I have read several things about the "Color 24-Bit LCD 4.3" PSP 480x272" from sparkfun not really compatible with the Arduino but was wondering if there was a easy solution? Could you have a "control" board that sends information to and from Arduino?
My thought is to use one of these displays that I happen to have and either display a website or setup some kind of interface. Maybe preset images with string data from Arduino like temp and such. Maybe I have to use an other low cost solution currently have a 16x2 LCD and have it scrolling the information prototyped but wanted a better display.
By the way my knowledge is quite limited and this is probably above my skill level but live and learn.
Will a KS0108 based display not work for your application? Standard resolution is 128x64 dots, though the chipset supports more, and I believe there are some displays that are set up to use multiple driver ICs to increase the resolution (at least, I think I recall seeing this either as an actual display, or in the datasheet for the KS0108).
The only thing you'd otherwise have to live with (other than the lower resolution) is lack of color (but if you are contemplating the 16x2 LCD, then at least its better than a character display, insofar as what you can show on-screen).
Just wanted to let you know that if you do some googling - you can find information on those larger KS0108 displays (and some Arduino code on using them). Also, I found this displayed offered by Sparkfun (not cheap, though - but maybe you can find the same/similar display elsewhere?):
The 4D displays can also work standalone and they have their own IDE if you go this route. They have what they call a Graphics Driver on board (Goldelox or Picasso). These appear to simply be some sort of uController that is handling all of the hard part of writing to a GLCD. One of the confusing aspects of 4D is that all of their boards can be used as either serial (SGC) or standalone (GFX). The hardware is identical you just have to upload the approriate firmware.
I have both a 1.44" and a 2.8" and I can't wait to get my hands on the new 4" with capacitive touch!
but live and learn.