In SX Microcontrollers, SX/B Compiler and SX-Key Tool, edgellmh wrote: Taking the 10 M resister out and running the 5V line directly to pin RB.3 prevents detection of the 12V pulse. marshall ---------- End of Message ---------- You can view the post on-line at: http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=300601#m300616 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)