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Haim Gelfenbeyn

Personal blog · haim.devhardwareprogramming

Haim Gelfenbeyn's personal blog at haim.dev covers hardware and programming. Since 2020, 7 different Hacker News readers have linked it 10 times, most often “How I built a keyboard/video/mouse switch for my two 4k monitors”. The last post was in 2023, but the archive is still widely read.

Visit the blog
10mentions?
7HN people?
2020–2023first – last linked?
Links on Hacker News per year · peak 5 in 2020

Too few sampled comments (6) to say how often HN recommends it.?

Why HN links it

Posts on a DIY dual-monitor KVM: a cheap $30 USB switch plus software that switches monitor inputs when peripherals connect. Commenters point readers to it as a free solution that works.

Summarised by Claude from a sample of 6 HN comments that link here. Each comment is marked recommending, critical or neutral (citing without judging); how this works.

Haim's rambilings about software engineering, home automation, electronics and technology in general.

Most-linked posts?

  1. How I built a keyboard/video/mouse switch for my two 4k monitors
    6 people · 9 mentions · first linked 2020-07-28

What Hacker News says?

  1. This rather clever cheap hardware and software KVM project is solving the issue in an interesting way, maybe a cross-polination opportunity? https://haim.dev/posts/2020-07-28-dual-monitor-kvm/

    Comment linking /posts/2020-07-28-dual-monitor-kvm/

    on “Lunar – macOS utility to set brightness and volume on external monitors”
  2. Submitted How I built a keyboard/video/mouse switch for my two 4k monitors as a story · 458 points

    HN discussion
  3. Previous discussion: https://news.ycombinator.com/item?id=24357308 Author's site: https://haim.dev/posts/2020-07-28-dual-monitor-kvm/ BTW, for some reason I could never get this working on my Hackintosh, keeps crashing the system and never took the time to look into it.

    Comment linking /posts/2020-07-28-dual-monitor-kvm/

    on “Display-switch: Turn a $30 USB switch into a full-featured multi-monitor KVM”
  4. Submitted Duplicating HTTP status in the response body is an anti-pattern as a story · 3 points

    HN discussion
  5. If you get bored of the polling, there is a tool that does this in an event driven way: https://github.com/haimgel/display-switch/ https://haim.dev/posts/2020-07-28-dual-monitor-kvm/ https://news.ycombinator.com/item?id=24357308

    Comment linking /posts/2020-07-28-dual-monitor-kvm/

    on “The journey to controlling external monitors on M1 Macs”
  6. Submitted DIY dual-monitor KVM from a simple USB switch as a story · 3 points

    HN discussion
  7. Davertron · 2020-12-23Recommends
    You might want to check this out then: https://haim.dev/posts/2020-07-28-dual-monitor-kvm/ That was on HN earlier this year. Basically it's software that you run and set up to detect when certain peripherals connect/disconnect and have it switch the input on the monitor automatically. I've been using it and, while not always perfect, it actually works pretty well, especially considering the price. If you don't alway…

    Comment linking /posts/2020-07-28-dual-monitor-kvm/

    on “The beautiful Silent ThunderBolt-3 PC”
  8. Submitted DIY dual-monitor KVM from a simple USB switch as a story · 2 points

    HN discussion
  9. dflock · 2023-12-09Recommends
    Don't do that, do this: https://haim.dev/posts/2020-07-28-dual-monitor-kvm/ - free and works great!

    Comment linking /posts/2020-07-28-dual-monitor-kvm/

    on “Ask HN: What sub $200 product improved your 2023”
  10. I think Dell has pretty good support for this, I had a pretty old Dell model before my current monitor and ddc worked fine with it. I now have an AORUS FO48U and it also supports it. I'm not sure it's always listed as a feature though when you're buying a monitor so it might be tricky. FYI, I originally learned about this stuff via https://haim.dev/posts/2020-07-28-dual-monitor-kvm/ .

    Comment linking /posts/2020-07-28-dual-monitor-kvm/

    on “Ask HN: Can you recommend an “instant-switch” Monitor? Does one exist?”

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