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bpcomp @lemmy.world
Posts 2
Comments 15
iPhone survives 16,000 foot drop from Alaska Airlines flight where panel ripped off
  • Totally respect you for saying you don't get it. Way better to admit what you don't know.

    In a vacuum, you would be correct that things falling to earth would just keep accelerating until they hit the ground. But we have air which slows things down. Everything that falls in earths atmosphere reaches it's terminal velocity if it falls from a high enough height.

    One way to think of it is to think about how anything falling in air has to push the air below it out of the way to fall. If I just jump out of a plane, I'm going to accelerate to a velocity that will likely kill me. Now if I bring a parachute, I'm bringing more weight, but I'm also able to push against a lot more air and the amount of air I push against will slow me enough that even though I'm still falling, my terminal velocity is low enough that I can survive.

    The more air something can push against in comparison to it's mass, the lower it's terminal velocity. That being said everything falling in our atmosphere will reach a point where gravity can't pull it through the air resistance any faster. The force of gravity and air resistance are balanced. That is it's terminal velocity.

  • GM’s hydrogen ‘power cubes’ will be used in cement mixers and terminal tractors
  • I've heard prayer warrior since I was a kid in the 80s. The idea is that the prayer warrior is fighting a spiritual battle instead of a physical one. How is it a battle? Well when they start praying, Satan will start to attack with doubts and fears. So it's a fight to preserve and continue praying.

    All garbage as far as I'm concerned, but to them is has nothing to do with changing the meaning of words. It's the best way they have to describe how hard it is to pray for hours on end for multiple days when you have a brain telling you that this is silly.

  • PlayStation To Delete A Ton Of TV Shows Users Already Paid For
  • The problem as I see it is a violation of expectations. If I "buy" something, there is no expectation that I will be deprived of that thing in the future unless, (A) it's a consumable and I e used it up, (B) it's capable of wearing out and I've done that myself, (C) it's a subscription service where you pay for the time You've used it.

    In the case of digital assets that I've been sold, it can't be used up and it can't wear out. I did not subscribe to the digital asset, I bought it.

    Violating the expectation of a purchase and then not fully making the buyer whole is trying to change the transaction type to a subscription after the fact.

    If the digital content providers want to pull these kinds of tricks, then they can't tell us we are buying the content. They must be up front and tell us it's a rental whose length is undetermined. The rental may be for our whole lives, or not.

    Anything else is a bait and switch and makes people angry.

  • Random things learned at the Rockwell Automation fair in Boston
  • It is a few years down the road but I agree. I talked to a guy at the conference who had only used Studio 5000 for the first time at the conference. The whole plant he supported was running on MicroLogix and used RSLogix 500. Now I think they can keep running even after the software is EOL, but some places will be forced to upgrade to stay in regulatory compliance.

    Maybe that's what you do when you want manipulate some more sales.

  • PLC @lemmy.world bpcomp @lemmy.world

    Random things learned at the Rockwell Automation fair in Boston

    I attended the Rockwell Automation fair in Boston and thought I'd share some of the things I learned.

    1. RS Linx and RS 500 will be end of life in 2030. We have a few old MicroLogix and SLC around and have plans for them to be retired or upgraded before then.

    2. As of Studio 5000 V35, FTLinx is the default instead of RSLinx. Some newer software only works with FTLinx.

    3. If during the pandemic, you bought an Allen-Bradley PLC off eBay or something, it's possible that you got a counterfeit. If you upgrade to V32 firmware, you should get a warning. If you upgrade to V33+, you can permanently brick the counterfeit PLC. Good idea to flash all PLCs to V32 before going any further with firmware upgrades.

    4. If you have a Studio 5000 Pro licence, then you have access to the SDK which allows you to automate some Studio 5000 functions like uploading and downloading of the ACD file. In the next release, they plan to have L5X and L5K file access. This potentially opens up making an automated home brew version control where you upload the L5X from the PLC and send it to git where it compares the text with the last version and shows you the changes. I know they sell a version control product (Factorytalk Asset Center), but not every shop wants to fork over that kind of cash.

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    Love Anduril
  • Fair enough. Seems like it could be programmed in but I don't know if it requires more memory or processing than is standard for flashlight controllers. But if it's a custom light, then you can design your control board to have more umpf and use a customized firmware.

  • Love Anduril

    So my Sofirn SP10 Pro was freaking out today. I don't think it was some weird mode I got into but whatever it was, I couldn't get out of that messed up state. As I was going to bed I realized and Anduril is awesome and there must be some reset procedure. Looked it up and had my flashlight working again and back in advanced UI in under a minute.

    I really appreciate ToyKeeper and the awesome programming she has done.

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