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Is there a Pi that can be made to drive a 8k monochrome LCD over HDMI? Not for video just for stills, basically a very similar use-case to an SLA 3D printer. There do seem to be some people doing it but I'm not exactly sure how (definitely not a linux person).
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Apr 1, 2024 09:21
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| # ¿ May 10, 2024 14:06 |
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Computer viking posted:It doesn't look like HDMI supports any real grayscale or bitmap color modes. If it's bitmap, you could get away with YUV 4:2:0; the absolutely lowest bandwidth 8k standard is 8k 30Hz 4:2:0 at just under 18Gbit. Also, it looks like the 8k modes were added in HDMI 2.1, so that's presumably a minimum. Ahhh ok I just looked at the NanoDLP slicer page and they do give the caveat that it's only capable of 4k on raspberry pi's but in a Facebook post from a while ago they said they had a pi 4 running 8k? Orange pi seems to support 8k natively over HDMI 2.1 so I suppose that's a better bet.
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Apr 1, 2024 10:45
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Computer viking posted:It doesn't look like HDMI supports any real grayscale or bitmap color modes. If it's bitmap, you could get away with YUV 4:2:0; the absolutely lowest bandwidth 8k standard is 8k 30Hz 4:2:0 at just under 18Gbit. Also, it looks like the 8k modes were added in HDMI 2.1, so that's presumably a minimum. Oh hey so I found out how these printers drive 8-12k screens over HMDI 2.0, turns out that they map each of the R,G and B values to a different physical monochrome pixel, so the screen is effectively pretending to be a lower resolution RGB screen and you have to send it funny coloured images if you want them to display correctly.
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Apr 2, 2024 07:25
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