gacrowell@micron.com wrote: > I'd suggest trying rate of change of velocity. What a great idea! And here we were all wasting time talking about measuring accelleration. ***************************************************************** Embed Inc, embedded system specialists in Littleton Massachusetts (978) 742-9014, http://www.embedinc.com -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist