The Official ESP32 Book
The Chinese company Espressif Systems has recently developed a new microcontroller chip named the ESP32. In addition to all the ESP8266 features, the ESP32 provides Bluetooth communications capability, larger SRAM data memory, more GPIOs, more interface signals, touch sensor, temperature sensor, higher CPU speed, CAN bus connectivity, higher resolution ADC converters, DAC converters, and security features. This book is an introduction to the ESP32 processor and describes the main hardware and software features of this chip. The main aim of the book is to teach the reader how to use the ESP32 hardware and software in practical projects, especially using the highly popular ESP32 development board. Many basic, simple, and intermediate level projects are given in the book based on the ESP32 DevKitC development board, using the highly popular Arduino IDE and also the MicroPython programming language. The projects have been organized in increasing levels of difficulty. The ESP32 hardware kit is available from Elektor, especially prepared for the book. The kit contains all the components used in the projects in this book. With the help of this hardware kit it should be easy and fun to build the projects in the book.
Why Read This Book
You will get a hands‑on, project‑driven introduction to the ESP32 that teaches both the hardware capabilities and the practical firmware techniques you need to build real IoT devices. The book emphasizes common peripherals, Wi‑Fi and Bluetooth use cases, and step‑by‑step examples using popular ESP32 development boards so you can move quickly from concept to working prototype.
Who Will Benefit
Hobbyists and embedded engineers with basic programming experience who want a practical, project‑oriented introduction to the ESP32 and its Wi‑Fi/Bluetooth features.
Level: Beginner — Prerequisites: Basic familiarity with C or C++ programming, serial communication (UART), and fundamental electronics (GPIO, power, and simple sensors).
Key Takeaways
- Program and flash ESP32 development boards using common toolchains (Arduino core and an introduction to the Espressif SDK).
- Use Wi‑Fi and Bluetooth connectivity to build simple IoT applications and exchange data with servers or mobile devices.
- Interface sensors and actuators using GPIO, ADC/DAC, PWM, I2C, SPI, UART and CAN where supported.
- Implement timers, interrupts, and simple multitasking patterns (FreeRTOS basics) for responsive firmware.
- Apply power management, touch and temperature sensor features, and basic security functions available on the ESP32.
- Assemble end‑to‑end example projects that integrate hardware wiring, firmware, and debugging/serial monitoring.
Topics Covered
- Introduction to the ESP32 and development boards
- ESP32 architecture and key hardware features
- Getting started: toolchain, flashing, and serial monitoring
- GPIO, timers, PWM, and interrupt handling
- Analog: ADC and DAC usage and calibration
- Serial buses: UART, I2C, SPI and CAN overview
- Wi‑Fi fundamentals and building networked applications
- Bluetooth and Bluetooth Low Energy (BLE) basics
- Sensors, touch inputs, temperature sensor, and peripherals
- FreeRTOS basics and multitasking on the ESP32
- Power management, security features, and best practices
- Hands‑on projects: sensors, actuators, and simple IoT nodes
- Appendices: pinouts, common commands, troubleshooting and resources
Languages, Platforms & Tools
How It Compares
More project‑focused and beginner‑friendly than Neil Kolban's deep technical ESP32 reference; less exhaustive on ESP‑IDF internals than the official Espressif Programming Guide but quicker to get you building.
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