I'm writing a little plotting library for LCDs. I'll try to publish it once it's more polished. What do you think?
For now it supports reading data from a Vector, arbitrary scaling on both axes, linear interpolation, different point styles (square, circle), arbitrary many graphs.
It's a pretty interesting concept. I don't want it here though. I'm just building this for my own needs (mostly fun).
I'll look into this as a consumer though next time I need to plot stuff on a desktop :)