Oh, yes! I had similar problems when I started. Have you tied pin 36 (RB3/PGM) to GND, or at least pulled it low? If not, do so. /frax ----- Original Message -----=20 From: "=C5ke Neehr" To: Sent: Tuesday, October 01, 2002 5:38 PM Subject: [PIC]: 16F877 Hello! Is there any usually misstake who a newbie does with the PIC 16F877? My circuit works only properly in terms of one to ten after reset! Mostly it like to works random. Anybody who has the same problem ? Regards =C5keN -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details. -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.