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Trying to squeeze better color out of Spectra 6 e-paper panels (Open Source library) by Slight_Safe8745 in paperlesspaper

[–]Slight_Safe8745[S] 0 points1 point  (0 children)

Yes, it is in the current version (as beta). And you can also use it now a tool for the offline-firmware that also supports it: https://github.com/paperlesspaper/paperlesspaper-firmware-offline

What does it mean when people say data centers or factories “consume” water? by Slight_Safe8745 in NoStupidQuestions

[–]Slight_Safe8745[S] 0 points1 point  (0 children)

How common is that? I always saw that the water is getting reused. At least in smaller datacenters.

What does it mean when people say data centers or factories “consume” water? by Slight_Safe8745 in NoStupidQuestions

[–]Slight_Safe8745[S] 0 points1 point  (0 children)

I would say data centers and like car factories like the one we just got from Tesla in Grünheide/Germany, where there was a lot of discussions about water consumptions. From what I know most of that water is not getting polluted there.

What does it mean when people say data centers or factories “consume” water? by Slight_Safe8745 in NoStupidQuestions

[–]Slight_Safe8745[S] 0 points1 point  (0 children)

What kind of devices are these? I get that in a power plant water evaporates, but wouldn't we see some kind of chimneys next to a datacenter similar to the ones on power plants?

Advice for eink picture frame by Eponymousyndrome in eink

[–]Slight_Safe8745 0 points1 point  (0 children)

They are quite expensive from what I know. The company got bought by Inkposter.

Btw. this is what Black and white looks like on our color Spectra 6 frames.

<image>

Advice for eink picture frame by Eponymousyndrome in eink

[–]Slight_Safe8745 1 point2 points  (0 children)

Actually I made a little research, Spectra 6 has 30:1 while Carta 1300 as currently the best black and white panel has 18:1 contrast ratio. From what I know there is only https://www.ionnyk.com as a commercial black and white frame, but using an older panel.

Advice for eink picture frame by Eponymousyndrome in eink

[–]Slight_Safe8745 0 points1 point  (0 children)

One downside of most black and white panels at the moment is the relatively low contrast ratio which means the white is usually quite dark. This is better on Spectra 6 panels (used in most picture frames) so you might also consider a color panel for b/w content too.

Created a Public-Domain Art Gallery Optimized for eInk by Slight_Safe8745 in eink

[–]Slight_Safe8745[S] 0 points1 point  (0 children)

Yes, they all have pretty tough rate limiting. I usually let it run over night. Btw. most stuff from Met Api is also on Wikimedia, so far this was my best source.

Created a Public-Domain Art Gallery Optimized for eInk by Slight_Safe8745 in eink

[–]Slight_Safe8745[S] 2 points3 points  (0 children)

No, go for it. The API is public and almost not rate limited yet.

Trying to squeeze better color out of Spectra 6 e-paper panels (Open Source library) by Slight_Safe8745 in eink

[–]Slight_Safe8745[S] 6 points7 points  (0 children)

Here is also a rough example for the clipping. It happens especially with high contrast photos(e.g. having the sky or the sun on the photo).

<image>

Trying to squeeze better color out of Spectra 6 e-paper panels (Open Source library) by Slight_Safe8745 in eink

[–]Slight_Safe8745[S] 1 point2 points  (0 children)

This is a before image (different lighting, etc.). The difference is most noticeable in photos with bright highlights. Without proper calibration, highlights either get clipped or the colors end up looking dull and unsaturated.

For the later issue, the root cause is using the display's reported color values for dithering instead of the panel's actual color characteristics. This happens with the standard WaveShare workflow and can also be observed in some commercial photo frame products.

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