> > > That's the ones! I bought a couple of samples to play with, then realised > that you had to keep them refreshed, and lost interest. If you could have > just sent them an image and they'd keep it displayed until changed, they > would have been much more useful. Shame! They're still in their box > somewhere in my deep-litter filing system... > > > I've done driver code for them in the AVR > > How many could you run at once - more than one? If you need a processor > per button it goes from VERY expensive to ridiculous! :-) I never tried going more than one, but you can chain them like serial shift registers. Knowing the code, I'd say that the tiny-26 could probably deal with at least four, maybe more. I could set it up and try it, but that's some fair work. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist