This book is an exploration of Arduino programming. The first part of the book guides you in understanding what Arduino is and how it is used. The process of installation in Arduino has is also discussed. Arduino programs are made up of various parts. This book explains to you the structure of Arduino programs so as to understand its various parts. The Arduino programming language supports the use of variables and constants. This book guides you on how to declare and use them in your Arduino programs. Operators, which enable us to perform both mathematical and logical operations in a programming language, are of great help. This book guides you on how to use the various operators supported in Arduino. Control statements allow us to control how the logic flows in our programs. You are guided on how to implement flow control in your Arduino programs. Loops, which are a good mechanism for the implementation of iteration, are covered in detail. Functions, as well as the I/O functions are also explored. The book provides you with sample projects in Arduino which can help you learn how to create applications. You will learn how to blink the LED, fade the LED, read the analog voltage, control the mouse button, create a LED bar graph, and logout your keyboard. The following topics are discussed in this book: - What is Arduino? - Installation - Structure of Arduino Programs - Variables and Constants - Operators - Control Statements - Loops in Arduino - Functions - Inter Integrated Circuit - I/O Functions - Sample Arduino Projects - Mouse Button Control