In SX Microcontrollers, SX/B Compiler and SX-Key Tool, edgellmh wrote: The PDB LED from pin 3 of the RX module has become very feeble but it still does not respond to whether or not pin 3 of the TX module is high. Pin 3 of the TX module also has a brn, blk, orn resister to ground. marshall ---------- End of Message ---------- You can view the post on-line at: http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=393125#m393380 Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2009 (http://www.dotNetBB.com)