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Joined 2 years ago
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Cake day: July 10th, 2023


  • beats dealing with android studio

    It’s been years since I went near Android for this reason, I’ve had some decent ideas for stuff I’d like to do on mobile but was so turned off on developing for the entire platform. Maybe I’ll have to take a look at some of the new frameworks.

    My trouble is I would prefer to write in an embedded style C/C++ for the agricultural stuff I want to do, and all this Java/JS stuff and heavy focus on fancy UX is really not my vibe.



  • Exact same thing happening in Canada. Our systems are all strained to the breaking point, no housing, no jobs, no doctors, degrading infrastructure and nobody with the skills to maintain it. Nobody is even developing these skills thanks to a stagnant education system that rewards mediocrity.

    And our population continues to skyrocket due to unrestrained immigration, depressing wages and pushing unemployment to historic highs.

    Canada was built by immigrants. But I don’t care what colour someone’s skin is, they will not find Canada very welcoming right now. If this country can’t even offer a future to those who were born here, how can it welcome others?


  • Without compromised hardware even igniting a battery is pretty implausible (unless the phone was on charge, and obviously these weren’t) as you’d need to basically short it out and this would be hard even with full bare metal access.

    Pagers are famously hard to hack as well since all they do is display strings. And they aren’t on the public net, they don’t even have IP addresses as they communicate hub and spoke with a big slow RF transceiver.

    Much more likely triggered by a message or long time fuse.



  • evranch@lemmy.catoMicroblog Memes@lemmy.world*Permanently Deleted*
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    10 months ago

    You don’t understand Kessler Syndrome. Starlink satellites are in an orbit that requires maintenance or it decays rapidly. These orbits are used on purpose as they are “self-cleaning”.

    Kessler Syndrome doesn’t even mean that we can’t fly through an orbit, only not occupy it for fear of collision. Space is incredibly, ridiculously large, and the chance of a departing rocket being struck by debris is miniscule.

    In any case, a catastrophic multi-sat collision would only result in a meteor shower. These things are designed to re-enter in 5 years even in normal service.

    I live in rural Canada and Starlink is the only reason I’m able to post this. It’s been a tremendous asset to our lives, and as an aerospace enthusiast I’m all on board as well. As an astronomy enthusiast I’m less impressed but forsee a push into more, larger space telescopes.












  • I designed my heating system around a fairly efficient non-condensing NG boiler that takes 40W for the fan. I can run it and the circulators off my battery bank no problem, and handle a sustained power failure. But only because of the natural gas.

    I’ve been integrating a water-water GSHP into it to provide summer cooling and a supplemental heat source from my solar panels. It works well, but in my climate (Rural Canada) I would be insane to completely remove my gas boiler IMO. Heating demand is just way too high on the sort of days where the power goes out. I’ve been working on plans for a wood boiler but insurance has put their foot right down on anything that burns wood in the last couple years.

    Here in Canada we can’t get lithium at a reasonable price so I have 10kWh of lead-acid (which as you know is actually 5). Doesn’t go very far on a cold winter day with 4 hours of sun and snow on the panels!

    On the upside I haven’t had to hook my generator to my house in years, I’m really happy with my “grid-independent” system.


  • Double would be a COP of over 10. That’s a stretch for an overbuilt GSHP and not even slightly feasible for air-air.

    High COPs are usually easy on a compressor as they represent low compression ratios and low differential temps. For example I can hit around COP 7 in cooling on my scrap heap GSHP, with an evap temp around 10C and condenser temp around 20C. That’s a high side pressure around 100 psi and only 30 psi of differential, “barely working” as far as the compressor is concerned.

    The only way I know to get high COPs is to have an oversized condenser and a way to get your refrigerant below ambient, like evaporative, ground source or overnight radiant so you can get the compression ratio down, unless you know a secret in which case I’m not afraid to burn out a compressor or two trying it out!