In SX Microcontrollers, SX/B Compiler and SX-Key Tool, bean wrote: Lance, You cannot use the internal oscillator to do serial communications. It is not accurate enough. Also you are going to miss incoming data while you are sending data. Bean. ---------- End of Message ---------- You can view the post on-line at: http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=263268#m263287 Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2008 (http://www.dotNetBB.com)