> Very worthwhile page >=20 > http://www.redrok.com/led3xassm.htm#led3x I've tried some of their methods and circuits and they work very well. I use green LEDs, PIC and a couple of steppers Joe --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .