> The main trade-off is that the higher the multiplex ratio the more > sensitive to temperature the display becomes and you may need to provide > contrast adjustment and temperature compensation. I suggest staying at 1:4 1. What do you mean with 1:4 ? 2. Whats the compensation needed for temperature? Different frecuency or different duty cicle? Regards, Mauricio Jancic -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist