Perhaps a stupid question, But I always thought the whole point of e-ink displays was to have non-volatile display, that is, a mostly static display that persists when the power is out. These projects that focus on driving them at high speed, Is there any actual advantage in using e-ink tech at that point?
Is also "reflective" (natural) vs "emitting" (a compromise idea that worked but should not have you take it for granted - we do not "read fire" in nature).
It's a niche use, but if backlit screens trigger migraines (as they do for mine), then high-speed e-ink is almost a pre-requisite for using traditional interactive UI. At ~15fps typing is OK but using a mouse cursor sucks. Outdoor use is a bonus. RLCD is another option.
In the video is explained that the reason to build this project was a faster response time. I would love a quicker response time on my ereader. The emulator is just a demo. He explains at the start and end of the video he is building a project with fairly static screens. It sounds like a project where using epaper makes sense.
Reading a book on e-paper in daylight is so much nicer than on a phone, for example.
Is also "reflective" (natural) vs "emitting" (a compromise idea that worked but should not have you take it for granted - we do not "read fire" in nature).