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The author used an ESP32-S3 and a PN532 to read and decode the NFC microchip inside a Philips Sonicare toothbrush head, verified the pressure multiplier mechanism, rewrote the brush head data using community GitHub tools, and even used an old brush head to unlock a computer.
A guide to building a 433 MHz terminal-based RF scanner by wiring a CC1101 radio module to an FTDI FT232H USB board, driven directly from Python via pyftdi with no microcontroller or firmware flashing required.
A father and his 12-year-old son detail their two-month hobby project building a mini computer inside an Altoids tin, from salvaging a robot display to CAD-fitting an Arduino Nano, batteries, and OLED screen — and note how AI hallucinated a wrong pinout for the display.
The Verge's Sean Hollister built a $50 DIY AI Tamagotchi using a Waveshare ESP32-S3 devkit and Meta's open-source Muse Gadget SDK, supercharging it with Claude Code to add features Meta's official Muse Charm lacks.
一位电子爱好者将从 Facebook Marketplace 购得的 $120 SK hynix DDR5-5600 笔记本内存颗粒移植到 AliExpress 的桌面 PCB 上，打造出价值约 $1000 的 DDR5-7800 桌面内存套装，以应对当前的内存涨价潮。
Adafruit shared a blog post about hacking a marine radio dish, a DIY hardware project repurposing marine radio equipment for radio experimentation.
Jeff Geerling documents swapping the noisy stock Delta fan in a Calnex Rb/GPS frequency reference for a quieter Noctua NF-A4x20 FLX, detailing the internals including a SpectraTime GRClok-1500 GPS-disciplined oscillator.
A developer shares Marelleo, an open-source story box for kids built with an ESP32 dev board and RFID reader, inspired by the Toniebox but free from closed content catalogs and subscription-style business models.
一位用户宣布其朋友发布了免费的机器人工程教育平台，包含13种真实开发板的交互式学习内容，涵盖Arduino、树莓派等，旨在替代昂贵的入门套件。
Hardware enthusiast Throaty Mumbo demos GCVHS, an experimental gaming system that encodes executable game data and video streams onto real VHS tapes, getting classics like Doom and Super Mario Bros running via a DE1-SoC FPGA board and RP2350 microcontroller, revisiting the 1987 Action Max concept with genuinely interactive results.
Paula 完成了基于 6502 CPU 的自制笔记本 LT6502b，采用半厚度透明橙色外壳、10.1 英寸 1024×600 IPS 屏幕、10MHz 主频，并内置 SID 模拟器和 WiFi 调制解调器，PCB 文件与代码已在 Codeberg 开源。
A maker converted a Razor A5 Lux push scooter into a front-wheel-drive electric scooter powered by a Hercules 20V cordless drill, using a keyed shaft, one-way bearings, and a relocated trigger for throttle control, reaching about 10 mph with roughly 2 miles of range.
作者介绍为北加州 APRS 数字中继/互联网网关项目批量改造 AEA PK-88 TNC 硬件的经验，包括跳线设置等实用改进。
PSPi 6 是一个开源硬件项目，提供自定义电路板替换 PSP 1000 主板，让玩家用 Raspberry Pi Zero、Zero 2W 或 CM4 驱动经典 PSP 外壳，支持复古游戏模拟器和完整 Linux 发行版，现已量产发售。
Show HN: 一个快速DIY项目分享，作者用柔性LED灯丝（俗称noodle）和支撑面料手工缝制出一件可穿戴的“霓虹”发光T恤，详细介绍了材料清单与制作过程。
作者请插画师绘制了自己的房子插画，并将其用作 Home Assistant 智能家居控制面板的可视化界面，展示了个性化智能家居 UI 的创意玩法。
A hobbyist hand-soldered an FPGA-based inference rig for just over $200 using used mining-rig parts, writing low-level VHDL to hard-code Qwen directly into the chip — a striking DIY alternative to expensive NVIDIA GPUs.
A developer vibe-coded an app, skill, and cron job with Sonnet 5.5 to replicate Plaud's paid transcription subscription using only local models, saving money and storing searchable transcripts locally.
The ESP32 community now has its own awesome list, curated by curisama, collecting projects worth doing, copying, and watching—from desktop pets and AI coding agent watchers to e-paper displays, games, and practical firmware like Tasmota and WLED.
A hobbyist built BinRange, an open-source UWB-based system with custom firmware and Home Assistant integration to track whether household trash bins have actually been moved out for collection.