>> I'd suggest trying rate of change of velocity. >What a great idea! And here we were all wasting time talking about >measuring accelleration. That's just hilarious... or however you spell it... Mauricio Jancic Janso Desarrollos - Microchip Consultants Program Member info@janso.com.ar www.janso.com.ar (54) 11 - 4542 - 3519 -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist