept which makes this book unique is a book programming based real time project prototypes. This book is entirely based on the practical experience of the authors while undergoing projects with the students and industries.