• 0 Posts
  • 16 Comments
Joined 1 year ago
cake
Cake day: June 12th, 2023

help-circle




  • Only partially true. The solar panels almost all inject power back into the grid. Power companies started complaining about their profits when they had to actually pay the users for their power that they generated so now home power generating houses get paid pennies on the dollar for delivering power and reducing the power capacity needed by the power companies and of course the power companies didn’t lower prices at all, so they are just sucking up the difference in pure profit.


  • Depends on what your usecase is for what is “essential.”

    I think keeping household documents, taxes, medical bills, etc… In a local only paperless-ngx instance is quite essential to the organization of a household where everything is searchable and able to be organized on multiple levels compared to a simple document folder on 1 computer.

    Having a document or self-hosted wiki with an in - case - of - death document that gets backed up in an encrypted, but accessible by family place is probably the most “essential” thing.


  • Actually, the AI assistant fad isn’t all bad.

    HomeAssistant has an open souce assistant pipeline that integrates into the most flexible smart home software around. It is completely local and doesn’t rely on the cloud at all. Essentially it could make Alexa’s and google homes (that literally spy on you and send key phrases back to your built data collection profile) obsolete. That is a way not to have to rely on corporate bullshit privacy invasion to have a good smart home.

    Indeed transcribing and translating (and preserving dying languages and being able to re-teach them) are 2 of the best consumer uses for AI. Then there is accelerating disease and climate research.

    If these were the use cases that were pushed instead of fucking conversational assistants, replacements for customer support that only direct to existing incomplete docs, taking away artists’ jobs, and creating 1984 “you can’t trust your own eyes and ears” in real time, then AI would actually be very worthwhile.



  • Here in Belgium there used to be big government subsidies for solar panels 5-10 ago.

    Now the same wattage battery + solar setup without any government subsidies is a good chunk cheaper than that time with the large subsidies.

    Pretty cool and shows the power of government renewables subsidies. A huge percentage of houses in Belgium have solar panels now.(and electricity still costs 0.30€/kWh average because of fossil fuel energy lobbies)

    Now that there is a local industry around it, most renovations and almost all new builds include them.


  • This is a good way to do it.

    I went one smaller with the Node 304 which only can do 4 HDDs with a GPU inserted. Going used for consumer desktop CPU is the most powerful play for the money I think.

    This is a good path forward OP for a pretty powerful server

    • Node 804
    • Used AM4 motherboard ( microatx B550) (can be around 150€)
    • used 5700X or similar (seen as low as 100€)
    • new 500W power supply
    • 32GB DDR4 3200 ram in 16GB sticks
    • WD red plus 10TB helium filled for balance of noise and performance and price. My 10TB drives are as quiet as my 4TB. My scheme is ZFS mirror of 4TB (2 drives) for important docs, and 10TB drives for non critical data. Drives are by far the most expensive unless you get good second hand drives
    • if you want to do Jellyfin media server, pick up an arc A310


  • You said it right there in your comment.

    Sleep mode, (and other effectively off modes) where it is functionally useless, it can do.

    MSP430 can do 140uA/MHz. That is ~7 times the power that this application supplies, and that is not counting any single other chip quiescent current or chip that actively provides useful data. You would have to have a battery anyway or a big cap to provide the needed current for on-states. Or you could run it extremely low frequencies like you said, but those tend to not scale linearly at all with per MHz power ratings. Quiescent currents tend to catch up fast at that scale. I would be extremely doubtful that 150kHz would scale perfectly and wouldn’t have already exponentially decayed to around its lowest possible on-state consumption for the chip. I would definitely have to see tests on that.

    The smallest of batteries like the VARTA tiny cells in TWS’s are infinitely more useful and practical and it would take this application months to fill a single cell, discounting all losses.


  • It is the Mac of network hardware in my corporate - entered experience.

    It is aesthetic hardware, marketing, and everything software related looks polished on the surface, but is buggy (particularly their access which is the worst thing to be buggy) with the least possible configurability, completely obscured debugging resources, and proprietary ways to make you reliant on their support services.

    That being said, I am still using them because I got a 30€ UAP-AC-SHD from my company’s old stock when we switched to Cisco hardware. And their cloud gateway ultra is a good value. My whole house setup with prosumer hardware will be 140€ and where my internet comes in is the worst place in the house to put a wireless router.


  • I don’t think people realize how extremely little 50uW is.

    For a standard 3.3V microcontroller assuming a 95% efficient voltage regulator will be a current of 14.4uA. Just having the HSI master clock enabled on one of the low power STML0 chips is 15uA. This will literally only the clock. That is 0 sensors, 0 communication, 0 IO, nothing useful at all. For reference, reading SPO2 with a very efficient maxm86161 takes 10uA by itself in ultra low power mode with low accuracy and not counting the max leakage current of 1uA. For full operation, you need about 1000x-10000x that amount for short bursts.

    “Oh but it can cHaRgE tHe BaTtErY”

    Let’s say the device has a standard 100mAh battery (apple watch had a 228mAh or more). At 100% efficiency with absolutely not one millijoule being used by any other electronics (which would never ever happen, it would at the very least need a boost converter), it would take around 277 days to charge up that tiny tiny battery.

    Let’s take another example of an even smaller battery. To charge one side of the airpods 3rd gen (0.133Wh battery), it would take 110 days per ear

    This is one of those free “energy harvesting” fad BS based in nothing but wishing and marketing. It is an interesting learning project for wireless antenna beginners, but that is the extent.