[vanderZwan]

That's cool, but:

> It takes approximately 40 seconds to refresh this display

I think that would rule it out for the purpose of this project - the demo in their introduction video[0] shows that it flashes multiple colors for ages during this long refresh. I imagine that could be very confusing for someone whose short-term memory might not last that long.

[0] https://www.youtube.com/watch?v=TluopgSoSWY&t=500s

[oakesm9]

The colour screen have a much slower refresh than the others. The greyscale one I have takes less than a second with minimal flashing.

[vanderZwan]

Yeah, a black and white version would probably have been fine. Somewhat frustratingly they don't seem to have a 7 inch greyscale one though, only colour versions! Maybe they used to but stopped selling them?

EDIT: posted this before I noticed harpastrum's comment