• 4 Posts
  • 387 Comments
Joined 2 years ago
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Cake day: June 23rd, 2024

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  • Not all places have cold water during summer (did the greedy water company already run a heat exchange there?)

    This would work but don’t use a conventional central heating radiator system: moisture would condense on the radiators and pipes, potentially causing wet floors and walls, and eventually mold. A radiator that deals with moisture well is an indoor AC unit, plus it has a fan, thermostat and remote control, and presumably they’re cheap to get when the more complicated outdoor unit fails. Just pump water through the coolant pipes! The water mains pressure is probably enough. (Don’t get an overly smart one or it will complain about lack of communication with the outdoor unit. Or hack it if you’re good at that.)

    Alternatively, an air-to-water heat exchanger (heat pump whose condenser is submerged and evaporator is a conventional indoor AC unit) is way more practical. With cold water, it will use very little electricity and has all the convenience of AC. The output water can be used as preheated feed into your boiler.



  • So do CDs. 💿 If you have a player with a see-through lid, you can see the disc rotate around 2.5 times slower on the last track of a near-74/80-minute disc as opposed to the first. This might not apply with modern (2000+) and/or portable ones with cache (ESP) − MP3 support is a good clue it has the advanced electronics for that. And yes, CDs’ track starts at the center to enable short-play, smaller disks of any diameter between 5 and 12 cm (although slot-loading players only have cutouts for the two standard sizes).

    Players regulate the motor speed based on the data clock (and burners too: there is a pre-recorded “timing” signal even on blank CD-Rs) so technically, a constant-angular-velocity CD could be pressed and played on most players, just with no real benefits. The extra linear velocity at the edge would require increased laser power (or less than 1x speed) when burning, and vinyl killers (in the unlikely case they ever make a CD one) won’t keep up.







  • PLEASE don’t criticize OP for asking what you might see as an insensitive question. I don’t think they have bad intentions and they should be commended for seeking explanations.


    I also used to be ignorant or skeptical about gender, back when I was a Christian. But I think you can figure it out like I did.

    Basically, trans rights mean that gender is no longer purely about biological sex (and now we know even biological sex isn’t binary, look up intersex people). And gender isn’t really scientific, it’s how a person feels and presents.

    If you spend time around queer people (online can be enough) and listen, you’ll develop an understanding of different perspectives on gender. These spaces are meant to be safe (that kind of warmth dragged me in) but therefore please refrain from confronting people there. You might have uncomfortable questions but that’s what [email protected] is for, as opposed to, say, [email protected].

    But yeah, to this day I find some queers’ attempts to make the world more inclusive rather unreasonable, like most neopronouns that have been attempted in the heavily-gendered Czech language.

    And there are people whose gender identity is so out of the ordinary you might never understand. It’s great that you ask questions, even though some people can’t answer as clearly as you’d have hoped. But you still should respect them.

    Feel free to ask more questions in this thread or privately, I’m sorry that my peers are so unwelcoming.


    Also, you’ve exceeded the character limit so “ir identity, and engaging in transphobia?” got cut off from your title. Unlike on Reddit, you can still edit it on Lemmy.





  • Two years ago, I got halfway through sorting a similar kind of bargain bin. Not with food items in a supermarket but phone cases in a convenience store (already unwrapped so not labeled with phone models, so my main guide was camera count and position). I surrounded myself with piles on the floor, camera count on one axis, camera size on another, before I made enough clear space at the bottom of the bin to start piling them up - the most common ones as foundation to prop up a bookshelf-like variety display of about 3-5 each, neatly stacked on top. I then used insertion sort to add to the sorted stack from the assortment. Then I struggled to find floor space for the rare leftover ones so that I could put the rest of the overrepresented ones at the bottom and finish the browsable display. I did all this with my unprotected phone in the other hand pretending to compare it to whatever I was holding but I guess it became too obvious with the uniquely-shaped ones. The cashier walked over and made me throw the rest back as quickly as possible.

    Speaking of ADHD, I specifically asked my psychiatrist to get tested and it came out negative somehow. I think I could really use the meds but the doctor won’t let me. :(



  • Look up “homemade Dubai lamps” or as Big Clive likes to call them, “Dooby lamps”. Basically decrease the power by 30% or more by replacing or removing one of current-sense resistors to get a many times longer lifespan. Very easy with lamps that have a linear regulator on the LED board; ones that have a switching regulator inside need to be disassembled further than just popping off the plastic globe (preferrably by milling into the housing from the SMD side of the board because that doesn’t disrupt the thermal design of the LED board). With the latter approach, I can also fix another common issue: the input inductor going open circuit, usually indicated by flashing and a burned-out bypass resistor (most often 4k7 or “472”) − I just short it, I don’t care about the little extra interference if it mskes the bulb work again.