> I'm not driving it when the PIC is high, I am driving it when the PIC is > low. The PIC is running at 3V. But that contradicts your earlier statement of having the cathode connected to 3V. If the cathode is tied to a 3V rail, then the LED can only go on when the anode is raised above 3V. ***************************************************************** Embed Inc, embedded system specialists in Littleton Massachusetts (978) 742-9014, http://www.embedinc.com -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu