Just a smol with big opinions about AFVs and data science. The onlyfans link is a rickroll.

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Cake day: October 11th, 2023

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  • There’s way too many for me to list them all and that’s just some random site; but Blackboard is a decent all-rounder from the instructor side of things but sucks bcz proprietary. Personally I’ve been having pretty decent engagement with OpenLMS which is based off Moodle, but OpenEDX is also getting popular. Google classroom does suck, no argument, and Blackboard is corpo garbage with a slick UI so I can’t really recommend it beyond “steal the UI”.

    Moodle is great if your IT group can support it though - super customizable and doesn’t require the collection of obnoxious amounts of student info like with the alternatives. A little less robust but still much less rigid and soul-suckingly tedious compared to canvas.



  • Huh. So the miserable UI, constant feature reversion, nightmare that is support, lack of integration tools and the historical total lack of action on reported security issues…?

    Have used canvas for years. Canvas is just shitty software, and Instructure are utter bastards to anyone that aren’t mormon and have gotten some incredibly shady contracts to force wide adoption. They’re awful, and this breach just hilights their shit practices.

    Neat that their software is available under aGPL tho, that really matters.



  • Unfortunately because of how ultrasonic transducers work you need an extremely rigid connection between it and the blade - otherwise it’s like having a spring between the two and it completely negates the benefits of being ultrasonic. The easiest way to get that connection is just to weld the blade directly to the transducer. In a consumer application like this, where you’re compromising on basically every aspect in order to fit the form-factor, the losses from a swappable blade would almost entirely negate the benefits of the system.

    In short, to have even the moderately functional product they’ve got, there’s no way for them to have swappable blades. The system just won’t be powerful enough to compensate for the losses.









  • These are all great and ty for writing it up! I just want to pile on about this point:

    What’s stopping them now? There’s lots of copper in the street lamps and various equipment at a store. The answer is that the copper isn’t easy to access. It would take someone way too much time to get any substantial amount of copper from the wires so long as the run back is protected. They would need to rip apart each panel to get to it.

    Nothing is stopping them now. Wire theft is a huge problem and mitigation of the risk is a constraint on any commercial electrical installation. It’s so pervasive that street lamps dont use copper wire anymore; they mostly use aluminum wires, so that people don’t have as much of a reason to lop them over and loot the wiring (they do one, discover it’s not copper and then skedaddle instead of doing the whole row). People absolutely can and do steal wiring, all the time (meth makes you so productive)

    Restricted access is the only real way we have to deal with this (besides keeping lines energized - yes, horrifyingly that’s a very common technique). A couple cameras and a few hundred a month to a monitoring service to keep an eye out for anyone inside the fence is kinda the only option. l-ion angle grinders man, they’re a problem.

    An aside: Carport solar exists, which is basically what people mean when discussing this topic. Unfortunately it’s more or less greenwashing. They do technically work but I haven’t seen one yet that wasn’t severely limited in functionality due to the site and stylistic requirements. They’re no “Solar Freakin Roadways” or anything, but they’re not nearly as useful as the marketing hype would have you believe. They’re large, extremely rigid structures that require drainage accommodation and are very prone to damage due to the nature of the location.


  • You’re also going to have a large energized transmission network running over an area with extremely high foot and vehicle traffic - The low electrocution risk could absolutely be mitigated (unless there’s damage, which is an inevitability for any equipment installed in a parking lot) but that’s not going to be a problem because the entire electrical system is going to be ripped out by a junkie before there’s a chance for anyone to get hurt…

    Then there’s also the additional complexity required to clean elevated panels like that, the difficulty in maintenance, complication to firefighting, the list of logistical issues goes on.

    There’s a middle ground though, which is to simply dedicate the lowest utilization portion of large parking lots to instead house standard ground solar installations. This is being done successfully in many places, as parking lot utilization is down across pretty much every commercial category post-covid so it’s an easy decision to make (especially in locations like dying malls) and commercial buildings often have very robust grid infrastructure already and underground utility conduits (for things like the lights in parking lots). They’re about the ugliest way to site a solar facility, but so much better than a parking lot…