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callcc

@ callcc @lemmy.world

Posts
10
Comments
72
Joined
3 yr. ago

  • Jeff Bezos said the quiet part out loud — hopes that you'll give up your PC to rent one from the cloud

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  • They bought so many GPUs and RAM that will be worthless after the big bubble pop that they now need an alternative plan for that hardware. Brace yourselves to be sold virtual computers.

  • How are people discovering random subdomains on my server?

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  • TIL

  • Is there no good inexpensive CAD software?

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  • Maybe use a release and not a weekly build?

  • DIY experimental Redox Flow Battery kit

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  • I'm not the designer of this. I've also wondered. Maybe it's just a practical choice to have something tough to attach your wires to.

  • DIY experimental Redox Flow Battery kit

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  • Not sure what MH is but in bigger systems magnetically coupled centrifugal pumps are used afaik.

  • DIY experimental Redox Flow Battery kit

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  • The roadmap defines 3 milestone batteries. The first is released, it's a benchtop device that you can relatively easily build on your own. It has an electrode side of 2 x 2cm2. It does not store any significant amount of energy. The second one is being developed right now, it has a cell the size of a small 3d printer bed (20x20cm) and will also not store practical amounts of energy. It will hopefully prove though that they are on the right track and that they can scale it up. The third battery only will store significant amounts of energy but in only due end of the year (probably later).

    Current Vanadium systems cost approx. 300-600$/kWh according to some random website I found. The goal of this project is to spread the knowledge about Redox Flow Batteries and in the medium term only make them commercially viable.

    The aniolyth and catholyth are based on the Zink-Iodine system in an aqueous solution. There are a bunch of other systems though, each with their trade offs. The anode and cathode are both graphite felt in the case of the dev kit.

  • DIY experimental Redox Flow Battery kit

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  • You need Polypropylen filament for printing, graphite felt as electrode, grafoil gasket material as bipolar plate, brass plate as current collector (cut by cnc), silicone gasket material and a measurment device like a potentiostat.

    If you're really interested, living somewhere in the EU, I could send you some stuff. I also have the chemicals in big quantities.

  • Solarpunk technology @slrpnk.net
    callcc @lemmy.world

    DIY experimental Redox Flow Battery kit

    fbrc.dev
  • Technology @lemmy.world
    callcc @lemmy.world

    DIY experimental Redox Flow Battery kit

    fbrc.dev
  • Opensource @programming.dev
    callcc @lemmy.world

    DIY experimental Redox Flow Battery kit

    fbrc.dev
  • 3DPrinting @lemmy.world
    callcc @lemmy.world

    DIY experimental Redox Flow Battery kit

    fbrc.dev

  • VERY simple web-based reliable file browser/hosting

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  • Don't recommend using FTP. It's a shitty old protocol that needs to die. Just use nginx or apache with directory listing enabled.

  • NSFW Deleted

    Permanently Deleted

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  • No.

  • Friendly reminder that Tailscale is VC-funded and driving towards IPO

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  • Just came here to say that the guy looks like a creep!

  • Self hosted Teams alternative?

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  • No, I rarely read the code of software I use, especially crypto code since thant's not my thing. But good to know that you did. Thanks for your opinion.

  • Self hosted Teams alternative?

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  • Please tell us more about the actual security problems!

  • \begin

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  • A gap in the pdf or actually a gap because you took years to figure it out? Both interpretations are funny.

  • What's your favorite IDE right now?

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  • Emacs with LSP and magit rules!

  • How to harden against SSH brute-forcing?

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  • Agreed!

  • How to harden against SSH brute-forcing?

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  • I don't agree about the point concerning cost. You have additional training, update, maintenance and config burden. This on top of the burdon of using the VPN on top of ssh.

  • How to harden against SSH brute-forcing?

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  • Ok, fair point. But why stop at one vpn? I choose to trust OpenSSH, but I agree that adding a secondary layer of security actually helps here. You basically multiply two very low probabilities to get an even lower one. The trade-off is that you add complexity. You now need to keep two services up to date, and correctly configured and access/key material distributed.

    I'd only recommend this setup for projects with special security requirements.

  • How to harden against SSH brute-forcing?

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  • And why exactly is that more secure?

  • How to harden against SSH brute-forcing?

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  • Welcome to the internet! Your system will get probed. Make sure you run as little as possible services on open ports and only high quality ones such as OpenSSH. Don't freak out because of your logs. You're fine as long as your system is up to date and password login disabled! Don't listen to the fail2ban or VPN crowd. Those are only snake oil.

    A VPN is probably just as (in)secure as OpenSSH. There is no gain in complicating things. OpenSSH is probably one of the most well tested code for security around.

  • 3DPrinting @lemmy.world
    callcc @lemmy.world

    Dart case

  • 3DPrinting @lemmy.world
    callcc @lemmy.world

    Case for dew-point ventilator

  • Selfhosted @lemmy.world
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    SMTP provider

  • Guix @lemmy.ml
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    The goblin and the shepherd

    spritely.institute /news/spritely-nlnet-grants-december-2023.html
  • 3DPrinting @lemmy.world
    callcc @lemmy.world

    Sharp corner algorithm

  • Selfhosted @lemmy.world
    callcc @lemmy.world
    Added dark mode

    Filesystem Hierarchy Standard - Reference Poster / Cheatsheet