DIY

为了解决车库门忘关的问题，我用拇指大小的ESP32-CAM单片机与AI协作做了一个端侧神经网络传感器。本文记录了如何通过打通全自动串口研发闭环、解决数据极度不对称与QAT量化衰减，在10小时内跑通嵌入式AI的完整过程。

To solve the problem of accidentally leaving my garage door open overnight, I collaborated with AI to build an edge neural network sensor on a thumb-sized ESP32-CAM. This article details how we completed the end-to-end telemetry loop, tackled extreme data imbalance and QAT quantization loss, and got edge AI running on a microcontroller in just 10 hours.

家庭应急供电系统搭建指南：从逆变发电机到Ecoflow储能再到家庭电路改造，结合西雅图炸弹风暴断电经历分享燃料储备、网络备份等实战经验。

A practical guide to building a home emergency power system - from portable generators to Ecoflow Delta Pro with home circuit integration, solar panels, and lessons from Seattle's bomb cyclone outage.

用大疆御3搭载ZWO天文相机实现1寸传感器320mm长焦：画质碾压原生长焦头，支持RAW和M档，探索无人机摄影的画质极限，整机重量控制在500g。

用ZWO天文相机+树莓派4自制方形画幅黑白相机"鸭苏"：高感表现惊艳，支持红外紫外摄影，成本远低于徕卡M10 Monochrom，探索中画幅黑白摄影的平民方案。

DIY solution for adding ZWO EAF autofocus to SharpStar FMA180 telescope using 3D-printed parts and GT2 belt, with assembly instructions and sample astrophotography results.

基于ESP32-Cam自制开源智能监控摄像头，介绍硬件组装、固件配置、深度学习物体检测报警，以及与Alexa智能家居的联动方案。

小微卫星TubeSat和CubeSat的发射成本仅需1-2万美元，可加装自定义传感器和相机，在近地轨道运行数周后坠入大气层烧毁。

用Leica 50AA反接实现200nm/像素的极限微距：拍摄CMOS传感器像素结构，7倍光学放大+摇摇乐达到近20倍有效放大倍率。