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Joined 2 years ago
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Cake day: July 7th, 2023

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  • Awsome! Yea, I’ve still got a lot to learn about antennas. I’ve been working towards my general HAM license, and antenna design starts to come into play at that point.

    I’ve also been trying to incorporate a raspberry pi into another node I’m working on, but it’s a pi zero 2w. I’d like to build a fully off grid, solar powered ADS-B node. The current build is too much for even 3 18650s. Not sure it’ll ever work out. The ultimate goal is a mesh repeater set up with a pi for occasional serial control and updates. We’ll see if I ever get there.




  • Yea, it’s definitely not ideal for a high traffic repeater. My area’s got pretty minimal traffic, so I don’t expect there’s enough traffic to cause interference right now. When I get to a V3, I’ll probably be upgrading to a wider enclosure to get better spacing. The same company has a 200mm tall box I could mount horizontal, and put the antennas on the long side.



  • I work at an Infrastructure Cloud company. I design and implement API and Database schemas, I plan out backend workflows and then implement the code to perform the incremental steps of each workflow. That’s lots of code, and a little openapi and other documentation. I dig into bugs or other incidents. That’s spent deep in Linux and Kubernetes environments. I hopefully build monitors or dashboards for better visibility into issues. That’s spent clicking around observability tooling, and then exporting things I want to keep into our gitops repo. Occasionally, I’ll update our internal WebUI for a new feature that needs to be exposed to internal users. That’s react and CSS coding. Our external facing UI and API is handled by a dedicated team.

    When it comes to learning, Id say find a problem you have and try to build something to improve that problem. Building a home lab is a great way to give yourself lots of problems. Ultimately, it’s about being goal oriented in a way where your goal isn’t just “finish this class”.




  • ramielrowe@lemmy.worldtoTechnology@lemmy.worlddatacenter liquid cooling solution
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    3 months ago

    Yea, it’s the combo of the chiller and cooling tower is analogous to a swamp cooler. The cooling tower provides the evaporative cooling. The difference is that rather than directly cooling the environment around the cooling tower, the chiller allows indirect cooling of the DC via heat exchange. And isolated chiller providing heat exchange is why humidity inside the DC isn’t impacted by the evaporative cooling. And sure, humidity is different between hot and cold isles. That is just a function of temperature and relative humidity. But, no moisture is exchanged into the DC to cool the DC.

    Edit: Turns out I’m a bit misinformed. Apparently in dry environments that can deal with the added moisture, DCs are built that indeed use simple direct evaporative cooling.


  • Practically all even semi-modern DCs are built for servers themselves to be air cooled. The air itself is cooled via a heat exchanger with a separate and isolated chiller and cooling tower. The isolated chiller is essentially the swamp cooler, but it’s isolated from the servers.

    There are cases where servers are directly liquid cooled, but it’s mostly just the recent Nvidia GPUs and niche things like high-frequency-trading and crypto ASICs.

    All this said… For the longest time I water cooled my home lab’s compute server because I thought it was necessary to reduce noise. But, with proper airflow and a good tower cooler, you can get basically just as quiet. All without the maintenance and risk of water, pumps, tubing, etc.







  • ramielrowe@lemmy.worldtoTechnology@lemmy.world*Permanently Deleted*
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    8 months ago

    Honestly, I don’t mind them adding ads. They’ve got a business to support. But, calling them “quests” and treating them as “rewards” for their users is just so tone-deaf and disingenuous. Likewise, if I’ve boosted even a single server, I shouldn’t see this crap anywhere, let alone on the server I’ve boosted.