1/6: The Graphic Novel Issue #1: What if the Attack on the U.S. Capitol Succeeded?

From smart sensors to cloud integration and the world of TinyML, this book is your comprehensive guide to the IoT ecosystem, using the ESP32 and industry-standard tools and technologies Key Features: Build IoT projects from scratch using ESP32 Customize solutions, take them to cloud, visualize real-time data, implement security features Practice using a variety of hands-on projects such as an audio player, smart home, and more Book Description: ESP32, a low-cost and energy-efficient system-on-a-chip microcontroller, has become the backbone of numerous WiFi devices, fueling IoT innovation. This book offers a holistic approach to building an IoT system from the ground up, ensuring secure data communication from sensors to cloud platforms, empowering you to create production-grade IoT solutions using the ESP32 SoC. Starting with IoT essentials supported by real-world use cases, this book takes you through the entire process of constructing an IoT device using ESP32. Each chapter introduces new dimensions to your IoT applications, covering sensor communication, the integration of prominent IoT libraries like LittleFS and LVGL, connectivity options via WiFi, security measures, cloud integration, and the visualization of real-time data using Grafana. Furthermore, a dedicated section explores AI/ML for embedded systems, guiding you through building and running ML applications with tinyML and ESP32-S3 to create state-of-the-art embedded products. This book adopts a hands-on approach, ensuring you can start building IoT solutions right from the beginning. Towards the end of the book, you'll tackle a full-scale Smart Home project, applying all the techniques you've learned in real-time. Embark on your journey to build secure, production-grade IoT systems with ESP32 today! What You Will Learn: Explore ESP32 with IDE and debugging tools for effective IoT creation Drive GPIO, I2C, multimedia, and storage for seamless integration of external devices Utilize handy IoT libraries to enhance your ESP32 projects Manage WiFi like a pro with STA & AP modes, provisioning, and ESP Rainmaker framework features Ensure robust IoT security with secure boot and OTA firmware updates Harness AWS IoT for data handling and achieve stunning visualization using Grafana Enhance your projects with voice capabilities using ESP AFE and Speech Recognition Innovate with tinyML on ESP32-S3 and the Edge Impulse platform Who this book is for: If you are an embedded software developer, an IoT software architect or developer, a technologist, or anyone who wants to learn how to use ESP32 and its applications, this book is for you. A basic understanding of embedded systems, programming, networking, and cloud computing concepts is necessary to get started with the book. Table of Contents: Introduction to IoT development and the ESP32 platform Understanding the Development Tools Using ESP32 Peripherals Employing Third-Party Libraries in ESP32 Projects Project - Audio player Using Wi-Fi Communication for Connectivity ESP32 Security Features for Production-Grade Devices Connecting to Cloud Platforms and Using Services Project - Smart Home Machine Learning with ESP32 Developing on Edge Impulse Project - Baby Monitor Cover Copyright Contributors Table of Contents Preface Chapter 1: Introduction to IoT development and the ESP32 platform Technical requirements Understanding the basic structure of IoT solutions IoT security The ESP32 product family ESP32 series Other SoCs Development platforms and frameworks RTOS options Summary Chapter 2: Understanding theDevelopment Tools Technical requirements ESP-IDF The first application ESP-IDF Terminal PlatformIO Hello world with PlatformIO PlatformIO Terminal FreeRTOS Creating the producer-consumer project Coding application Running the application Debugging Unit testing Creating a project Coding the application Adding unit tests Running unit tests Summary Questions Further reading Chapter 3: Using ESP32 Peripherals Technical requirements Driving General-Purpose Input/Output (GPIO) Turning an LED on/off by using a button Creating a project Coding the application Troubleshooting Interfacing with sensors over Inter-Integrated Circuit (I2C) Developing a multisensor application Creating a project Coding the application Troubleshooting Integrating with SD cards over Serial Peripheral Interface (SPI) Adding SD card storage Creating the project Coding the application Testing the application Troubleshooting Audio output over Inter-IC Sound (I2S) Developing a simple audio player Coding the application Testing the application Developing graphical user interfaces on Liquid-Crystal Display (LCD) A simple graphical user interface (GUI) on ESP32 Creating the project Coding the application Testing the application Summary Questions Further reading Chapter 4: Employing Third-Party Libraries in ESP32 Projects Technical requirements LittleFS Creating a project Coding the application Testing the application Nlohmann-JSON Creating a project Coding the application Testing the application Miniz Creating a project Coding the project Testing the application FlatBuffers Creating a project Coding the application Testing the application LVGL Designing the GUI Creating a project Coding the application Testing the application ESP-IDF Components library Espressif frameworks and libraries Summary Questions Chapter 5: Project – Audio Player Technical requirements The feature list of the audio player Solution architecture Developing the project Designing the GUI Creating the IDF project Coding the application Testing the Project New features Troubleshooting Summary Chapter 6: Using Wi-Fi Communication for Connectivity Technical requirements Connecting to local Wi-Fi Creating a project Coding the application Testing the application Troubleshooting Provisioning ESP32 on a Wi-Fi network Creating a project Coding the application Testing application Troubleshooting Communicating over MQTT Installing the MQTT broker Creating a project Coding the application Testing the application Troubleshooting Running a RESTful server on ESP32 Creating the project Coding the application Testing the application Consuming RESTful services Creating the project Coding the application Testing the application Troubleshooting Summary Questions Further reading Chapter 7: ESP32 Security Features for Production-Grade Devices Technical requirements ESP32 security features Secure Boot v1 Secure Boot v2 Digital Signature (DS) ESP Privilege Separation Over-the-air updates Upgrading firmware from an HTTPS server Preparing the server Creating a project Coding the application Testing the application Troubleshooting Utilizing RainMaker for OTA updates Configuring RainMaker Creating a project Coding the application Testing the application Troubleshooting Sharing data over secure MQTT Creating a project Coding the application Testing the application Troubleshooting Summary Questions Further reading Chapter 8: Connecting to Cloud Platforms and Using Services Technical requirements Developing on AWS IoT Hardware setup Creating an AWS IoT thing Configuring a project Coding the application Testing the application Troubleshooting Visualizing with Grafana Creating a Timestream database Creating a Grafana workspace Creating a Grafana dashboard Troubleshooting Integrating an ESP32 device with Amazon Alexa Updating the thing shadow Creating the lambda handler Coding the lambda handler Creating the smart home skill Troubleshooting Summary Questions Further reading Chapter 9: Project – Smart Home Technical requirements The feature list of the smart home solution Solution architecture Setting up plug hardware Setting up multisensor hardware Software architecture Implementation Preparing common libraries Creating IDF component Coding IDF component Developing plug Adding plug node Coding application Developing multisensor Adding sensor node Adding a GUI Coding the application Testing project Testing plug Testing the multisensor application Using smart home features Troubleshooting New features Summary Chapter 10: Machine Learning with ESP32 Technical requirements Learning the ML basics ML approaches to solve computing problems Supervised learning Unsupervised learning Reinforced learning TinyML pipeline Data collection and preprocessing Designing and training a model Optimizing and preparing the model for deployment Running inference on an IoT device Running inference on ESP32 Creating the project Coding the application Testing the application Developing a speech recognition application Creating the project Coding the application Testing the application Troubleshooting Summary Questions Further reading Chapter 11: Developing on Edge Impulse Technical requirements An overview of Edge Impulse Cloning an Edge Impulse project Using the ML model on ESP32 The model library The application code Testing the application Troubleshooting Next steps for TinyML development The Netron app tinyML Foundation ONNX format Project ideas Image processing with ESP32-S3-EYE Anomaly detection Summary Questions Further reading Chapter 12: Project – Baby Monitor Technical requirements The feature list of the baby monitor Solution architecture Implementation Generating the ML model Creating an IDF project Developing the application Testing the project Troubleshooting New features Summary Answers PacktPage Other Books You May Enjoy Index