> How do you manage to short the +5V line without drawing huge > amounts of > current and overloading the 7805? The current-protection will limit the curent to 2 A or so. No problem. Wouter van Ooijen -- ------------------------------------------- Van Ooijen Technische Informatica: www.voti.nl consultancy, development, PICmicro products -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.