> I inadvertently connected an LED directly to RC5 with no current limiting > resistor. It is flashing brightly at 1 Pulse Per Second. The PIC port can only > source about 25 mA and that's about right for a bright LED. Other than the > current draw is there any down side to driving the LED directly? This is a bad idea as the PIC port is only specified to provide at least 25mA at a certain minimum voltage. There is no guarantee it won't supply more, at the LED voltage. You could end up damaging both the PIC and the LED. ***************************************************************** Embed Inc, embedded system specialists in Littleton Massachusetts (978) 742-9014, http://www.embedinc.com -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics