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We are now Solar Powered

andrewjvpowell.com

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Re: We are now Solar Powered

#61

Post by easton »

rstuart4133 wrote: post #57
amanzi wrote: post #48

Earlier quoted context omitted.

The "port blocking" may just be a symptom of how the modem connects to the internet, rather than being a malicious act by the ISP. CGNAT is becoming a common way for ISPs to connect consumers to the internet, even here in NZ many ISPs use this. It basically puts a bunch of consumers behind the same NAT interface meaning that port-forwarding no longer works.

He's an Australian, and so am I. His ISP (Optus) doesn't go out their way to block ports. However, he says he's using a AC800s 4G/LTE modem and backs that up by saying is using mobile data. The default mobile data service from all telco's will use CGNAT and will hand him some 10.0.0.0 address. I presume that's because mobile phones don't run servers as a rule, so no one notices and it saves them a bit of money. They…

I seem to recall hearing somewhere on HN that some ISPs even turn CGNAT on for IPv6 connections (in fact, I'm pretty sure AT&T's LTE has it). I have no idea why, other than people being so used to packets not routing to their local box that they've disabled their firewalls.

The people who made that decision probably went to the same school that told network admins to disable IPv6 on VPN connections.

Re: We are now Solar Powered

#63

Post by shadowfaxRodeo »

painchoc wrote: post #15
dvh wrote: post #11

Earlier quoted context omitted.

Because of dithering, that photo is 50kB, jpeg could easily have the same size and look much better.

Exactly. Dithering creates a lot of noise and PNG is poor choice to compress that.

it's the opposite way round. png is especially good at compressing dithered images.

It's a reduced color palette, (in this case just black and white) so there's lots of repeated sequences. Which works very well with lossless compression.

Re: We are now Solar Powered

#64

Post by lucb1e »

Johnythree wrote: post #59
lucb1e wrote: post #56

Earlier quoted context omitted.

Wait, but it already physically moves to track the satellite. Sorry for the stupid question but what is this digital tracking still for? Sending it to within a degree or so is not close enough?

> Wait, but it already physically moves to track the satellite It doesn't. It moves to be in the same plane as the satellite, but it doesn't actually track the satellite. The phased array can only track a single line across the sky. The dish moves so that line is parallel with the satellites orbit.

Ah, so if I understand it correctly they (motor and phase array) basically each do one axis?

Re: We are now Solar Powered

#65

Post by eldersnake »

louwrentius wrote: post #32
atvatar12 wrote: post #5

A webpage, hosted on a Raspberry Pie, still reachable after mentioned on HN #4. Quite impressive, why do we need CDN again?

My own blog - running on a solar-powered Raspberry Pi 3b+ was also hugged by HN, but it didn't even sweat. [0] [0]: https://louwrentius.com/this-blog-is-now-running-on-solar-po...

Nice! I'm amazed I haven't seen your blog before, and you've done a much better job than I did overall. (I'm the author of the article btw) I will have to take some notes...

Re: We are now Solar Powered

#66

Post by PaulDavisThe1st »

Scoundreller wrote: post #60
PaulDavisThe1st wrote: post #50

Earlier quoted context omitted.

> If there's one thing you can do to save energy, it's probably to dry your clothes on a rack outside Here in NM, you can take a load of athletic gear laundry outside to hang up and by the time you're done hanging it, the first items are already dry :) In winter, it takes about twice as long, indoors. So .. yeah.

Dry it inside in summer for the free cooling.

24" of adobe takes care of that here, thank you very much. But yes, for people stuck with homes with climactically inappropriate construction, maybe. OTOH, adding humidity to the inside of your SE USA home in the summer may not seem so attractive.

Re: We are now Solar Powered

#67

Post by PaulDavisThe1st »

henrygrew wrote: post #53
PaulDavisThe1st wrote: post #33

Not directly related to solar-powered-servers, but rather power-involved-in-computing ... I have a solar powered van (not the engine, alas), and it has been amazing to understand how a day of my kind of computing (edit/compile/debug cycle with C++) uses more power than the 12VDC refridgerator in the van. The computer is a small custom built direct-to-12VDC miniITX with an i5 processor. The refridgerator literally has…

Interested in the custom computer build, care to share some details?

It's a bit old at this point (I'm not working mobile as much as I used to, and tend to use a laptop more often than I used to when on the road).

Anyway, some details and photos back from when I built it (actually I built two, and am using the 2nd one now, after the builtin video on the first died and no more mobos were available)

Also, I seemed to have lied. It was based on an i3. I'm fairly sure you can get mobos in miniITX format for at least i5 and probably i7 at this point.

https://sprinter-source.com/forums/index.php?threads/30991/#...

Some shots showing my van working setup:

https://sprinter-source.com/forums/index.php?threads/30991/p...

Also, turned out that I needed a voltage regulator between my solar DC system and the computer. The picoPSU can only handle up to 14V, but the solar system can sometimes run the voltage at 14.4V, which will shutdown the computer. Such a thing as too much sunshine! :)

Re: We are now Solar Powered

#68

Post by eldersnake »

BiteCode_dev wrote: post #7

From the site: > I'm fairly familiar with CSS3 and all the new whizz bang CSS things that I could very well use to make this fancy looking, but I decided to go the simplest route. [...] Also it's basically mobile responsive out of the box. But then I notice some column layout : https://www.andrewjvpowell.com/#about How is that responsive? Well, "inpect" reveals flexbox, which is very much modern css. Still minimalist…

You're not wrong, but my intention was not so much about not using _any_ CSS3, but more about keeping a basic design that degrades gracefully. Which it does, if you view it in a terminal browser it works totally fine.

Re: We are now Solar Powered

#69

Post by Sophistifunk »

shadowfaxRodeo wrote: post #63
painchoc wrote: post #15

Earlier quoted context omitted.

Exactly. Dithering creates a lot of noise and PNG is poor choice to compress that.

it's the opposite way round. png is especially good at compressing dithered images. It's a reduced color palette, (in this case just black and white) so there's lots of repeated sequences. Which works very well with lossless compression.

And yet, a 50kb JPG would look much better.
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