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
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
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
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
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
Recently, I used FreeRTOS in a project and became curious about idle tasks and hook functions, so I wanted to understand what these two are used for. Here, I will share some of my insights.1. Idle TaskThe idle task is a task that is created by default after the FreeRTOS system starts, and it has … Read more
Follow+Star Public Account Number to not miss exciting content Author | Source: gitee Friends who have worked on projects should know that in projects, using methods like disabling global interrupts to protect critical sections can lead to harmful consequences (loss of responsiveness, processing delays). For example, high-speed communication can result in frame loss, and high-speed … Read more
Total text: 888 words, 16 images,Estimated reading time: 1 minute Previously, when we deployed OpenVPN on a cloud host (Using OpenVPN to Access Cloud Resource Pool Services), the cloud host had a single network interface. Now we have a single network interface OpenWrt (Configuring OpenWrt in One-Arm Routing Mode), which is based on the Linux … Read more