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2026年5月21日 嵌入式开发

RISC-V 架构入门：从原理到第一块开发板

写在前面 过去二十年，处理器架构市场基本被两家瓜分：Intel 的 x86 统治 PC 和服务，ARM 统治移动端和 IoT。你想自己做一颗芯片？抱歉，先交一笔不便宜的授权费。 RISC-V 的出现打破了这个局面。 RISC-V 是一个完全开源的指令集架构（ISA）。任何人可以免费使用它设计、制造、销售芯片或基于 RISC-V 的产品，而无需向任何公司支付许可费。它由加州大学伯克利分校的...

2026年5月19日 物联网

2026 MQTT物联网实战：ESP32数据采集+Node-RED可视化

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。

2026年5月25日 Embedded Development

LoRa SX1278 Long-Range Networking Practice: ESP32 Wireless Communication Module Tutorial 2026

In IoT projects, WiFi and Bluetooth are sufficient - until you need to cover hundreds of meters or even several kilometers. Farm temperature/humidity monitoring, campus security, reservoir water level monitoring... in these scenarios, WiFi signal? Doesn't exist. This is when LoRa (Long Range) comes in handy. And SX1278 is currently one of the most cost-effective LoRa chips. You can buy a module for 15 yuan on Taobao, add an ESP32 main controller, and build a wireless sensor network covering several kilometers...

2026年5月21日 嵌入式开发

RISC-V Architecture Getting Started: From Principles to Your First Dev Board

Over the past two decades, the processor architecture market has been dominated by two players: Intel's x86 rules PCs and servers, while ARM dominates mobile and IoT. Want to design your own chip? Sorry — pay a hefty licensing fee first. RISC-V changed the game. RISC-V is a completely open-source instruction set architecture (ISA). Anyone can freely use it to design, manufacture, and sell chips or RISC-V-based products without paying licensing fees to any company. Initiated by Professor Krste Asanović and his team at UC Berkeley in 2010, it has become the hottest new force in the chip industry.