AsyncMQTT_ESP32

ESP32 Development Board Selection and Hardware Design: Comparison of Mainstream Development Board Hardware

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ESP32 Development Board Selection and Hardware Design: Comparison of Mainstream Development Board Hardware

The following is a hardware comparison and selection guide for mainstream ESP32 development boards, covering core parameters, expansion capabilities, power consumption design, and applicable scenarios to help you accurately match project requirements: 1. Comparison of Core Parameters of Mainstream ESP32 Development Boards Development Board Model Core Chip Flash/PSRAM Wireless Features Key Interfaces Power Consumption Features … Read more

ESP32 Oscilloscope: A Web-Based Oscilloscope Project Using ESP32

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ESP32 Oscilloscope: A Web-Based Oscilloscope Project Using ESP32

Project Overview The ESP32 Oscilloscope is an oscilloscope project based on the ESP32 microcontroller, featuring an intuitive web interface that displays the captured signals. This project was initially designed to showcase the multitasking capabilities of the ESP32, but it has now evolved into a self-contained oscilloscope solution. This oscilloscope can display up to 736 samples … Read more

ESP32 Learning Notes (3)

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ESP32 Learning Notes (3)

Recently, while exploring the ESP32, I discovered many AI toys designed for smart voice applications. These devices interact with remote large models to generate intelligent speech, which looks particularly cool. In the past, I occasionally encountered projects that required interfacing with hardware, such as massage chairs, smart car washes, oxygen machine testing, CarPlay, boot cards, … Read more

ESP32 Oscilloscope: View Signals Collected by ESP32 Using a Web Browser

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ESP32 Oscilloscope: View Signals Collected by ESP32 Using a Web Browser

The ESP32 Oscilloscope is a tool that uses the ESP32 chip and a web user interface to observe signals. It displays the signals read by the ESP32 chip through a web browser, allowing you to intuitively understand the shape and changes of the signals. Features • Web User Interface: Access the ESP32 Oscilloscope via a … Read more

Getting Started with ESP32: Integrating XiaoZhi AI with MCP

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Getting Started with ESP32: Integrating XiaoZhi AI with MCP

Previously, I experimented with controlling an LED display, local server deployment, voice broadcasting, song playback, controlling WS2812 LED strips, custom wake words, and collecting temperature and humidity data; today I will share a simple exploration of MCP from yesterday.; 1. First, let’s take a look at the final implementation effect: 2. Reference Protocol:3. Now let’s … Read more

ESP32 Multicore Programming Techniques: Dual-Core Task Allocation

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ESP32 Multicore Programming Techniques: Dual-Core Task Allocation

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

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Comprehensive Guide to ESP32 SD Card File Operations

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 to ESP32

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Introduction to ESP32

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

Lessons Learned from Integrating ESP32 with a Self-Built Backend: OTA Address Configuration

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Lessons Learned from Integrating ESP32 with a Self-Built Backend: OTA Address Configuration

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

Build Your Own Drone for 150 Yuan! Open Source Drone Firmware Using ESP32 Chip and Smartphone Control

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Build Your Own Drone for 150 Yuan! Open Source Drone Firmware Using ESP32 Chip and Smartphone Control

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