The dual-core architecture of the ESP32 (two Xtensa LX6 cores) combined with the FreeRTOS real-time operating system enables efficient task parallelization. Below are the key technical points, practical recommendations, and code examples for ESP32 Dual-Core Task Allocation: 1. Core Strategies for Dual-Core Task Allocation Core Responsibility Division: Core 0 is typically used to run the … Read more
Comprehensive Guide to ESP32 SD Card File Operations 1. Hardware Connection and Configuration Hardware Requirements ESP32 Development Board Micro SD Card Module (SPI Interface) Micro SD Card (Recommended 4GB-32GB, FAT32 format) Several Dupont Wires Wiring Diagram SD Card Module → ESP32 Pins —————— CS → GPIO5 (customizable) SCK → GPIO18 MOSI → GPIO23 MISO → … Read more
Introduction: From “Lighting Tool” to “IoT Dominator” “In 2016, a Chinese chip emerged, priced at only 1/3 of Arduino, yet 5 times more powerful – it is called ESP32, and today, 1 in every 3 IoT devices globally uses it.” Today, we will discuss how this “budget-friendly” chip has revolutionized hardware development, even causing concern … Read more
1 Project Background I deployed the open-source project XiaoZhi Backend Service (replacing the official service <span>https://xiaozhi.me</span>) in a Windows + WSL2 Ubuntu 22.04 environment using Docker. The deployment success log is as follows: Key Objective: To integrate the self-built service with the ESP32 smart voice hardware, achieving OTA (Over-The-Air) firmware updates and WebSocket communication. 2 … Read more
Would you like to assemble a mini drone that can fly stably and be controlled by a smartphone using an ESP32 development board and a few expansion modules? Recently, Espressif has brought an exciting project called esp-drone! This is an open-source drone firmware based on ESP32/ESP32-S2/ESP32-S3. Ultra-Simplified Hardware Composition ESP-Drone uses a modular design approach, … Read more
WiFi Weather ClockWiFi Weather ClockProject Overview The WiFi Weather Clock: This project is made using the ESP32 and ST7789-LCD color screen, capable of displaying real-time time, weather, temperature and humidity, air quality index, wind speed, wind direction, etc. The center of the screen can also display an animation, and by long-pressing a button, different animation … Read more
ESP32 Gas Sensor Application Guide 1. Basic Principles and Selection Gas sensors operate by detecting electrochemical changes (such as resistance changes) caused by target gases. Common types include: MQ Series detects specific gases (such as smoke, liquefied gas) and outputs an analog voltage. Digital Sensors directly output I²C digital signals (such as BME680 for multi-parameter … Read more
Recently, after upgrading the ESP32 firmware to LVGL 9.2.2 + MicroPython 1.25, previously functioning code began to experience crashes and restarts. At this point, the following error message can be seen: A fatal error occurred. The crash dump printed below may be used to help determine what caused it. If you are not already running … Read more
In the era of the Internet of Things, more and more devices need to have AI capabilities, such as smart homes, wearable devices, and more. However, deploying complex AI models on resource-constrained micro devices has always been a challenge. Now, with ESP-TF Lite Micro, everything becomes easy and simple! This article will provide a detailed … Read more
The power optimization hardware design for the ESP32 is the cornerstone of achieving ultra-low power systems, requiring meticulous control over power architecture, peripheral circuits, PCB layout, and more. Below are hardware-level optimization solutions validated by engineering: 1. Power Topology Optimization 1. Efficient Power Conversion Solutions Scenario Recommended Solution Static Current Conversion Efficiency Key Models Input … Read more