• 0 Posts
  • 34 Comments
Joined 1 year ago
cake
Cake day: June 14th, 2023

help-circle


  • Most cheap non-dimmable LEDs have drivers that use resistors to determine the current to drive through the LEDs. As a rule, these are always set too high to overdrive the LEDs (sometimes as much as twice their rated current) for marginal brightness gains and to burn out the bulb prematurely. I’m obviously unable to actually see directly into the operation of the great minds that design LED lightbulbs but logic leaves me with only those two plausible conclusions, I’ll let you decide which motivation you think is a bigger factor for most manufacturers.

    Conveniently, most manufacturers carefully fine-tune this value to prematurely destroy the LEDs at just the right time, which requires careful balancing of resistors, and even MORE conveniently (for us) the cheapest way for them to do this is typically to use two resistors. And MOST conveniently (for us), if you were to carelessly break one of the pair of resistors they use, and leave the other one intact, the current would immediately drop to a very reasonable and appropriate level, generating much less heat, drawing much less power, making LED death extremely unlikely, and only modestly reducing brightness in many cases, because LEDs have non-linear brightness and the heavily overdriven ones are typically FAR beyond the point of diminishing returns. In some cases the reduction in power results in basically no visible difference in light output. In some cases it can be argued they’re literally stealing extra power from your electricity bill and using it as an electric heater for no purpose other than to burn out your own light bulbs prematurely so you have to replace them.

    The good news is, like I said, removing one of the responsible resistors instantly solves the design flaw and is usually quite easy even without any special tools or electronics knowledge. BigCliveDotCom calls this “Doobying” the bulbs after the Dubai bulbs that were mentioned in other comments. If you watch some of his videos about LED bulbs you should be able to see the pattern of which resistors to remove, if they are on the board they will basically always be right next to each other and relatively small values (typically in the 20 ohms to 200 ohms range). The only modification I make to his procedure is that I prefer to remove the HIGHER value of the two resistors instead of the lower one, which results in perhaps somewhat less lifetime preservation (still much more than the original setting) and less power savings, but more brightness, and is usually adequately good for my purposes. I also use sturdy tweezers to remove the resistor instead of a screwdriver which seems to me that it would have a higher risk of collateral damage.

    Is it a lot of work for a single light bulb? Kind of, yes. But once you get it done a bunch of times, you’ll probably rarely have to do it again, as these bulbs last almost forever. In fact, I have yet to have one actually fail, I am mostly just replacing the occasional old unmodified LED bulb from time to time.

    This will not work with dimmable bulbs or certain fancy high end bulbs. Also some are much, much easier to modify than others. Clive calls the ones that are relatively easy “hackable” and it’s really a crapshoot to find them. Some have covers/bulbs/diffusers that are nearly impossible to remove without catastrophic damage to the bulb and/or your hands. Others simply use a different circuit design that doesn’t have resistors. Some only have a single resistor, meaning to change the value you need to solder a new one in its place. In my experience, the bargain-basement, junkiest, least reliable bulbs tend to be the easiest to hack this way and often skimp on things like “gluing the lens on” so it’s easy to get off. But you’ll have to experiment to find a brand and style that works well for this.



  • Keep the gray plastic. Remove black clip around the vertical wheel post in the gray plastic. Remove wheel and wheel post. Buy new wheel. Installl new wheel. It will be easier to find a new wheel once you have the old wheel out so you can take measurements. but it’s likely something pretty standard, off-the-shelf. Wheels are something that companies buy, they rarely build them themselves. They typically come as a castoring assembly with wheel, axle, spindle, and attachment post in a variety of common sizes and with a dizzying variety of actual wheels.


  • a) Forecasts are very resource-intensive, they are performed on a specific schedule using a computational forecast model. Updating the predictions would require inputting new data and running the model again, and by the time they do that, the next forecast will already be out.

    b) Do they know it’s wrong? Where did you get the temperature? From an official weather station? If not, there is no reason to imagine that someone is noticing that this one particular model run was wrong in one particular spot across the whole country and trying to fix it in real time.

    c) If you did get the current temperature from an official weather station, that IS your update for it. Real time data from official weather stations is always going to trump the forecast model. What would be the point of updating the forecast when the current measured data from the weather station is now available? That’s like driving down the highway and saying “I was predicting my speed would be close to 65mph, but due to the heavy traffic I’m seeing today, I’m going to re-estimate my speed to be 45mph” when you have a perfectly accurate speedometer right in front of you telling you exactly what speed you are going at all times. Forecasts are only useful for the future, and they can be wrong.


  • It is. The web was eventually corporatized and the corporations sucked all the air out of the room suffocating anything too small to compete. The fediverse is, if not taking it back, at least opening a space for those who don’t want to consume from a fully corporatized web. These include many of the people who used to make “websites” instead of “apps” or “platforms”. When people complain that it doesn’t have as much content as say, Reddit, I look at that as a benefit, it’s helping solve the (massive) discovery problem by self-curating thoughtful people who can curate content intelligently and provide real opinions and meaningful thoughts. The signal to noise ratio is much higher, and it’s refreshing.


  • They’re only lying as long as people can continue to over and over find their way around the obstacles they place in the way, and it gets harder all the time. They have more money and more resources and more organization than the hackers trying to defeat them, they’re winning the war of attrition. We may be able to make small breakthroughs here and there, but overall we continue to lose more and more territory, because the amount of effort is disproportionate to the goals. Most of what’s left of the custom ROM community has given up on the losing battle with manufacturers and providers and changed focus to the various freephones but even they have their own troubles and are fragmented and short-lived. Between carriers, manufacturers, and content providers the whole mobile ecosystem is designed to be impenetrable. It is intentionally a fortress full of deadly traps and open source supporters have no hope to breach it anytime soon.



  • It’s tough, but I hope you can make it work, because we love having you here!

    Big cities are where the good jobs are, but they’re also where all the people are, and not nearly enough housing or land area for all of them, so it basically quickly turns into an unaffordable nightmare unless you have generational wealth/inherited property, which of course you won’t. Unfortunately it seems this is largely where the default “Canadian immigrant experience” will put you, and it’s really not working for anyone as far as I can tell.

    I’d argue that you will do better to find yourself a small town to move to that’s more remote. Not necessarily somewhere far north or completely outside civilization (although there are many such places in Canada, and in many cases Canadian government will actually give you extra money if you live in these areas as they can be both extremely remote, extreme weather, and extreme cost of basic necessities) But you can find many small less urbanized areas throughout the country, some are farming communities, some are industry towns (lumber, pulp and paper mills, mining, etc) some are better connected and serviced than others, but generally speaking the further away you get from the major cities and capitals, the cheaper housing will be. Other stuff gets more expensive though, but housing is such a dominant cost of living problem right now that it’s still the main factor you’ll benefit from trying to minimize. Anywhere outside the major cities, jobs will probably suck, but there will be some jobs. They won’t be jobs that take advantage of any education you have, they will be simple jobs in hospitality, services, sales, business administration and other less skilled labor that don’t necessarily pay very well. Cost of living is much lower in more rural areas of Canada – depending on how you are willing to live. It can be a harder life, especially if you’re used to city life. If you can get some support in the community and are willing to sacrifice some conveniences I think it is probably one of the better and more cost effective ways to live for many people right now. But it’s not for everyone, and it may be especially tough for an immigrant as small communities can be insular and isolating. If you can find towns with a Ukrainian diaspora, that would be ideal, and there are already lots of them (and more every day!). Especially in the prairie provinces (Alberta, Saskatchewan, Manitoba) which have long had a significant Ukrainian community well established.

    For jobs I’m really not sure what the outlook is for a Ukrainian immigrant. I know there’s a lot of bureaucracy and obstacles in getting education and skills recognized over here, which is really a shame. I seem to find a lot of Ukrainian people working in hotels and restaurants for example, because it requires no formal certifications or proof of anything to get such a job, however often these people have extensive education and skills. It’s a shame for everyone involved, but a job’s a job, and you need a job to pay the bills, so at least there’s something. If you can find a way into something like the trades or industry, the money is crazy good and people are desperate to hire right now, but again, the process for getting people trained and certified is long and probably very frustrating.

    I don’t know what you expectation of standard of living is like. I know Ukraine used to be quite a poor country overall, but I think it was quickly improving before the war, and like Canada, I think there was quite a significant variation between the relatively wealthier cities and the remote rural towns. I think you will find it overall is similar here, although the prices and scales will probably be much different.

    Wish you all the luck, and hope you have a great experience here.



  • It’s possible but not likely or common. Glass is stronger than most people give it credit for. Most “hollywood” glass is actually panes of sugar. You could certainly arrange things so that the gun’s pressure wave has a good chance of stressing and breaking glass, but it would take special preparations and effort and the gun would probably have to be very close to the glass. It’s almost unheard of for it to happen normally unless you specifically shoot at the glass.

    Someone like mythbusters could probably test this pretty effectively, but based on my experience around guns and glass, I suspect they’d come to the same conclusion.

    A not directly related but still interesting video was done by the slowmo guys on youtube


  • CANDU is one of the best reactor designs currently running, in my opinion. The problem is that it’s expensive to build, and requires expensive maintenance, and in a world that loves to cut corners and find efficiencies that is not popular. But it is solid, it is safe, and I support many more of them being refurbished, maintained and built in this country despite the cost.

    Advanced CANDU on the other hand, had little in common with CANDU despite the name, and bowed to all of the previously mentioned pressure to cut corners and find efficiencies resulting in a dangerous and ultimately non-viable design that basically killed Canada’s nuclear industry. It was a classic boondoggle, and while I was and am infuriated with the way Harper killed it and put it out of its misery, the real mistake had been pursuing it down that path in the first place which was a decision that came well before his time and was based on global circumstances that made it simply impossible to justify.

    I would love to see even more advanced reactors being researched, designed and built here, modular, pebble bed, sodium, thorium, all of it. But sadly I think that is mostly unrealistic given the current state of our nuclear industry. CANDU is however at least one proven technology that we can and should continue to take advantage of. Even if we will probably never be nuclear leaders again thanks to the mismanagement and sabotage of our nuclear industry, at least we can cling to its legacy.


  • It’s veeeeery not standard in Canada. I use it on my phone and most people who see it on the lockscreen treat me like I’m an alien, and it’s about a 50/50 mix of people who simply think 24 hour time is weird (but at least recognize it) vs. people who seem genuinely baffled by the digits they see appearing on my phone and don’t even seem to recognize it as a time at all.




  • No good reason, just historical inertia and resistance to change. People stick to what they’re familiar with, either the imperial system or to common metric units. Making a “metric ton” similar in size to an “imperial ton” arguably helped make it easier for some people to transition to metric.

    Megagram is a perfectly cromulent unit, just like “cromulent” is a perfectly cromulent word, but people still don’t use it very often. That’s just how language works. People use the words they prefer, and those words become common. Maybe if you start describing things in megagrams other people will also start doing it and it will become a common part of the language. Language is organic like that, there isn’t anyone making decisions on its behalf, although some people and organizations try.



  • If you can prove beyond any reasonable doubt that someone is ignorant of facts, and then sure you can call it obvious and good. But when nobody can agree what is reasonable, why is your perspective of good the one everyone must follow? It’s not always obvious. Don’t pretend it is. And things that are reasonable and obvious to you aren’t necessarily reasonable and obvious to others. You aren’t willing to embrace the diversity of human experience and opinion, so you won’t get the benefits of that diversity. Just because someone else has a different idea doesn’t make it wrong. If you think literally every idea that isn’t exactly the same as yours is wrong, then we’re wasting our time here anyway.

    So again, why is your path the one we’re picking? Even if I do agree with it, I am not willing to agree to it blindly, I want to know why we’re supposed to follow your advice/instructions/demands. At gunpoint or otherwise. And that’s why I’ll never follow a totalitarian, because totalitarians never have to explain themselves, and generally won’t. I hope you brought enough bullets if that’s your plan.