OpenCV Python 图像滤波完全指南：高斯、中值、双边、Gabor、傅里叶变换
全面学习 OpenCV Python 图像滤波技术：GaussianBlur、medianBlur、bilateralFilter、Gabor 滤波器、自定义滤波器、傅里叶变换(DFT)、Sobel 边缘检测、阈值处理。包含完整代码示例与对比分析。
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Complete Guide to OpenCV Python Image Processing: Color, Channels, Histograms, Morphology, Masks
Master core OpenCV Python image processing operations: color space conversion (cv.cvtColor), channel operations, image masking, histograms, morphological operations (morphologyEx), flipping, scaling, gamma correction, mean & standard deviation. Full code examples and practical tips.
OpenCV Python 图像处理完全指南：色彩、通道、直方图、形态学、遮罩
全面学习 OpenCV Python 图像处理核心操作：色彩空间变换(cv.cvtColor)、通道操作、图像遮罩、直方图、形态学操作(morphologyEx)、翻转、缩放、伽玛校正、均值与标准差。完整代码示例与实战技巧。
PCB 设计完全指南：从 KiCad 入门到四层板信号完整性实战
一篇讲透 PCB 设计全流程：用 KiCad 从零绘制原理图、分配封装、布局布线、导出 Gerber，再到四层板层叠设计、阻抗控制、串扰抑制与电源完整性实战，附常见问题排查与打样清单。
传感器 DIY 实战：BH1750 自动调光 + HX711 高精度电子秤制作
两篇传感器实战合二为一：BH1750 数字光照传感器实现智能自动调光系统，HX711 24 位 ADC 搭配称重传感器制作 0.1g 精度电子秤。含完整接线图、Arduino 代码、校准流程与常见问题排查，总成本不到 100 元。
Thread 协议与物联网安全：Mesh 网络搭建 + 固件加固实战
从零搭建 Thread Mesh 网络并加固 IoT 设备固件安全——涵盖 OpenThread 边界路由器配置、节点入网通信、ESP32 Secure Boot v2 与 Flash 加密全流程
物联网数据可视化：Grafana + InfluxDB 搭建实时监控大屏
从零搭建 IoT 实时监控大屏，ESP32 传感器数据经 InfluxDB 时序数据库存储，Grafana 可视化展示，完整实战教程。
UWB 精准定位实战：DW3000 室内厘米级追踪系统
从零开始用 ESP32 + DW3000 模块搭建室内厘米级定位追踪系统，涵盖 DS-TWR 双向测距原理、三边定位算法、卡尔曼滤波平滑和精度优化技巧。
ESP32 多核编程：双核任务分配与共享内存同步
ESP32 搭载双核 Xtensa 处理器，本文详解如何用 FreeRTOS 把任务分配到不同核心运行，并通过互斥锁、信号量、消息队列实现跨核共享内存安全同步，附带完整代码示例。
TinyML 异常检测：工业设备预测性维护边缘方案
用 Arduino Nano 33 BLE Sense + Edge Impulse 在 MCU 上跑异常检测模型，提前发现电机、泵、风机故障，实现低延迟预测性维护。
UWB Precision Positioning in Practice: DW3000 Indoor Centimeter-Level Tracking System
Build an indoor centimeter-level positioning and tracking system from scratch using ESP32 + DW3000 modules, covering DS-TWR two-way ranging principles, trilateration algorithms, Kalman filter smoothing, and accuracy optimization tips.
ESP32 Multi-Core Programming: Dual-Core Task Assignment and Shared Memory Synchronization
The ESP32 features a dual-core Xtensa processor. This guide walks through how to assign tasks to different cores using FreeRTOS, and safely synchronize shared memory across cores with mutexes, semaphores, and message queues — complete with full code examples.
TinyML Anomaly Detection: Edge-Based Predictive Maintenance for Industrial Equipment
Run an anomaly detection model on an MCU using Arduino Nano 33 BLE Sense + Edge Impulse to detect motor, pump, and fan faults early, achieving low-latency predictive maintenance.
UART Serial Communication Complete Guide 2026: Baud Rate, Flow Control and Multi-Device Communication
A complete guide to UART serial communication from principles to practice, covering baud rate calculation, hardware flow control, RS485 half-duplex, Modbus RTU protocol implementation, and ESP32 multi-UART port usage tips.
Arduino OLED Display Complete Tutorial: SSD1306 I2C Wiring, Drawing and Real-time Sensor Data Display (2026)
Learn to drive SSD1306 OLED display with Arduino from scratch: I2C wiring methods, Adafruit_SSD1306 library usage, text/graphics drawing, real-time temperature and humidity sensor data display, with complete code and wiring diagrams.
ESP32 Temperature & Humidity Monitoring System: DHT22 + MQTT + Node-RED Dashboard Complete Project Tutorial
Build an ESP32 temperature and humidity monitoring system from scratch: DHT22 sensor wiring, Arduino IDE code, MQTT communication protocol configuration, Node-RED dashboard visualization - a complete IoT practical project.
NB-IoT Module BC26 in Practice: Low-Power Remote Data Collection System
Build a NB-IoT remote data collection node based on Quectel BC26 from scratch, covering the complete process of hardware wiring, AT command debugging, power consumption optimization, and cloud platform integration.
Millimeter Wave Radar Sensor RCWL-0516: Human Presence Detection in Practice
In-depth guide to the RCWL-0516 millimeter wave radar sensor: working principles, hardware wiring, Arduino/ESP32 programming, and a complete setup guide for human presence detection projects.
The Complete I2C Bus Guide 2026: From Protocol Fundamentals to Multi-Device Hands-On
Deep dive into the I2C bus protocol: from SCL/SDA signal fundamentals, address addressing, and pull-up resistor calculations, to hands-on multi-device code with Arduino and ESP32. A must-read I2C guide for embedded developers.