I don't pretend to understand the thermodynamics of all of this to do an actual calculation, but note that the ISS spends half its time in the shadow of the earth, which these satellites would not do.
The earth is actually a pretty big heat source in space. Solar radiation is a point source, so you can orient parallel to the rays and avoid it. The earth takes up about half the sky and is unavoidable. The earth also radiates infrared, the same as your radiators, so you can't reflect it. Solar light is in the visible spectrum so you can paint your radiators to be reflective in visible wavelengths but emissive in infrared.
Low satellites are still cooler in the Earth's shadow than they would be in unshadowed orbits, but higher orbits are cooler than either. Not where you'd want to put millions of datacenters though.
You would put these in polar orbits so they are always facing the Sun. Basically the longitude would follow the Sun (or the terminator line, whichever you prefer), and the latitude would oscillate from 90°N to 90°S and back every 24 hours.
No. Otherwise how would you power them? We could use nuclear power methods, like we did in the Voyagers for instance. But the press release doesn’t mention that and, for a constellation of satellites around the earth, it would be a terrible idea.
> GNU Unifont is part of the GNU Project. This page contains the latest release of GNU Unifont, with glyphs for every printable code point in the Unicode Basic Multilingual Plane (BMP)
Still doesn't exactly say what it is? I get that it's glyphs for printable characters, but honestly it could be a PDF, video, collection of PNGs or SVG files, an Adobe Illustrator file, a linux distribution, a web browser, or pretty much any other piece of software or data format. I presume it's a TTF or OTF font file?
no.
as others have stated too, the following should be mentioned
- what's the 2 meaning in BMP
- it's designed as a monospaced (or proportional?) bitmap font
- designed in a single 16x16 size only (or also 8x16? it's a bit unclear)
- provided as an OTF/TTF font format, which can be scaled by most font rendering engines to other sizes, but u need antialiasing to make it look smooth (this is mentioned, but under the download section only)
- use as a "last resort" default font, according to wikipedia at least
I've been toying with a variant of this project for my Honeywell home air filters. I have one in all my "big" rooms, and I like to keep them running at a low speed most of the day.
But I also have time-of-day energy pricing, and it would be nice to automatically turn off (or at least slow) my air filters during the 5pm-8pm window. This project inspires me to at least look into the feasibility of adding that functionality myself.
Depending on your air filter you might be able to just use a smart plug, I went down a similar route this summer before realizing that mine would remember their power state and settings when powered off.
So now I just have them plugged into a few smart plugs with automations in homeassistant
I would need a device with a physical switch rather than a touch control. Sadly many devices, mine included, have "power was cycled = device is off" logic.
It's been working so well I was actually surprised one night when the dehumidifier in the bedroom turned itself on from the automation (which I have set to do after dark if humidity is higher then 70%).
It had been within tolerance for ages and I just hadn't had to even think about it.
You should, it is very DIYable! I did it and reverse engineered it myself a while back. You dont need to make a custom circuit board if you are fine with losing the touch controls
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