In SX Microcontrollers, SX/B Compiler and SX-Key Tool, peterverkaik wrote: From your picture it looks like the sx28 is in a socket in your breadboard. To be clear, you can program that sx28 using the DPB, but not when it is inserted in your breadboard, right? Then, after you programmed it in the PDB, and reinserted in your breadboard, does it then run as you expect (with sxkey not connected to the header)? If it does then the resonator circuitry is working. If not, there is something really wrong with your breadboard resonator cicuitry. Bad resonator perhaps? regards peter ---------- End of Message ---------- You can view the post on-line at: http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=139996#m140032 Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2006 (http://www.dotNetBB.com)