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A comment on Show HN: Building a 42-inch E-Ink frame for generative art. Parent comment

Re:Show HN: Building a 42-inch E-Ink frame for generative art by solardev on Tuesday October 10, 2023 @07:34PM (#37839143)
Is the refresh really a big power draw vs the backlight or even the pixels themselves? I think the thing about e-ink is that it's a chemical producing/retaining the pigment, rather than a light source. So even when it's off, it retains its current colors. When a LED is off, it's just... nothing.

But you still have a point. Even if a LED display has "only" a 2 or 3 day battery life, that's still pretty huge to mere hours.

How do smart watches (like the Garmins with 1-week batteries) do it?

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Re:Show HN: Building a 42-inch E-Ink frame for generative art by pxeboot on Tuesday October 10, 2023 @10:26PM (#37840212)
The Garmin watches with 1+ week battery life have memory-in-pixel displays. Like E-Ink, this seems like another technology that could be amazing if they were available in larger sizes with lower prices.
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Re:Show HN: Building a 42-inch E-Ink frame for generative art by adql on Wednesday October 11, 2023 @09:58AM (#37844480)
> How do smart watches (like the Garmins with 1-week batteries) do it?

https://sharpdevices.com/memory-lcd/

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