buton wrote:yes too much ram
i saw you wrote a library for only characters.. could you share it?
This isn't ringing a bell. Maybe it was someone else's library?
Also, while this would reduce program size (flash memory), this wouldn't do anything to help with RAM usage. Are you using the 128x32 or 128x64 display? The latter especially uses a ton of RAM, on top of the ton required by the SD library...I'm doubtful these two could fit in the constraints of a stock Arduino.