> An issue is you need to generate six SPI serial streams - with a fast de= vice that has pin mapping, > you can use the SPI hardware and send data sequentially using 2 SPI ports= , mapping them to each of 3 > sets of pins in turn to do each colour.=20 >=20 >=20 Keep in mind though that pin mapping is much more flexible for the PIC24 pa= rts=20 than for the PIC32 parts. The PIC24 I have used can map almost any function= to=20 any PPS pin but the PIC32 works with groups of specific PPS pins and functi= ons. Perhaps you could use the PIC24FJxxxDA chips which has built in graphics=20 controller and use the output streams, possibly with some driver circuit, t= o=20 drive your modules. /Ruben --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .