Oh no, you!

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Joined 12 days ago
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Cake day: November 3rd, 2024

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  • I love how features like these are quickly adopted by some dev in some basement, resulting in support built in the OS and automatically supported.

    For example, I recently got myself a brand new Lenovo Legion 7, and the intention was always to nuke the windows install and get Linux up and running. I was curious about the hotkey too adjust the fan/cooling schema, as it seemed to rely on some proprietary Lenovo windows program.

    Less than an hour after picking it up at the post office I had a basic Linux Mint ip and running with the GPU drivers working well, and the hotkeys worked out of the box.







  • neidu3@sh.itjust.workstoscience@lemmy.world*Permanently Deleted*
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    11 days ago

    Price: Don’t remember. I fired off a message to the guys in manufacturing, I’ll let you know if they have a price. We go through quite a few of these annually, so we have a bulk discount when buying them.

    How: Magic, I guess. Also, I found a link to the ones we use: https://www.microchip.com/en-us/products/clock-and-timing/components/atomic-clocks/embedded-atomic-oscillators/csac

    When we prepare for deployment, they’re connected to a docking unit which provides a clock pulse derived from a GPS signal for high precision. Then the battery pack is attached, the subsea unit is assembled, and everything is deployed, usually via ROV. It’s important that it’s kept powered the entire time upon retrieval docking, as we can then calculate a linear drift value and correct for this in the recorded data.

    UPDATE: We bought “Maaaaaaany thousands” of them in 2018, and we paid 1850 USD per chip. Come to think of it, I remember hearing claims back then that we’d bought 75% of the worlds supply.


  • neidu3@sh.itjust.workstoscience@lemmy.world*Permanently Deleted*
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    11 days ago

    Some work related trivia I’d like to share with you: My job involves deploying sensors on the seabed to record data. These sensors are battery powered, and rely on highly precise timekeeping to be correct. These devices are synchronized before deployment, and upon retrieval ~2 months later we want none or as little clock drift as possible.

    Tumbleweed sounds

    I’m glad you asked: we achieve this by using CSACs - Chip Scale Atomic Clocks. They are pretty much what the name Implies, and after synchronization it is able to keep the time much better than anything else. Normal clock drift upon retrieval is usually less than a millisecond, and that drift is due to (uninteresting factors not directly related to the CSAC itself)

    CSACs cost a small fortune, but they’re the size of a matchbox and make it all possible. It’s amazing how small atomic clocks can be.