ESP32 & Arduino Memory and Power Management
A comprehensive guide to understanding and optimizing memory usage and power consumption on ESP32 and Arduino platforms.
About This Book
This book provides a deep dive into the memory architecture (RAM and ROM/Flash) of ESP32 and Arduino (AVR) microcontrollers, and explains how to leverage their sleep modes and power management features to build efficient, battery-friendly embedded systems.
Who This Book Is For
- Embedded developers working with ESP32 or Arduino boards
- Makers building battery-powered IoT devices
- Students learning microcontroller programming and hardware constraints
- Anyone hitting memory limits or wanting to extend battery life
What You’ll Learn
- How RAM and Flash/ROM are organized on ESP32 and Arduino (AVR) chips
- Techniques to reduce RAM usage: PROGMEM, F() macro, stack/heap management
- Flash storage options: partitions, EEPROM emulation, LittleFS, SPIFFS
- All sleep modes available on ESP32 and Arduino and when to use each
- Power optimization strategies: clock scaling, peripheral shutdown, WiFi/BT control
- Practical end-to-end examples for battery-powered sensor nodes
Book Structure
The book progresses from hardware fundamentals to practical optimization techniques, with concrete code examples throughout.
Author Notes
Code examples use C/C++ (Arduino sketches, .ino files). Some measurement scripts are provided in Python for host-side tooling.
Table of Contents