Well, this is, for sure, a very interesting project.
However, there are only so many hours in a day and there are so many other cool projects as well...

On the technical side, so far, nearly all e-paper displays I found use SPI. iirc, I found none using i2c.
So, if someone has any pointers on e-paper displays with integrated i2c support, that'd be great.
Also, it seems like that the VCC may be a problem as well as we only have 3.3V out of the box and some displays require different voltages; some even require a set of different voltages.

Any further input is highly appreciated.

Edit:
This is likely OT in here but I just found the following display:
http://www.lcd-module.de/fileadmin/e...ogxl240-7e.pdf
This might fit better in the OLED thread.