I’m a technical kinda guy, doing technical kinda stuff.

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Joined 2 年前
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Cake day: 2023年9月27日

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  • It’s BLE - Bluetooth Low Energy.

    Basically devices with BLE can listen for a wake-up command and turn on, similar to the “magic packet” of wake on Ethernet.

    Super convenient for “find my device” applications, also nice to be able to connect and activate the device without having to press a power button like a peasant.

    It also means that most devices with BLE end up flat within a month. I had a speaker with BLE and had to deliberately download a much older version of the Android partner app to turn it off, as they dropped the option to do so in later versions for “convenience”. With BLE on it would be flat in about 6 weeks regardless of whether I’d used it or not , which really ruined ad-hoc usage for me.



  • Dave.@aussie.zonetoYou Should Know@lemmy.worldYSK how to unclog a toilet
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    1 个月前

    Australian here.

    Step 1: design your damn toilets so they do not clog.

    Step 2: there is no step 2.

    Seriously, half a century of toilet use here in Aus and I’ve never caused - or discovered even - a blocked toilet at home.

    Clearly the fact that I can buy a toilet plunger from the local hardware store indicates that this can happen here. But it seems that every American household has a toilet plunger and poop knife on standby and many articles are devoted to what clogs, and how to unclog, American toilets.

    There are better designs for both toilets and plumbing out there guys, maybe you should look into using them.


  • This kind of reliability is huge for prosthetic limbs, fitness trackers, and robotic arms, where precision and durability are non-negotiable.

    Thanks, AI slop! Sensors that have been durability tested for a few hundred cycles will be perfect for prosthetic devices that can do that in half a day of office work, or fitness trackers that can do that in five minutes, or in robotic arms that can perform that kind of movement in 60 seconds! I’m going to use them in my next safety critical robotics project for sure!















  • standard practice to find these potential leaks with intensive pre-flight checks to identify and solve these issues before they escalate into a catastrophe.

    Except these particular leaks are due to vibration modes (on the newly designed vacuum jacketed fuel lines) that seem to be only present at high g’s towards the end of the burn.

    After the first ship to use these new lines blew up, SpaceX made some changes and conducted a minute-long test firing on the ground of the second ship. A minute of the rocket going through various thrust levels on the ground is plenty of time to pick up issues if it was going to be visible on the ground.

    Presumably it looked ok, so they launched it, and the second one blew up. They probably added more sensors on those lines, because they seem to be pretty sure that vibration modes are the issue on those lines now.

    Yes, you could model this, and no doubt they did to some extent, but nothing beats testing in real life unfortunately.