> and when I power it up the microcontroller on > the stamp and the 5 volt regulator start burning up > (with nothing attached except the power supply and PC > serial link). Plugged in backwards possibly? ******************************************************************** Olin Lathrop, embedded systems consultant in Littleton Massachusetts (978) 742-9014, olin@embedinc.com, http://www.embedinc.com -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body