The other option to be aware of is the APA102C. Similar in concept (RGB with driver on a databus) but with two important differences: The databus is "close enough" to SPI and The internal PWM is _much_ faster (20MHz from memory) -Denny --=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 .