国行 iPhone Air eSIM 解锁教程：通过 Safari 模拟定位添加海外 eSIM 卡
国行 iPhone Air 终于能用 eSIM 了！本教程详解如何通过 Safari 模拟定位到海外，绕过区域限制添加 Airalo、Holafly 等海外 eSIM 卡，支持 iPhone Air 及国行 iPad，附完整步骤、推荐运营商与常见问题解答。
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China iPhone Air eSIM Unlock: Add Overseas eSIM via Safari Location Spoofing
Unlock eSIM on China-model iPhone Air using Safari location spoofing. Complete tutorial covering Xcode setup, recommended carriers (Airalo, Holafly), supported devices, and FAQ. Works on iPhone Air and China iPad.
USB 3.0 PCB Routing Complete Guide: High-Speed Differential Pair Design
Master USB 3.0 PCB routing: 90Ω differential impedance control, length matching (within 5mil), reference plane integrity, via stub optimization, stackup design, ESD protection, and signal integrity simulation. Includes KiCad/Altium practical tips and routing rules comparison table.
KiCad MCP Server in Practice: AI-Assisted PCB Design, Schematics & Routing
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16-Year-Old Builds Starlink Receiver with Claude: AI-Assisted Hardware Development in Practice
A 16-year-old uses Claude AI to develop a Starlink satellite signal receiver for just $180. This article details the hardware list, AI-assisted development process, signal decoding principles, and legal compliance, with a DIY practical guide.
The Complete Pi Coding Agent 2026 Guide: From Beginner to Expert
What is Pi Coding Agent? How do you install and configure it? This article covers Pi Agent's core features, real-world examples, and advanced techniques, with a comparison table of Pi Agent vs Claude Code vs Cursor.
DJI 4G Module Explained: How It Works + DIY Alternatives (2026)
Deep dive into DJI 4G transmission module technology. Learn how DJI Cellular Dongle 2 works, compare it with O4 Air Unit, and build your own ESP32 + 4G LTE alternative. Complete comparison table and real-world test data included.
Build an ESP32 Occupancy Sensor for $5: The Complete HLK-LD2410 mmWave Radar DIY Guide
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.
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Deep dive into Espressif's ESP-NOW protocol, build a WiFi router-free wireless sensor network with two ESP32 boards in 2026, including Arduino/ESP-IDF code, encryption, 200m tested range and power consumption data.