In SX Microcontrollers, SX/B Compiler and SX-Key Tool, bean wrote: Electro, Then that is syncronous communications. I suspect the diodes are causing the problem. Then you make the pin low the signal after the diode is basically floating. Bean. ---------- End of Message ---------- You can view the post on-line at: http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=125308#m125375 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)