I have done some work with this display and have submitted changes to the Marlin code to support it. However, because of a certain individual's behavior, I am no longer support the changes. If you get the latest code, look for the define ELB_FULL_GRAPHIC_CONTROLLER and enable it. I had the basic display functionality working. But with some of the latest changes, they have broken the contrast control for LCD displays and as a result, the display does not get the contrast set correctly. I had submitted a couple pull requests to fix it, but because I didn't "style" my code correctly, it wasn't accepted. Anyways, I can help you with it if you are interested. I tried to use the same control lines as the GLCD, but had to make some changes. The eagle files are located here [
github.com] and you can see how the pins are assigned.