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Joined 2 years ago
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Cake day: December 15th, 2023

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  • My Cyberpower UPS started going to shit last year and I ended up replacing it with a LiFePO4 power station that advertised a switching time fast enough to use as a UPS. I spent about $630 for a power station that can handle 1800W for an appreciably longer runtime than the lead acid battery backups, essentially one kilowatt hour. So far so good. My only complaint is that the outlets are on the front, which isn’t an ideal form factor for UPS duty. Plus, LiFePO4 is supposed to be good for ten years or so.









  • ITT: a whole bunch of people more worried about scratching or bumping their car in a parking lot than possibly killing themselves or others on a highway with an unsafe lane change.

    Adjust your mirrors so cars approaching from behind in the lane to either side start entering your side mirrors as they start leaving your rearview mirror. There should be a point where you can see one half of a car in the side mirror and the other half in the center mirror at the same time. You should not be able to see your own car. You might not be able to dial this in while parked and might have to adjust on the road, but it’s absolutely worth it.

    If you need to see the lines while parking and your mirrors don’t auto-move in reverse, explore methods that don’t rely on mirrors. I used to park on a long, squiggly driveway. I’d crack the driver door open to see where the edge was while I was reversing, and I could follow it precisely at speed. If your car allows you to crack the door open without shifting into park, give that a shot (you’re wearing your seatbelt, right? Don’t fall out and run yourself over.). Otherwise you could try rolling down a window and peeking out that way.


  • The leaders also discussed concerns over US interest in Greenland, where Denmark recently announced a $2 billion military investment to counter potential territorial ambitions.

    This has arisen in me a suspicion that Trump’s mandate that the US takes Greenland is a ploy to divert some NATO member funds away from Ukraine, and not actual territorial ambition.

    Regardless, Greenland is considered NATO via Denmark, and there has been at least some signaling that Congress would resist Trump pulling US out of NATO. It would be disastrously moronic to piss off NATO, and unfortunately “disastrously moronic” doesn’t seem to be a deterrent for Trump. I don’t know where this is going, but I don’t like it either way.






  • As an engineer who sometimes has to reverse-engineer stuff to integrate with CAD, flatbed is the fastest, easiest way. You don’t even need to scan with a ruler or known scale either. If you scan at a known DPI, and you know the resolution, you can scale the image in CAD to (horizontal resolution/DPI) width by (vertical resolution/DPI) height. I don’t know how FreedCAD works in this regard with sketch pictures, but in SolidWorks it’s important to have an arbitrarily-sized, dimensioned piece of construction geometry in the sketch beforehand to lock in the scale (of there’s no existing sketches or solids). Otherwise, the scale can get fucked really easy with no way to unfuck them without starting over, as sketch picture dimensions entered when placing the image don’t turn into defining dimensions automatically.

    Edit: as for the camera, shooting with a long lens from really far away means the light rays entering the lens are nearly parallel rather than diverging. YouTuber “Stuff Made Here” has a recent video that briefly touches on this. https://youtu.be/aXfTgCCsRSg?si=FegiCAgFMKj6tDkv