![[Open Source] IP Query Web — IP Geolocation Lookup, My IP, Domain Resolution](/upload/ChatGPT%20Image%202026%E5%B9%B45%E6%9C%8827%E6%97%A5%2002_03_24.png)
[Open Source] IP Query Web — IP Geolocation Lookup, My IP, Domain Resolution
An open-source IP geolocation query system built on the CZ88/Pure IP database is presented. It supports IPv4/IPv6 lookup, domain resolution, client IP detection, batch queries, and RESTful APIs with JSON or plain-text output. Deployment options include bare-metal Node.js, Docker, and Baota panel. Features include weekly automatic database updates, CLI tool, bilingual UI, site statistics, multi-layer security (CC protection, rate limiting, security headers), and CDN/Nginx real-IP support. Users can self-host a private lookup service, integrate the API into applications, or study Node.js/Express architecture.
Hermes Agent Deployment Guide: Build Your First AI Assistant Step by Step
Hermes Agent is an open-source, self-hosted AI agent system with long-term memory and skill accumulation. This guide demonstrates a 10-minute deployment on a Linux cloud server, covering environment setup, LLM API configuration, TUI conversation, and QQ bot integration. It supports multiple models (Kimi, GLM, Claude, Gemini, etc.) and 40+ tools including MCP, terminal, and cron. The example shows the agent designing and deploying a Minecraft website via a QQ bot, and users can customize it to add features. Readers gain a practical path to building a continuously improving personal AI assistant.
Operational Amplifier (Op-Amp) Beginner's Guide: From Theory to Practice
This beginner guide explains operational amplifiers from fundamentals to practical use. It covers op-amp types, open-loop operation as a comparator, and negative feedback for linear amplification. Key circuits—voltage follower, non-inverting, and inverting amplifiers—are analyzed using virtual short and virtual open concepts, with gain formulas and common pitfalls. It provides selection guidance, essential DC/AC/bandwidth parameters, and hands-on breadboard lab experiments using LM358. Readers gain the ability to analyze entry-level op-amp circuits, avoid typical mistakes, and build and test basic amplifier circuits with confidence.
Quick Unboxing & Review of 5G CPE NRadio C2000MAX
The NRadio C2000MAX is a compact 5G-A CPE with WiFi 7 BE3600, a 2.5G port, and dual nano-SIM slots plus built-in eSIM. Speed tests reached 346Mbps on China Telecom and 358Mbps on China Mobile, comparable to flagship phones. Idle power draw is 4.6W, rising to 9.5W under load. A 1TB monthly data plan costs 599 RMB annually. It supports OpenWrt and offers advanced SIM, band, and cell locking controls.
ZTE F40 5G Portable Wi-Fi: A Quick Unboxing and Review
The ZTE F40 is a compact 5G RedCap portable Wi-Fi with a USB-drive design, Wi-Fi 6, and up to 16 device connections. It offers dual built-in eSIMs plus a physical SIM slot. Real-world tests showed Telecom 5G download speeds of 41Mbps and uploads of 79Mbps, while Mobile 5G reached 22.7Mbps downlink. Power consumption was notably low at 0.9W idle and 2.4W under load. The web interface includes band locking and SIM switching. With a 1.5TB monthly data plan at roughly 58 RMB per month, it provides cost-effective, low-power 5G connectivity.
CommentAI - Typecho Blog AI Intelligent Comment Moderation & Reply Plugin
CommentAI is a Typecho plugin that automatically moderates and replies to comments using AI. It flags rejected comments for manual review, generates contextual replies, and supports multiple AI platforms including Qwen, OpenAI, DeepSeek, and Kimi. Features include three working modes, sensitive-word filtering, frequency limiting, reply delay, and trigger settings. Compatible with Typecho 1.2–1.3 and PHP 7+, it helps bloggers reduce spam and engage readers efficiently.
![[Open Source] PD65W GaN Charger (ACF), Based on DK8607AD, IP6538-AC-65W, XPM52CDP65](https://img.zeruns.top/blog-en/2026/03/02/WPS%E6%8B%BC%E5%9B%BE0(1)-1772466019.webp)
[Open Source] PD65W GaN Charger (ACF), Based on DK8607AD, IP6538-AC-65W, XPM52CDP65
An open-source 65W PD GaN charger design is presented, combining a DK8607AD-based Active Clamp Flyback (24V/3A) supply with IP6538 or XPM52CDP65 fast-charging DCDC boards. The GaN flyback boards failed during testing, while DCDC boards delivered up to 67.7W with ~95–96% efficiency. Schematics, PCB files, transformer specs, and fabrication materials are provided.
![[Open Source] SC8703-Based Adjustable Buck-Boost DC/DC Power Supply | Voltage & Current Adjustable, PD Fast Charge Input Supported](https://img.zeruns.top/blog-en/2026/02/23/IMG_20260216_180814-1771781704.webp)
[Open Source] SC8703-Based Adjustable Buck-Boost DC/DC Power Supply | Voltage & Current Adjustable, PD Fast Charge Input Supported
An open-source buck-boost DC/DC module based on SC8703 accepts 2.7–36V input and outputs 1.21–36V with up to 10A, adjustable current limit, 600kHz switching, and 95.45% peak efficiency. It includes XT30 and Type-C PD input via CH224Q. Provided files: KiCad project, Gerbers, BOM, stencils, interactive BOM, and 3D models. Proper heatsinking is required; bare-board operation is recommended below 5A.
OWON HDS160 Oscilloscope Multimeter: Unboxing, Review, and Teardown
The article presents a hands-on unboxing, review, and teardown of the OWON HDS160, a 4½-digit handheld oscilloscope multimeter purchased for 365 RMB. Its main appeal is the built-in 1 MHz oscilloscope that works with standard multimeter test leads, enabling direct voltage or current waveform measurement and automatic detection of the input jack to switch ranges. Key specifications include 60000-count display, DC voltage accuracy of ±(0.05%+5 digits), CAT III 1000 V safety rating, 2.8-inch IPS screen, and a single 18650 battery. Field tests cover USB voltage, AC mains waveform (50 Hz, 328 V peak, 232 V RMS), STM32 board inrush current, and low-power current measurements. The teardown reveals an HC32F460PETB MCU, HY3131 multimeter front-end, MAX6006AESA voltage reference, SGM41511 charger, GD25Q128ESIG flash memory, and infrared components for jack detection. The author notes a slightly crooked Type-C port and a clock that resets when the battery is removed. Readers gain insight into the device’s capabilities, component choices, internal construction, and practical limitations, useful for evaluating its suitability for low-frequency electrical and embedded debugging tasks.
Hiking Yangtai Mountain in Shenzhen
A Shenzhen hiking trip to Yangtai Mountain is documented with photos. The article covers the mountain’s location, its status as western Shenzhen’s highest peak (main peak 587.1m), scenic landmarks, and revolutionary history as an East River Column base. Images were shot with a Huawei Mate 70 Pro+ and DJI Action 6, compressed to WebP, alongside links to other travel photo essays.
Hiking Notes of Wutong Mountain in Shenzhen & Shenzhen Sunset Photos
The author recounts a December 6, 2025 hike up Shenzhen’s Wutong Mountain with friends. The route ascended via Xiutong Road from the metro station, summited Da Wutong (943.7 meters), and descended via Haohan Slope and Lingyun Road. Lingyun Road is steep and narrow, so ascending there is discouraged. The post shares compressed WebP photos of the scenic national park.
Discourse Forum Setup Tutorial: Zero-Base Deployment of Discourse Open Source Community Forum
本文介绍了如何基于Linux系统，借助宝塔面板和Docker技术，快速搭建国际流行的开源论坛软件Discourse。文章详细说明了Discourse的核心优势，包括实时交互、移动友好、信任等级系统、强大的搜索功能和丰富的插件生态，并指出其适用于企业社区、兴趣社群和内部协作等多种场景。教程核心部分涵盖从云服务器准备、宝塔面板安装与配置、Docker环境部署，到Discourse源码拉取、配置文件编辑（涉及端口映射、域名、管理员邮箱及SMTP设置），再到通过反向代理配置网站并申请SSL证书，最终完成论坛部署与管理员账号激活的全过程，为零基础用户提供了一条清晰的建站路径。 **摘要要点：** - **目的**：为零基础用户提供一站式Discourse论坛搭建方案。 - **核心组件**：Linux服务器、宝塔面板（简化服务器管理）、Docker容器、Discourse源码。 - **关键步骤**：配置Discourse（端口、域名、邮箱等）、通过宝塔设置反向代理与SSL证书。 - **成果**：成功部署一个具备基本功能且支持HTTPS的安全论坛网站。
Discourse AI Configuration Tutorial: Using SiliconFlow API to Enable AI Features for Free
这篇教程详细介绍了如何为Discourse论坛启用和配置AI功能，主要包括AI搜索、AI翻译及AI相关话题推荐等。文章基于官方指南和实际部署经验，使用SiliconFlow作为AI服务提供商。配置过程分为三大步骤：首先启用Discourse AI插件；其次分别设置LLM（大语言模型）和Embedding（嵌入模型），包括填入API密钥、服务端点和模型参数；最后开启各项AI功能，如AI助手、内容摘要、自动翻译和语义搜索等。这些功能可提升社区管理效率、增强用户体验并保障数据安全。教程还附带了演示站点和相关资源链接供参考。
Hiking Trip to Bijia Mountain in Shenzhen: Shenzhen Sunset & Night View Photos
The post shares photos from a hike at Bijia Mountain Park on October 25, 2025. The park is only about 100 meters high and has two main peaks, Biguan and Bijun, each equipped with observation decks offering views of the sunset and urban nightscape. The images were taken with a Huawei Mate 70 Pro+ and compressed to WebP format. The article also links to the author's other travel photo essays and tech-related posts for further reading.
BenQ RD280U Review: 28" 4K 3:2 Professional Programming Monitor
The BenQ RD280U is a 28.2-inch 4K programming monitor with a 3:2 aspect ratio, showing about 20% more lines than typical 16:9 displays. It offers dedicated coding modes, KVM switching, 90W USB-C power delivery, and MST daisy-chaining. Hardware low blue light and MoonHalo ambient lighting aim to reduce eye strain. Measured sRGB coverage was 96.2% with average Delta E 2.23, though blue accuracy is limited. The monitor is well-suited for programmers wanting multitasking efficiency, multi-device control, and long-session comfort.