Hi Lukas,
Waveshare 12.48inch, black white 1304×984
This display would be nice and it seems, it is also supported by your library. But how can i use this display without using this large blue board where my Lolin D32 will not fit. Yes, i can probably use some jumper-cables.
Yes, the b/w version is supported by GxEPD2. I don't know what you mean by the "large blue board".
The ESP32 socket is for a e-Paper ESP32 Driver Board. The Lolin D32 has a different pinout.
I have some ESP32 boards with matching pinout, one is marked "ESP-32S" on the backside. I think these are known as ESP32 DevKit.
There is a connector and cable for connection of any processor board with SPI. I think it is on the 5V side of the level converters, but should also work with 3.3V processors. Use a voltage divider on the BUSY line, or at least a series resistor.
See also: Black and White ePaper,Monochrome E Ink_Good Display
Note that this panel is End Of Life.
You could use the bare panel with this Connection board adapter HAT connect for 12.48 inch e-ink display module DESPI-C1248 (hard to find, is on their older web-site).
Can also be found here: Demo Kit.
Waveshare 10.3inch, black white 1872×1404
This display has an SPI Interface but the operating voltage is 5V. Would it be potentially compatible with an ESP32? Do we need to use this IT8951 Controller?
Yes, you need the IT8951 controller board, and it needs to be the (parameterized) version for that display. The panel has parallel interface. Support could be added to GxEPD2, if I have the panel with controller.
Waveshare 9.7inch, black-white 1200x825
This display has an SPI Interface but the operating voltage is 5V. Would it be potentially compatible with an ESP32? Do we need to use this IT8951 Controller?
Yes, same answer.
Did you notice this large size 11.6 inch epaper screen module SPI resolution 960x640, GDEH116T91?
Jean-Marc