MrLeeh

I update the display every 5 minutes. The refresh takes approx. 2 seconds. The 3 colors display takes much longer than the black/white display. That is why I decided for the black/white display. I didn't discover a way to refresh only a part of the frame. This would indeed be a great improvement. Let me know if you find out about it.

Thanks for your kind comment. Happy you like it. Having one Raspberry doesn't keep you from getting another one, though :)

Refreshing the screen every couple of minutes should be fine. I'm refreshing every 5 minutes. No problems so far. Only the typical: screen goes black and white before refreshing. But at the beginning it didn't work at all. I had to double-check the connection cable to make it work. Does you pattern disappear after the refresh?

Honestly, I didn' t worry about the flat cable too much. If you bend it carefully it is fine. Just make sure not to bend it around hard edges.

Yes you can. But sometimes you don' t have one. E.g. when using as mediabox.