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Sleepkever @lemm.ee
Posts 0
Comments 26
At least we know it works 🤷
  • But that is an easily solved problem. Take the design of the James Webb, substitute the super cooled infrared camera and replace it with a superconducting magnet setup. Fly this setup to L1 of mars and start global warming.

    I didn't come up with that. Someone at NASA did. Years ago: https://astrobiology.nasa.gov/news/how-to-give-mars-an-atmosphere-maybe/

  • EcoFlow’s $200 PowerStream is so clever, you might buy a $4,000 solar generator
  • There are ways to somewhat fix it for circuits with a single use.

    Fixing the same example: A 16A breaker for the solar feed in, a single 16A breaker for all the consuming appliances on that circuit. And another 16A breaker on the feed in for that circuit is an example that is sometimes used in the Netherlands to add a feed in to an existing circuit with a single outlet connected to it. Meant for washingmachines for instance.

    This ensures that the circuit on all circumstances has a maximum current of 16A flowing over any wire by also measuring the outgoing current of both feed in circuits. But if you have multiple outlets you'd still need to stiol measure at a single place or use low enough breakers per outlet that the total stays below the 16A. Which the UK might have if I recall correctly.

    Then again this is not a normal setup and requires change in the electric circuit of the home. Which most consumers won't even realize. Like I said, if everyone keeps to the fine print this thing probably has and limits the extra plug-in solar panels to 1 per circuit, it's unlikely to actually cause issues because of overdimensioning of the wires. And the safety margin built in which is likely how they have gotten approval. But ignoring or not reading that text and plugging multiple in on the same circuit can and will cause a fire hazard with heavy consumers on the same circuit.

  • EcoFlow’s $200 PowerStream is so clever, you might buy a $4,000 solar generator
  • The breaker only sees the current flowing through the breaker though. Not the additional current provided by the solar panels since those don't flow through the breaker. So it will pop later then that the cables are rated for, therefore introducing an overheat and fire hazard.

  • EcoFlow’s $200 PowerStream is so clever, you might buy a $4,000 solar generator
  • Yep, I'm not exactly sure on the technical details but it works with multiple inverters. Otherwise having a street full with solar panels on every roof would still be a hazard if the power went out at a distribution junction for said street and repairs would have to be made.

    If there is no powerplant feeding some energy, all inverters should shut off. Fixed installs and plug and play variants alike. I'm actually amazed that there are parts in the world where this isn't common.

  • EcoFlow’s $200 PowerStream is so clever, you might buy a $4,000 solar generator
  • Surprisingly, no. Most inverters in the EU must come with island protection. Meaning that if there is no AC from the grid it immediatly switches off the inverter or the battery, there is no stand alone operation.

    There are some systems that allow it but they are rare here and require the mains side to be fed trough the inverter itsself ensuring it's never back feeding into the grid when there is no power with the same island protection, or less commonly there is a transfer switch of some kind also eliminating the issue. And either should obviously have a main kill switch on the breaker board for emergencies that also switches off the in home power with 1 action.

    But most importantly, either of those options is not plug and play and will require an electrician that hopefully does know what he's doing.

  • EcoFlow’s $200 PowerStream is so clever, you might buy a $4,000 solar generator
  • The cables in your walls are designed for a certain maximum current before they start to heat up. This current is limited by your breaker.

    Now if you introduce a plug in solar setup your current is limited by your maximum breaker capacity + whatever your solar setup can generate.

    So if I'd use the specs from the article and apply it to a normal dutch home situation: 16A breaker, + 800W at 230V, which means ~3.5A = 19.5A max. which is probably still fine for short durations.

    But now some genius doesn't read the fine print and hooks up 2 or 3 on the same circuit. There is no electrician that tells him that's dangerous because it's all self installed and he doesn't know any better. And all of a sudden you are up to 26.5A and you got glowing, smoking wires in your walls...

  • Is Mastodon's Link-Previewing Overloading Servers ?
  • It is not, but a write amplification of 36704:1 is one hell of an exploitable surface.

    With that same Raspberry Pi and a single 1gbit connection you could also do 333333 post requests of 3 KB in a single second made on fake accounts with preferably a fake follower on a lot of fediverse instances. That would result in those fediverse servers theoretically requesting 333333 * 114MB = ~38Gigabyte/s. At least for as long as you can keep posting new posts for a few minutes and the servers hosting still have bandwidth. DDosing with a 'botnet' of fediverse servers/accounts made easy!

    I'm actually surprised it hasn't been tried yet now that I think about it...

  • Smart devices are turning out to be a poor investment
  • You might want to try out ZHA then. Its a bit younger so it doesn't support lesser known devices that z2m does and it has its quirks with other devices. But it comes almost out of the box with HA and is a 1 click install. The latest HA update brought firmware updates to the frontend, but I believe z2m already had that for a while.

    I have been running zha for half a year with some Ikea lights and some nous smart plugs and the only moment it has misbehaved is when the power to one of the router nodes went out and it stopped sending zigbee messages to certain other nodes.

  • Real-world CO2 emissions of cars are 20% higher than indicated. For plug-in hybrids they are 350% higher.
  • It's the other way around. Companies in the Netherlands lease cars for their employees here in the Netherlands. Usually for people that travel a lot with for their job or just as a bonus perk that comes with the job instead of salary. And the boss pays for all the gas and maintenance as well.

    So either take the effort to charge, or even charge at home and get refunded the electricity costs. Or just fill it up with free gas which only takes a minute. Guess which happens the most?

    The only time I saw some of those oversized and really popular Mitsubishi Outlander PHEV use a charge cable was if they wanted to take a good parking spot...

  • How do you keep your home servers online during powercuts?
  • There are inverters that support battery backup, recharging from solar and grid power that are supposed to go between your grid tie-in and the rest of your house. Quite a ways more expensive, but the battery capacity is probably relatively cheap compared to UPS power and is essentially a backup for your entire house.

    The one I read about a while ago was a Growatt that is basically an all in one box. Can provide power from batteries, recharge from solar or grid power, feed back excess solar power to the grid, etc, you name it. And I can imagine other brands producing the same solution.

    I'm lucky enough to live in a country with almost no power cuts though. I think we have at most 1 a year for max 10 minutes. So can't say I have any experience with it myself.

  • Baldurs Gate 3: first conversation with Withers
  • And let's not forget: it's full AAA price, but it feels like a finished game without hidden microtransactions for cosmetics or DLC that actually should have been part of the main game. Mod support is also free which is apparently not a given. Looking at you Bethesda with the starfield rumors.

    Gameplay is modeled to be enjoyable instead of a time sink just to get you to play more.

    You can play co-op with friends if you want but it doesn't force you to always be online.

    Actually, the more I think about, it's sad how low a bar we have set for new games these days. And the worst part is, most new games can't even pass this...

  • *Permanently Deleted*
  • The biggest red flag is probably that they claim to just be the WireMin protocol, but haven't published any protocol specifications. In the spirit of open and unmoderated communication I would hope they would at least publish their protocol specifications, even if they won't opensource their own client for it.

  • Another good reason not to open port 22
  • Honestly the default config is good enough to prevent brute force attacks on ssh. Just installing it and forgetting about it is a definite option.

    I think the default block time is 10 minutes after 5 failed login attempts in 10 minutes. Not enough to ever be in your way but enough to fustrate any automated attacks. And it's got default config for a ton of services by default. Check your /etc/fail2ban/jail.conf for an overview.

    I see that a recidive filter that bans repeat offenders for a week after 10 fail2ban bans in one day is also default now. So I'd say that the results are perfect unless you have some exotic or own service you need fail2ban for.

  • Is firefox with ublock or brave better in terms of resource consumption?
  • You think they can't earn money from users that are not logged in? Sweet summer child.

    They will still show ads on the search page. The dirty affiliate redirects they will think off will still work in their browser. You are effectivly using a software platform they have total control over. Offcourse they are going to find ways to earn money.

    It's like saying Facebook can't track me because I'm not logged in. Or Google Ads don't earn money from me because I'm not logged in.

  • Is firefox with ublock or brave better in terms of resource consumption?
  • You are probably better off switching back to Edge, Opera GX, Chromium or even Chrome instead of Brave if you still want to use a chrome based browser. They have made some questionable decisions in the past.

    BAT cryptotokens

    So brave rewards you with their own injected advertisements with crypto, probably their most discussed feature. Could be a good idea if implemented correctly. But the real issue here is that they block advertisements and then add their own "privacy minded" advertisements back into the page for which you and they earn some crypto. So not only do you still see some ads with the default settings, now the site/content creators get nothing and brave earns money of your page views.

    Creator donations

    Speaking of content creators: At some point brave also had donation links on Youtube for those content creators that now earn less trough blocked advertisements and make brave money. Showing these donation links for specific creators, with their name and photo attached, with no opt-in or consent from creators themselves. Tom Scott even asked if they could refund everyone that donated to which they replied "Refunds are impossible". It looks like they changed the way that works after feedback though so no funds are being donated anymore unless the creator verifies in brave.

    Affiliate links

    At some point brave changed URL's from binance, even when typed in manually, directly to their affiliate link. They even publicly apologized after that. Which shows they are willing to change URL's to earn some money off you.

    So yeah you could probably still use Brave even if you disable the crypto aspect but from actions in the past they have shown they really want to earn money off you. And they haven't hesitated to explore boundaries of what people find acceptable to get that money in the past. I personally wouldn't trust them to not do something questionable in the future either, crypto or no crypto.

  • New feature in nightly? :o
  • Not 100% true according to the description on that page. It just hides the banner if possible but it will automatically accept some or even all cookies and tracking if it is required for the site to function. And their choice if they accept some or all depends on "whichever is easier to do".

    And functionality of the website could be social media or video embedding which might be "required for the site to function" in the eyes of the extension maintainers. But which will send data to Facebook, Google, and the likes. That could be okay depending on what your stance but a good thing to be aware of.