In SX Microcontrollers, SX/B Compiler and SX-Key Tool, JonnyMac wrote: Car electrical systems can be very noisy -- I'd be inclined to use more filtering, upstream and downstream of the regulator, and with 0.1 uF bypass caps near any IC in your circuit. ---------- End of Message ---------- You can view the post on-line at: http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=197897#m197955 Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2007 (http://www.dotNetBB.com)