Textbook in PDF format Develop a comprehensive understanding of IoT product development using ESP32 microcontrollers. This book takes readers on a journey from sensor interface example to an ESP32-based product example where we discuss all aspects of a product including rapid prototyping, cloud interface, product provision, and device fleet management. We will start with an introduction to the ESP32 microcontroller series and discuss programming language options for the ESP32 platform. Next, we explore publishing sensor data to the cloud using the ESP32. This is followed by a review of using the ESP32 to pull data from a public source and display it using a visual aid. The next few chapters demonstrate the construction of a low-cost Bluetooth sensor node using the ESP32, data aggregation with the ESP32, where collect and publish data aggregated from low-power radio networks, and the development of edge devices using the ESP32. The final chapter shows how to build an ESP32-enabled product that publishes data to the cloud, giving you confidence to start building on your own. The ESP32 family of microcontrollers is well suited for the Internet of Things (IoT) due to its robust computing capabilities, extensive interfacing features, and advanced communication capabilities. There is also the cost compatibility that renders the series of microcontrollers ideal for the democratization of education and deployment worldwide. As a rough estimate, different flavors of ESP32 cost less than $1 (at volume). They can be used for IoT product development in various application areas. Besides our own work, there is a growing body of specific resources and analogs from similar microcontrollers and SBCs whose project embodiments can be adapted into ESP32-based applications. Lower costs and openness in software and hardware embodiments also make such products ideal for use in and by communities of varying societal needs, including underserved communities in areas including and not limited to healthcare, environmental monitoring, smart wearables, and others. So which language should we choose to get started with IoT product development? In this book, we will use MicroPython for all the projects. It enables us to explain IoT product development with the ESP32 microcontrollers to a broader audience. It also allows us to demonstrate the power of MicroPython by rapidly integrating components like sensors to the ESP32 and the ability to iterate through the design. The last two chapters will also present examples using the Arduino IDE. What You Will Learn: Learn about the rich and powerful features of the ESP32 family of microcontrollers Get a thorough idea of rapid prototyping tools and techniques for IoT product development Understand the various communication protocols and standards available for IoT product development Who Is This Book For: Readers with some experience with electronics and at least one programming language will be able to make the most of this book