That’s if the voltage supply was stable and within electrical specs for a sufficient period of time. We can see this is a snippet 2 hours into the discontinous collection.
3.6V is the maximum value that the nrf52832 SoC can handle. I would suspect the VDD is variable.
I'm a noob when it comes to DBs, but stumbled upon using InfluxDB with Home Assistant - would you say that's a solid choice, or are there better alternatives out there?
InfluxDB is pretty much the most popular and widely used time series database.
The difference between just storing every value ever and a time series DB is that the latter one can reduce the data frequency when it gets older.
Like if you're measuring your fridge temperature, you might store it every minute. But do you care about 1 minute accuracy when the data is two years old? Would 5 or 15 minutes be enough?
This is what time series DBs do automatically.
They're also optimised for data that's formatted as <time stamp> - <values>, making inserts and queries fast for data like that.
Unfortunately DIY is limited to what is certified in France, Victron MultiPlus are certified all, Quattro so far are not, the sole battery from this shop allowed for a grid-connected system are the Pylontech. Still MUCH cheaper than what I've found from French shops anyway so a big thanks :-)
Yeah I think if you want to order from CATL directly, your chances for a reply are better if your order is worth some billions :-)
EVE cells are very famous in the DIY scene, you can get them via Alibaba/Aliexpress, or if you're in Europe from nkon.nl, they have a very good reputation.
"Solar energy is the most abundant energy resource on earth -- 173,000 terawatts of solar energy strikes the Earth continuously. That's more than 10,000 times the world's total energy use."
source: https://www.energy.gov/articles/top-6-things-you-didnt-know-...
I'd say we don't run out of renewable energy in the near future, we just have to collect more of it.
During cloudy winters in higher latitudes? During rainy season in lower latitudes?
Do you know that wind often goes to zero across Europe for days at end in Europe in Winter? Last winter that was the case for nearly 2 weeks. How much would battery storage cost to cover for that?
I'm pro nuclear but I refuse to accept pro-nuclear arguments when they don't match the problem at hand.
When you are talking about more nuclear, you are thinking almost decade from now.
If you get permission for a new nuclear reactor today, it starts to produce energy 6 to 8 years from now. It could be possible 3 to 5 years in the ideal conditions that never happen.
> If you get permission for a new nuclear reactor today, it starts to produce energy 6 to 8 years from now. It could be possible 3 to 5 years in the ideal conditions that never happen.
Starting producing energy is one thing, on top of that is the breaking point where it becomes economically viable to pay off the construction costs of those plants. For that we are looking into a 20-30 years timeframe when the plant starts to generate money back.
As much as I like the idea of nuclear power it just becomes less and less economically viable when renewables get cheaper. The only ways to build and run nuclear plants is through government funding or by keeping energy prices at a higher level to pay back the construction costs.
On top of it all you also depend on having trustworthy and stable governments to keep those plants operating safely for the 50-70 years period they should be running.
While they can't provide a baseload I agree, renewables can't provide the same steady output that nuclear can. I think it's sensible to consider solutions to this problem (like we see with many different ways being researched on how to store excess production) rather than believing nuclear still has a chance in the current landscape.
Like I mentioned, I do like the idea of nuclear power but it has many issues with construction costs, source of materials, safety, etc. aspects of it which mean many countries would be excluded from running reactors.
Technology for transforming/storing excess renewables' energy which in turn can then provide a baseload output are much more accessible to the rest of the world, and I believe it has a potentially much bigger impact fighting the climate crisis than nuclear can provide us in the next 20-30 years.
That's what is happening. People are jumping into conclusions that there is not enough energy to run those data centers. There absolutely is. It has been planned.
The video footage of suicide drones you can find on r/combatfootage is nearly always from custom drones, the giveaway is the analog video transmission. As the poster before said, DJI drones are only used for reconnaisance (for example DJI Matrice), where high-quality digital video transmission (and thermal image cameras) are very useful.
Huh, interesting, I always think of the Macbooks from the 2007-2011 era to be the best in terms of hardware regarding the reliability - if you look up the major Macbook recalls and problems, they all begin after that time, for example the dying graphics problems, faulty logic boards, delaminating retina screens, faulty SSDs and so on...
Still using a mid-2012 MBP as my second machine here too. It's a great machine if you upgrade it to 16GB RAM (which it can take despite Apple's official claims) and an SSD. And unlike modern Macs, those are easy upgrades / repairs that you can do yourself. I actually just bought another mid-2012 MBP on eBay, as a backup in case this one dies, and as a dedicated Linux / elementary OS machine until then.
Also, the mid-2012 has the best trackpad, ever. A proper, satisfying mechanical click when you press it. I just can't use those haptic trackpads Apple put on every laptop from 2015 onwards.
The mid-2012 MBPs have very unreliable SATA flex cables though, so make sure you keep some spare flex-cables on hand. I had six of them replaced by Apple during the 3 year warranty period. (That unreliability is what made me switch back to Windows & use a Thinkpad X1 as my daily driver, but I'm keeping the Mac alive with my own repairs after Apple refused.)
I upgraded to 16GB RAM and put a 1TB SATA3 SSD in it too. Never had an issue with the SATA flex cables myself, so I must have been lucky.
The trackpad took some tinkering on Linux but I got it to behave like a Mac with three-finger drag. Didn't need rotate or any other gestures but I had got used to three-finger drag and 2 finger right-click.
It's my daily driver. Amazing to think it started out running Snow Leopard. Great piece of hardware.
Even the CD drive on it has been useful for ripping my entire 1000 CDs of yesteryear and then using sacad and kid3 to apply artwork to the MP3s, then host on Navidrome on a Pi4 at home with Wireguard VPN access so I can stream all my music on my phone using Subsonic whilst out and about. Really happy with the setup and the machine.
Meanwhile my work 2016 Macbook's keyboard is playing up again after it was replaced (£900 worth, replaced free by Apple thanks).... Replacement includes the entire top panel and touchbar (which was defective too) and also a new battery...
Well it depends where you live, if you happen to live in Germany (I guess they ship to the EU as well), there are quite a few on stock right now at BerryBase, according to rpilocator.com
