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Cake day: February 1st, 2024

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  • Oh they absolutely do! My only point is that grid supply must equal grid demand. There are many ways to achieve this, as folks here have pointed out.

    Throttling power generation (turning off/disconnecting PV from grid for example), and storage (chemical, heat, or hydro battery) are all established technologies, they just need to be implemented properly to avoid supply/demand mismatch.


  • If it’s a low resistance path to ground, it’ll get very very toasty! If it’s a lousy ground though, then it won’t…but it also won’t consume any power, so it’s not an effective way of scrubbing off electricity.

    A good ground (low resistance) is found in your household wiring (the ground and/or the neutral). Of you short to that…well…you can guess what will happen! (Let’s hope you have proper circuit breakers.)



  • That is not how it works.

    When you short something to ground, it’s everything in between that needs to dissipate the heat. Think about what “sending it to ground” means—it means you connect the hot to the ground. But with what do you connect the two? A wire? Sure, but you better hope that wire can dissipate all that power, because that’s what it’ll try to do.

    You can’t just “dump power on the ground.” That’s not how it works.


  • This gets posted regularly on Lemmy, and while the economic take is tone-deaf at best, there’s a real issue with generating more power than you can use. You can’t just dump grid power — it needs to go somewhere. The grid needs to consume as much as it generates at all times or else bad things happen.

    There are of course solutions, but that doesn’t mean it’s not an engineering challenge to implement.

    Figuring out what to do with kilowatts is easy, but figuring out what to do with megawatts, at the drop of a hat, is substantially harder.



  • qjkxbmwvz@startrek.websitetoScience Memes@mander.xyzCoffee ☕
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    6 days ago

    You can/could also find Coffee HOWTO in your distro’s HOWTO package. (I found a reference back to v0.5 of the document in 1998.)

    Has simple schematics to get you started for the hardware, using the parallel port to toggle relays.

    It’s a very neat little document, and inspired me to write a simple kernel module so I could echo 1 | sudo tee /sys/whatever/coffee0 to turn pin 0 high on the parallel port. (This is silly, and it’s much easier to just do things in user space!)





  • Cool, I recommend it!

    I have my public facing reverse proxy point to my public services, and I also have it set up as a “roadwarrior” VPN to my home. So, I can connect my phone via WireGuard to my VPS, and a local DNS resolves my private services to the private IP addresses in my home network (so, I also run a reverse proxy on my server, for internal services).

    I also have an off-site backup using this — just a raspberry pi and an HDD at family’s, that rsyncs+snapshots over the WireGuard network.

    I’m sure I’m not following all the best practices here, but so far so good.





  • I switched to Technitium and I’ve been pretty happy. Seems very robust, and as a bonus was easy to use it to stop DNS leaks (each upstream has a static route through a different Mullvad VPN, and since they’re queried in parallel, a VPN connection can go down without losing any DNS…maybe this is how pihole would have handled it too though).

    And of course, wildcards supported no problem.






  • At this point, they no longer obey the laws of classical physics, and the resulting quantum phenomena — known as relativistic effects…

    This is…not how I would word things. Atomic physics is usually not in a classical (Newtonian) regime, and a quantum treatment is standard.

    Adding relativistic effects to the quantum treatment is also standard, but many aspects of e.g. the hydrogen atom are reasonably well described without relativistic effects, though of course relativistic effects do matter.

    Nitpicking aside, neat stuff!