In SX Microcontrollers, SX/B Compiler and SX-Key Tool, mghodge wrote: "it won't run" is a bit vague, but. How do you have the RESET pin wired? make sure you have .1uf filter caps on the VCC next to the chip. Check your GND is making continuity all the way back to your power source. Can you provide schematic, pics, code? ---------- End of Message ---------- You can view the post on-line at: http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=435144#m435154 Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2010 (http://www.dotNetBB.com)