This book is also designed in such a way that the learner can apply good project development practices, where the projects are constructed from the conceptual design until execution (implementation). This “Practical Guide to IR4.0 with Arduino for Beginners” briefly reports on Arduino’s history, system architecture, tips and tricks, and a few basic projects that can be developed with this awesome micro-controller. Additionally, this book will also elaborate on how Arduino complements the Fourth Industrial Revolution (IR4.0) by integrating numerous systems into an automated real- time platform. At least three out of nine pillars in IR4.0 can be practised from the projects in this book: cloud computing, Internet of Things (IoT) and system integration.