[HN Gopher] This website is solar powered and running on a Raspb...
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This website is solar powered and running on a Raspberry Pi-like
computer
Author : zachlatta
Score : 43 points
Date : 2023-04-14 20:13 UTC (2 hours ago)
(HTM) web link (solar.leo32345.com)
(TXT) w3m dump (solar.leo32345.com)
| pearjuice wrote:
| I wonder if putting extensive load on the server could drain the
| battery in enough time before the sun comes up?
| jovial_cavalier wrote:
| I think we will soon find out.
| m4jor wrote:
| The Stats page has a Battery metric on it. Currently sitting at
| 82%.
|
| It has a "144 watt-hour battery" which looks like thats about
| 38,918.92mAh.
|
| Certainly would take a lot it seems to drain it to 0% before
| the sun came up.
| satoshiiii wrote:
| > Certainly would take a lot it seems to drain it to 0%
| before the sun came up.
|
| It depends.
|
| Different types of batteries have different recommended
| levels of discharge. Acid batteries should not be discharged
| more than 50%, while lithium batteries can be discharged up
| to 80-90%. The Blue Ion 2.0 lithium battery is the best one
| available, as it can be discharged up to 100%.
| tppiotrowski wrote:
| The extreme power consumption of a RaspberryPI 4 is about 7W
| [1]. The battery is 144Wh. If battery can discharge 100% that's
| about 20 hours and about 10 hours for 50% discharge. This all
| assumes the CPU is pegged at 100% and it's not an older model
| which consumes less power.
|
| I guess it could be possible.
|
| [1] - https://www.pidramble.com/wiki/benchmarks/power-
| consumption
| username234 wrote:
| is this website running on a little computer next to solar panels
| or is it running in a neiborhood powered with solar panels how is
| this all set up?
| amistad732 wrote:
| aaaaand it's down
| bwestergard wrote:
| Love this aesthetic.
|
| I suppose this dithering would decrease PNG file size somewhat,
| because it would increase the number of repeated pixel
| subsequences, improving the efficacy of the Huffman coding. But
| has anyone actually done an analysis of how much?
| alacritas0 wrote:
| dithering improves efficiency because it reduces the bit depth
| themodelplumber wrote:
| I enjoy looking at dithered images like they are using. It's too
| bad the lovely dithering turns into periodic-looking patterns
| when scaled down per the 60vh-width directive in the css.
| Waterluvian wrote:
| Like a moire effect?
| readthenotes1 wrote:
| Potato computer was cooler
|
| Heh
| schemescape wrote:
| I love the concept, but I'm extremely skeptical that the dithered
| PNG images are smaller than a (much nicer looking, but lossy)
| JPEG. It's fine if that's the aesthetic they're going for, but it
| doesn't seem like it would reduce the server load...
|
| For the record, one of the 640x480 PNGs is 41 KB, and I just
| saved an elaborate, full-color (and higher resolution) JPEG at a
| smaller file size (quality was around 50, I think). The JPEG
| looks completely fine on my (normal DPI) screen.
|
| Edit: It _does_ look like they scale up the PNGs (at least when I
| view their site), and lossless images definitely scale better.
| Maybe that was the motivation.
| pengaru wrote:
| > While we are in the process of adding more content to this
| site, we are proud to be home to the world's first
| environmentally friendly rickroll.
|
| Imagine thinking your pile of consumer electronics dedicated to
| serving a single frivolous web site is something environmentally
| friendly...
| deadbunny wrote:
| Imagine being this fun at parties.
| pengaru wrote:
| > Imagine being this fun at parties.
|
| It's pretty unusual for a party to fly an environmentally-
| friendly banner overhead, though it's not something I'd put
| past the Burning Man crowd.
|
| I do like that you went there however, because partying and
| consumerism overlap substantially. And TFA amounts to green-
| washed consumerism.
|
| This is coming from someone who has spent entire days working
| from beaches powered by a portable solar panel. It was
| certainly a celebration of how far solar panels had
| progressed that the ting could power my thinkpad all day. But
| it would have been asinine and dishonest for me to portray it
| as environmentally-friendly. I just added more e-waste to the
| existing plentiful powered outlets everywhere situation,
| because I wanted to be at the beach and play with a solar
| panel.
| username234 wrote:
| [flagged]
| username234 wrote:
| floating io has a point i agree with him
| batmansmom1 wrote:
| Wonder how its connected to internet
| username234 wrote:
| i wonder where this is hosted
| wang_li wrote:
| Somewhere in Arizona or on an Indian reservation as they are in
| Mountain time but they don't observe daylight savings.
| username234 wrote:
| imagine the computer is abouta die
| [deleted]
| floating-io wrote:
| Things like this actually bother me. They make it seem like the
| only way to be energy efficient is to give up all amenities,
| including aesthetics.
|
| This is not the way to promote energy efficiency IMO.
| dgoodell wrote:
| I don't thinks this page is ugly at all.
|
| What more important to me is that it loads quickly.
| thejarren wrote:
| Seems deeply inspired by https://solar.lowtechmagazine.com/
|
| - Yes they mention it on their website. Love LowTechMagazine.
|
| I've been meaning to try this out sometime. It'd be a fun side
| project.
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(page generated 2023-04-14 23:00 UTC)