• 3 Posts
  • 416 Comments
Joined 2 years ago
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Cake day: June 12th, 2023

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  • KNX is indeed a protocol, but there is a whole multi - manufacturer ecosystem around it. It is mostly used in the commercial space. It is literally the ultimate smart electricity ecosystem for reliability.

    Everything that I did is done in the electrical box so you buy traditional push button switches for the walls with very thin, cheap cable, and then your lights as normal.

    It is wired originally with twisted pair bus that delivers power and data. They branched out also into wireless products also now using 898MHz bands (same as zwave).

    The protocol is very tightly regulated but everything is guaranteed to work. It isn’t wireless so it doesn’t have shitty mesh problems like zwave and ZigBee have with many devices. You don’t get bad device behaviors and disconnects with power outages. There are no shitty batteries to replace (and no fibaro zwave devices having ridiculous battery drains when outside of a +/-10C range from 20C).

    It will simply work and keep working for your lifetime, unlike many or most ZigBee and Zwave devices.

    Unlike Starfighter says, It actually isn’t that expensive for basic home users. if you do it correctly and don’t go for “everything being LCD panels”. It is much much cheaper than retrofitting every socket with ZigBee or zwave smart switches. I am fully stripping and renovating my house and it is literally about the same price as doing everything with modern teleruptors, with 10x the functionality. If you include the license, then maybe 10% more expensive.

    It cost me literally 1400€ 32 switches, 16 circuits of on/off lights and fans (or I could use them for roll blinds), and 4 dimming circuits, plus temperature and humidity sensors to smartly turn on bathroom fans. It is €30 for every Shelly wave module which would be 1000€ just for the switches alone with no dimming or sensing. Plus if you are already rewiring you house, you get to save a shit ton of money using small gauge cable with potential-less contacts.

    Don’t get me wrong, zwave is great, but KNX is absolutely king at only a marginal price premium (for standard home users, commercial focused HVAC controllers and such are expensive as hell)

    Edit: also one thing to note is that all UI elements of KNX through pretty much all the manufacturers look like they are from 2010 or earlier (and they often are). I much prefer other options or a Home Assistant tablet or something.



  • Yes but they have much, much , much wider margins than cell phone manufacturers. Yes, phone manufacturers will add a $0.1 DAC/AMP chip instead of a $2 because of profit margins in the 100k unit range. The actual DAC IC chips that are very good are not too expensive. The metal housings are literally more expensive. It is not expensive at all to put a good chip in there, it is all the bean counters saying that they have to increase quarterly profits.

    Plus “audiophile” DACs are literally 80% snakeoil. Because listening is so subjective, they heavily rely on audiophiles’ quest for placebo effect and after-purchase self justification, both of which are a strong phenomenon. Above a FIIo E10k (literally uses a PCM5102, which is very cheap ), you get massive diminishing returns. Then above the ~150 or 200 mark, they all use very similar chips and just play around a bit with distortion on DAC/AMP stacks. Without distortion, there is no discernable difference between them.

    I was a signal integrity engineer for years, we can cleanly convert signals in the MHz range (>25x faster than audio signals) and process signals in the >5GHz range. Audio is literally child’s play to have near zero noise and 99% perfect analog conversion… Even a product I am working on now where the audio is medically needed to be a certain delay and fidelity to trigger biometric measurement feedback, the DAC chip is extremely cheap compared to “audiophile” gear…

    There is a reason why pretty much everyone fails a blind DAC comparison. If there were double-blind tests performed, probably like <1% of the audiophile population (that is already very low) that has extremely abnormal hearing would be able to tell DACs apart consistently above a fairly low threshold.











  • I don’t really get the idea of decentralized internet.

    The internet is already decentralized. There are millions of websites hosted on thousands of separately-owned machines.

    “Decentralized” services like the fediverse use thus exact same structure and bind them together by a search/aggregation API.

    The “centralized” part of the internet is DNS/IP Assignments, Service providers, and search.

    You are perfectly allowed to go your whole life without using search, or by self-hosting searX.

    If we go back to the age of webrings, that is essentially decentralized internet. It seems like every decentralized internet idea is just a rehash of this with some Tor ideas sprinkled in.

    You are never going to be able to pull a “Silicon Valley” and make every device into a mini server. The ping and uptime would be horrific.



  • Sorry, I think options like Firefly III for that might not be sufficient for small business, but it was the only great Foss personal finance software for a long time.

    Odoo is the gold standard for business. I think they also have a business finance app? It isn’t free, but the cost is reasonable.

    Otherwise, I use Leantime for project management. If you work in a project-based or contract-based company (like consultancy or design house), then it has a lot of project & product features including time tracking with a plugin. Not financial though.


  • Oh boy! Here goes

    Desktop:

    • Bazzite
    • KDE Connect
    • KiCAD
    • FreeCAD
    • Plasma
    • LocalSend
    • Thunderbird
    • Bitwarden
    • Code OSS
    • Krita
    • CoreCTRL
    • LibreOffice
    • CuteCOM
    • KopiaUI
    • Calibre
    • Heroic Games Launcher
    • Lutris
    • PrusaSlicer
    • Okular
    • Inkscape
    • FluffyChat
    • SyncThingy
    • Elisa
    • Haruna
    • Kdenlive
    • YouTube Downloader GUI
    • Paperwork (stille can’t get network scanners working on Bazzite with sane set up)
    • Solar
    • ProtonUp-QT

    Phone:

    • AntennaPod
    • Immich
    • Aegis
    • Heliboard
    • Organic Maps
    • Breezy Weather
    • Aurora Droid
    • K9 mail
    • Signal
    • Fluffy chat
    • Home Assistant
    • Eternity
    • Findroid
    • Gadgetbridge
    • Fitotrack
    • Loop habits
    • Tuta
    • StreetComplete
    • Wireguard
    • Unit converter untimate
    • mastodon
    • ntfy
    • newpipe
    • KDE Connect
    • bitwarden
    • findroid
    • localsend
    • material files

    server:

    • Leantime
    • Bookstack
    • Immich
    • Jellyfin
    • Home Assistant
    • Traefik
    • Crowdsec
    • Authelia
    • Dozzle
    • Glances
    • full *arr suite
    • transmission + wireguard
    • paperless-ngx
    • cloudflare-ddns
    • syncthing
    • valheim server
    • Boinc
    • stash
    • ntfy.sh

    If I donated $5 per month to each of these projects I would be broke 😂