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RF Hunter押注大约100美元的DIY ESP32扫描仪能发现隐藏摄像头;登上Hacker News榜首

开源ESP32 + AD8317射频扫描器,用于扫查房间内的隐藏摄像头和窃听器;Show HN获得594分,仓库获得1.2k星标。

RFHunter (Matthew Rogers)

它在赌什么一款约100美元、用普通零件组装的开源探测器,能让普通人真正拥有扫查房间的能力,找出隐藏摄像头和窃听器,无需聘请专业扫查服务。已上线

做的是什么生意

RFHunter is a free, GPLv3 open-source hardware project: a handheld ESP32 + AD8317 RF detector with OLED readout, sensitivity dial and buzzer for finding hidden cameras, wiretaps and other transmitting devices in rooms and Airbnbs.

起因

Matthew Rogers, "a simple hacker from the United States," built the scanner from an ESP32, an AD8317 RF power detector, an OLED display and a handful of commodity parts. In the Show HN thread he said existing tools did not cover the use case — "I have an SDR as well and I just got a TinySA, neither really do this" — and the repo's About line names the target: "RFHunter is a device to find hidden Cameras at AirBNBs."

经过

Posted to Hacker News on 2024-10-24, RF Hunter drew 594 points and 175 comments; the author logged 2024-10-28 as the day it hit #1 on Hacker News that week and 2024-10-30 as the first "Tag from the Wild" from a user on X. V4 was presented as ready for prime time: zero-tool assembly, an internal battery and charge controller, and a boost converter replacing the 9V battery. In thread replies the author said builds detect cell phones, laptops and cameras, that a short 915 MHz antenna picks up signals around 50 feet away, and that the BOM runs about $100; commenters debated antenna directivity and suggested modifications such as dropping the boost converter, while the author hinted that more products were in the works.

结果

Still live as a single-maker open-source project at the 2026-09-04 crawl: the repo carried 1.2k stars and 46 forks, with GPLv3 firmware and build documentation; no company, product sales or revenue is disclosed in the material.

背景

RFHunter是一个开源射频信号扫描仪,用于查找隐藏摄像头、窃听器和其他发射设备:ESP32读取AD8317射频功率检测器,并在OLED屏幕上显示信号强度,配有灵敏度电位器和在强信号时发声的蜂鸣器。V4设计可免工具拼装,自带电池和充电控制器,并逐个零件记录,附有完整接线指南和一行刷机命令。

这个赌注是,一款用普通零件组装的约100美元的探测器,能让普通旅行者拥有过去需要商业扫查服务或昂贵专用设备才能实现的房间扫查能力。创作者Matthew Rogers在发现自己的SDR和TinySA无法胜任后,针对Airbnb时代对隐藏摄像头的恐惧打造了它,并公开了一切——GPLv3固件、无联盟佣金的亚马逊零件清单,以及构建指南——以便任何人都能制作。

2024-10-24的Show HN获得了594分和175条评论,作者的更新日志记录了2024-10-28在Hacker News上达到周榜第一,以及两天后首个用户“野外捕获”。到2026-09-04爬取时,仓库有1.2k星标;该项目仍是业余规模的开源构建,作者暗示更多产品,而非公司。

这件事要成立,得有什么

  • 可验证的数据和日期:2024-10-24 Show HN获得594分和175条评论,作者自己记录2024-10-28登上HN榜首,以及2026-09-04爬取时GitHub有1.2k星标。
  • 独特的产品赌注:普通零件和激进的文档取代了昂贵商业服务,进入一个由恐惧驱动的细分市场。
  • 实实在在的产品迭代:V4从9V电池改为单节可充电电池,加了升压转换器和免工具组装,回应了真实构建反馈。
  • 现实世界的信号:发布六天内,一位用户发布了首个“野外捕获”,证明设备被实际制造和使用。

可借鉴之处

一个可理解的修复方案的细分恐惧,青睐激进的透明度:公开每个零件、接线和代码行,按普通零件成本定价,并让社区改进构建。

后续进展

截至2026-09-05,RFHunter仍是活跃的单人开源项目:在2026-09-04爬取时,RamboRogers/rfhunter仓库有1.2k星标、46个复刻和10次提交,固件为GPLv3,有V4免工具硬件设计、完整物料清单和开放的问题区,供构建者反馈。更新日志仍指向2024年10月的Hacker News榜首,以及首个用户“野外捕获”,README称更多产品在开发中。材料中未披露公司、资金、销售渠道或收入。

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