Hi, I've seen a number of circuits where a capacitor is placed between the VSS and VDD pins of the PIC. Is this something that should always be done? What is the purpose of this capacitor? Thanks, Matt -- Matt N. Marsh Email: matt@mattmarsh.net Yahoo: marshmn Web: http://www.mattmarsh.net/ Jabber: mattmarsh@jabber.org MSN: matt@mattmarsh.net ICQ: 250467363 AIM: MattMarshUK -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.