The Internet of Things (IoT) has emerged as a transformative technology, connecting everyday objects to the internet and enabling them to communicate and interact with each other. This connectivity opens up a world of possibilities, allowing for smarter homes, more efficient industries, and improved quality of life.In this book, we will explore the fascinating world of IoT and delve into the capabilities of NodeMCU, an open-source development board based on the ESP8266 Wi-Fi module. NodeMCU provides a versatile platform for building IoT projects, offering seamless integration with various sensors, actuators, and cloud services.These examples serve as practical illustrations to help you build your own IoT projects with NodeMCU. We hope this book serves as a valuable resource for anyone interested in exploring the world of IoT and harnessing the power of NodeMCU. Whether you are a beginner or an experienced developer, we believe this book will equip you with the knowledge and skills to create innovative and impactful IoT solutions. Let's embark on this exciting journey together.