44 篇文章
DIY a human presence sensor with a $5 ESP32 + HLK-LD2410 mmWave radar module — detects stationary humans and integrates with Home Assistant. Full wiring diagram, Arduino code, and ESPHome config in this 2026 hands-on tutorial.
用 5 美元 ESP32 + HLK-LD2410 毫米波雷达模块 DIY 人体存在传感器，检测静止人体，接入 Home Assistant。完整接线图、Arduino 代码与 ESPHome 配置，2026 实战教程。
Build a standalone Thread Border Router for $5 using ESP32-C6. Connect Matter/Thread devices to Home Assistant — no USB, no extra hardware. Step-by-step 2026 guide with IPv6 setup and troubleshooting.
用 5 美元的 ESP32-C6 搭建独立 Thread 边界路由器，连接 Matter/Thread 设备到 Home Assistant，无需 USB、无需额外硬件。2026 实战教程，含 IPv6 配置与排错指南。
Build a Thread Mesh network from scratch and harden IoT device firmware security - covering OpenThread border router configuration, node network communication, ESP32 Secure Boot v2 and Flash encryption full process
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
Build an IoT real-time monitoring dashboard from scratch — ESP32 sensor data stored in InfluxDB time-series database and visualized with Grafana. A complete hands-on tutorial.
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。
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.
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。
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.
从零搭建基于 Quectel BC26 的 NB-IoT 远程数据采集节点，涵盖硬件接线、AT 指令调试、功耗优化和云平台对接全流程。
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.
深入讲解 RCWL-0516 毫米波雷达传感器的工作原理、硬件接线、Arduino/ESP32 编程实战，以及人体存在检测项目的完整搭建指南。
Build a low-power agricultural monitoring network using ESP32 and SX1278 LoRa modules for long-range collection of soil moisture, temperature, light, and other data, with a coverage radius of up to 3–5 km.
使用 ESP32 和 SX1278 LoRa 模块搭建低功耗农业监控网络，实现土壤湿度、温度、光照等数据的远距离采集，覆盖半径可达 3-5 公里。
Build a smart home node powered by ESP32-C6 that supports both WiFi 6 and Matter protocols, enabling cross-brand device interoperability. A complete hands-on guide covering hardware selection, firmware compilation, and HomeKit integration.
用 ESP32-C6 打造支持 WiFi 6 和 Matter 协议的智能家居节点，实现跨品牌设备互联。从硬件选型、固件编译到 HomeKit 接入，完整实战指南。
Complete guide for ESP32 Matter smart light bulb development: from ESP-IDF SDK environment setup, Matter firmware compilation and flashing, to mobile network configuration and multi-platform integration testing. Supports mainstream platforms like Apple HomeKit, Google Home, Amazon Alexa, achieving cross-ecosystem smart home control. Includes code examples and solutions for common network configuration issues.
ESP32 Matter智能灯泡开发完整指南：从ESP-IDF SDK环境搭建、Matter固件编译烧录，到手机配网与多平台联动测试。支持Apple HomeKit、Google Home、Amazon Alexa等主流平台，实现跨生态智能家居控制。含代码示例与常见配网问题解决方案。
Build a complete MQTT IoT monitoring system from scratch: Mosquitto server deployment and configuration, ESP32 sensor data collection and reporting, Node-RED real-time dashboard visualization. Includes complete source code, wiring diagrams, and common troubleshooting solutions, covering QoS settings, auto-reconnection and other practical techniques, suitable for IoT beginners and developers.
从零搭建完整MQTT物联网监控系统：Mosquitto服务器部署与配置、ESP32传感器数据采集上报、Node-RED实时仪表盘可视化展示。附完整源码、接线图和常见故障排查方案，涵盖QoS设置、断线重连等实战技巧，适合物联网初学者和开发者参考。
详解蓝牙 Mesh 组网技术，从零搭建智能家居网络，支持多设备联动、低功耗运行，适合家庭自动化项目实战参考。
Detailed guide on Bluetooth Mesh networking technology, building smart home networks from scratch, supporting multi-device linkage and low-power operation, suitable for home automation project reference.
In-depth guide on Zigbee 3.0 protocol principles, building low-power mesh networks from scratch, achieving smart home device interoperability, including complete code examples and troubleshooting guide.
深入讲解 Zigbee 3.0 协议原理，从零搭建低功耗 mesh 网络，实现智能家居设备互联互通，包含完整代码示例和故障排查指南。
Step-by-step guide to building a Modbus RTU to MQTT industrial data collection gateway using ESP32, enabling seamless integration of traditional RS485 devices (PLCs, temperature/humidity sensors, meters, etc.) into IoT platforms. Includes complete hardware wiring diagrams, ESP32 code examples, and MQTT Broker configuration steps for quick implementation of industrial field data cloud connectivity and remote monitoring.
手把手教你用ESP32搭建Modbus RTU转MQTT工业数据采集网关，让传统RS485设备（PLC、温湿度传感器、电表等）无缝接入物联网平台。包含完整硬件接线图、ESP32代码示例与MQTT Broker配置步骤，快速实现工业现场数据上云与远程监控。
Complete practical guide for 4G Cat.1 module EC200U: from hardware wiring, AT command debugging, Arduino driver development to MQTT data reporting, with real-world data usage testing and low-power solutions, cost only 70 yuan.
4G Cat.1 模块 EC200U 完整实战指南：从硬件接线、AT 命令调试、Arduino 驱动开发到 MQTT 数据上报，附流量消耗实测与低功耗方案，成本仅需 70 元。
Why do you need positioning function? Friends doing IoT projects must have encountered this requirement: where is the device? How to make it report its location? Shared bikes, logistics tracking, pet positioning, outdoor adventure recorders... these scenarios all require GNSS positioning. Today we'll use the domestic ATGM336H module (Beidou + GPS dual mode) to build a simple GPS tracker, cost under 50 yuan, and can store location data to SD card or send to server via 4G. ⚠️ Note: GNSS...
为什么需要定位功能？ 做物联网项目的同学肯定遇到过这种需求：设备在哪？怎么让它上报位置？共享单车、物流追踪、宠物定位、户外探险记录仪……这些场景都离不开 GNSS 定位。 今天咱们用国产的 ATGM336H 模块（北斗 + GPS 双模）做一个简易 GPS 追踪器，成本不到 50 元，还能把位置数据存到 SD 卡或者通过 4G 发送到服务器。 ⚠️ 注意：GNSS...
Build your own Zigbee 3.0 smart home gateway with ESP32+CC2652P, total cost under 100 yuan, more flexible than Aqara gateway. Supports Zigbee2MQTT and Home Assistant deep integration, local control works offline, 50+ devices online simultaneously. Includes complete hardware list, CC2652 firmware flashing, ESP32 code tutorial, and pairing troubleshooting guide.
用ESP32+CC2652P自制Zigbee 3.0智能家居网关，总成本不到100元，比Aqara网关更灵活。支持Zigbee2MQTT与Home Assistant深度集成、本地化控制断网可用、50+设备同时在线。附完整硬件清单、CC2652固件烧录、ESP32代码教程和配对排错指南。
Self-host MQTT broker with Eclipse Mosquitto on Linux server, complete data control without relying on public platforms. Covers Mosquitto installation and deployment, user authentication and ACL permission configuration, TLS/SSL encrypted communication, and connection tuning performance optimization tips. Suitable for IoT developers to build secure and reliable localized message hub.
用Eclipse Mosquitto在Linux服务器上自建MQTT代理，数据完全掌控不依赖公共平台。涵盖Mosquitto安装部署、用户认证与ACL权限配置、TLS/SSL加密通信，以及连接数调优等性能优化技巧。适合物联网开发者搭建安全可靠的本地化消息中枢。
1. Introduction Closed-circuit television (CCTV) systems are widely used in security monitoring, and remote camera control is crucial for the system. PELCO-D and PELCO-P are two mainstream video transmission protocols used to transmit control commands and video signals between cameras and control devices...
1. 简介 闭路电视(CCTV)系统广泛应用于安防监控领域,摄像头的遥控对于系统至关重要。PELCO-D和PELCO-P是两种主流的视频传输协议,用于在摄像机和控制设备之间传输控制命令与视频信号。...
Today I'll discuss the 10 most widely used wireless communication protocols in the IoT field. The rapid development of IoT has made our lives more convenient, but the emergence of various wireless communication protocols also brings considerable trouble to product selection. Below, I'll introduce in detail the 10 most important wireless communication technologies in the current IoT field, ranked by usage frequency from high to low. 1. Bluetooth/BLE Bluetooth is a short-distance, low-power wireless connection technology, mainly used to connect fixed devices and mobile devices. Its main advantages include: -...
今天我就和大家聊聊物联网领域目前使用最广泛的10大无线通信协议。 物联网的蓬勃发展让我们生活变得更便捷,但各种无线通信协议的出现也给产品选型带来不小困扰。下面我就按使用频率从高到低为大家详细介绍一下当前物联网领域最主要的10种无线通信技术。 1. 蓝牙/BLE 蓝牙是一种短距离、低功耗的无线连接技术,主要用于连接固定设备和移动设备。它的主要优势包括: -...
Modbus is a serial communication protocol built on a master-slave network architecture. It was developed in the 1970s by Modicon to interconnect its programmable logic controllers (PLCs). The protocol has since seen widespread adoption and is now one of the de facto industrial communication standards.
Modbus是一种串行通信协议,它采用了主从架构的网络结构。在70年代,Modicon公司为了连接自己生产的可编程逻辑控制器(PLC),开发出了这一通信协议,即Modbus协议。随后该协议得到广泛应用,现已成为工业标准通信协议之一。...
A comprehensive guide to common RF antenna connectors including SMA, BNC, MCX, and N-type: naming conventions, impedance differences (50Ω vs 75Ω), and selection tips, plus adapter and extension cable purchasing reference.
一文搞懂 SMA、BNC、MCX、N 型等常见 RF 射频天线接头的命名规则、阻抗区别（50Ω vs 75Ω）和选型要点，附转接头延长线选购速查。