In SX Microcontrollers, SX/B Compiler and SX-Key Tool, crgwbr wrote: Thanks Bean, Although I'm not sure where you got the 30 revolutions per second. I had mentioned 0.5 rpm, meaning about 0.008 revolutions per secound or about 20 pulses per second. Eather way it shouldn't be a problem. Pull-up resister, that means the pulses will be low, and the space will be high, corect. ---------- End of Message ---------- You can view the post on-line at: http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=147629#m147645 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)