On Sat, 4 Jul 2009 22:24:41 -0400 solarwind wrote: > Why > don't they just build the resistor right into the LED so it makes > everyone's life easier? Do such products exist? Yes they do exist. John -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist