In SX Microcontrollers, SX/B Compiler and SX-Key Tool, bean wrote: Chris, I don't see any flyback diodes on the solenoids or the relay ? They are really needed. Cars (and motorcycles) have unbelieveable amounts of noise on there batteries. Good (really good) filtering is required. Bean. ---------- End of Message ---------- You can view the post on-line at: http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=92048#m93975 Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2005 (http://www.dotNetBB.com)