pedrocr

35 ms·

361.
by pedrocr 6y ago
What I have yet to see a source is on how many hydro resources we have that can help with this mix, particularly those that can be used as pumped storage. Cold, windless days in winter are the worst case scenario for wind+solar on the grid
362.
by pedrocr 6y ago
I have the same worry when using cruise control. What I've trained myself to do is to cover the accelerator pedal when overtaking other cars or in any situation where I might have to brake. That way the car is still maintaining speed f
363.
by pedrocr 6y ago
I just installed 20.04.1 on a 4750U Lenovo T14s and everything just works as far as I can tell.
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by pedrocr 6y ago
Because these companies want their specific employees to vaccinate. They're not trying to increase the total vaccination amount.
365.
by pedrocr 6y ago
The virus is so contagious and so poorly contained in most places that those that do not vaccinate will gain immunity by just contracting the disease instead. Current estimates are of herd immunity by summer with half from vaccination and h
366.
by pedrocr 6y ago
This is a common objection by people that haven't lived with an EV. In reality convenient very slow charging is what you really want. Cars spend 90%+ of their time parked. Connecting them to a common outlet at those times is more than
367.
by pedrocr 6y ago
Are powerful editors really that much of a force multiplier? My career path has pulled me from a CS degree into loosely related fields so I mostly only code as a hobby. I end up using basic editors (e.g., gedit) and reaching for grep/s
368.
by pedrocr 6y ago
Maybe they skipped 7nm and are going straight to 5nm for RDNA2 in CPUs. Zen4 based mobile chips will probably be a very interesting release.
369.
by pedrocr 6y ago
Back of the envelope tells me you can power the whole world's current energy needs, not just electricity, with an area that's 3/4 of Texas: https://docs.google.com/spreadsheets/d/1B3Vtm-bk8NIntYc8mZR
370.
by pedrocr 6y ago
That's the extra hardware I mentioned. I guess I wish the RPi just included one of those chips and had say 4 to 8 pins for ADC. It would make things simpler versus having to find something already well integrated or building it.
371.
by pedrocr 6y ago
I don't really want audio. What I'm looking for is to read 3.3V or 5V analog levels, with really low frequency, once a second or less would be fine.
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by pedrocr 6y ago
Makes sense. Just another digital bus. Bummer. https://en.wikipedia.org/wiki/I%C2%B2S
373.
by pedrocr 6y ago
> All GPIOs can be configured to different functions including but not limited to SDIO, Audio, SPI, I2C, UART and PWM Does supporting audio mean that these GPIOs can be used as analog-to-digital converters? There are home automation appl
374.
by pedrocr 6y ago
It would be a potentially smart move by Apple to allow installing other OSs in iOS hardware. The market share grab part of this segment is mostly gone so they probably wouldn't lose much and it would help with their arguments about the
375.
by pedrocr 6y ago
> They do have e2e encrypted secret chat on day one I was specifically replying to your complaint that non-E2E encrypted chats should not be called unencrypted because they had encryption in transit to the server. You're now shiftin
376.
by pedrocr 6y ago
Do you really consider an "encrypted conversation" if you just do TLS to a central server that has everything in plaintext? Is Facebook Messaging encrypted messaging? Because that's the kind of thing we already had before thi
377.
by pedrocr 6y ago
My Signal message history goes back further than that but maybe the feature was added midway before I switched phones.
378.
by pedrocr 6y ago
You can get the same convenience with the Signal/Whatsapp E2E type of app. All you need additionally is to keep a passphrase stored somewhere. As long as you do that you can have automatic backups that allow you to setup a new device w
379.
by pedrocr 6y ago
That's an iOS specific new feature. Signal has had backups for a long time now.
380.
by pedrocr 6y ago
The backup feature is not new.
381.
by pedrocr 6y ago
That page starts by claiming that Signal doesn't do backups which is false.
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by pedrocr 6y ago
> Please don't complain that a submission is inappropriate. If a story is spam or off-topic, flag it. Don't feed egregious comments by replying; flag them instead. If you flag, please don't also comment that you did.
383.
by pedrocr 6y ago
Just installed Enphase micro-inverters per panel. They just plug into the grid 230V directly with no other hardware in between.
384.
by pedrocr 6y ago
Efficiency is still good for air source heat pumps IIRC. They only go down to 100% at well below freezing which is probably not a problem in Hawaii. Ground source only requires a small hole though, of the kind that is done for water. I&#x27
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by pedrocr 6y ago
Heat pumps are at the 400% efficiency level so by your numbers they're already ahead. And PV has other advantages. It's easier to install since it doesn't require specific tubing and the panels are much lighter. The energy is
386.
by pedrocr 6y ago
That paragraph continues with: "(That said, their losses might also be much higher. That $34 million comes only from “certain” transactions, which might be the tip of the iceberg that the SEC possessed the ability to measure.)"
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by pedrocr 6y ago
What was wrong with the modelling though? Even after all we know now leaving the epidemic unchecked would easily triple our yearly mortality. Based on what we know now we'd still do lockdowns. Probably more severe and shorter ones soon
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by pedrocr 6y ago
Look at HP Microservers. They're a nice package and get you ECC too. At least some NAS models can have a normal Linux distro installed as well. And if you're homebrewing a small ITX case will probably be great too. AMD has some pa
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by pedrocr 6y ago
Building out the grid will help out a lot. Put those solar panels in Portugal and Spain and the difference between winter and summer is much less. I ran some numbers recently for Portugal's grid and was surprised to find out that with
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by pedrocr 6y ago
A better perspective is how much of the energy we already get that we're using. Some quick math tells me that to get 10x our current total energy usage in solar panels would only take 1% of the total surface of the earth, 3.4% of the l

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