Background: For a number of years, we've been putting 2x8 character LCDs on "little" controllers. Typical is Hantronix http://www.mouser.com/ProductDet... at $4-$6 depending on volume. Module size about 60mm x 40mm; display area about 28mm x 12mm.
Then typical UI adds four push buttons MENU/SET/UP/DOWN. Say another $1 for that.
Let's say I want to get into a new decade and use a small graphics LCD instead. Perhaps with a simple touch screen also, to replace the UI buttons?
I've done a few T6963 graphics display apps before, but can I get small 128x64 or 128x128 or similar graphics LCDs at that ~$5 price point? Not surplus one-time buy; need to be able to re-buy.
But they are COG yet have a serial interface. I'm lost there--is there a controller on board then? Can someone point me to a primer on this?
Will a special connector add to the BOM significantly?