A C development guide for Espressif’s ESP32 RISC-V family, including ESP32-C2, C3, C5, C6, H2, and relevant P4 content. Using ESP-IDF and VS Code, it covers GPIO, PWM, SPI, I2C, 1-Wire, UART, Wi-Fi, FreeRTOS, low-power features, RTC, RMT, touch sensing, and direct hardware access for RISC-V based ESP32 development.

In this hands-on project, you’ll learn how to control devices remotely using an ESP32 board, a relay, MicroPython, and tunneling software. We’ll guide you through setting up the hardware with a breadboard and relay module, installing the Thonny IDE, flashing MicroPython firmware, and running a web server on the ESP32 to control devices via your local network. You’ll also set up ngrok for secure remote access from anywhere. By the end, you’ll have a fully functional web-controlled relay switch, with code available for download. All steps are done in a Windows 11 environment but can be adapted to other systems.

The ESP32 is a powerful and affordable microcontroller, ideal for both simple and advanced applications thanks to its rich feature set. MicroPython, based on Python 3, is an excellent and easy-to-use language for programming the ESP32. Despite being slower than C, it’s often fast enough and far more accessible for beginners. After a quick setup, you can start coding using Thonny or PyCharm. This book guides you through using the ESP32’s GPIO pins with sensors, servos, motors, and ADCs. You’ll also learn about PWM, SPI, I2C, 1-Wire, hardware access, SD cards, power management, the RTC, RMT, touch sensors, and Wi-Fi capabilities.

A practical guide to programming ESP32 in C with ESP-IDF and VS Code. The book introduces GPIO, PWM, motor control, SPI, I2C, 1-Wire, UART, Wi-Fi, FreeRTOS, low-power modes, RTC, RMT, touch sensing, and direct hardware access, helping developers build a strong foundation for efficient ESP32 development.