At 11:38 AM 5/28/01 -0400, you wrote: >Your application has the following characteristics:- >1. it needs indirect contact sensing. >2. there is a certain degree of uncertainness on the parameters to acquire. >3. the sensing system needs some flexibility to accomodate variation. > >How about using a PC based image processing system if budget allows? This solution is appealing if only for the gross overkill "nuclear flyswatter" approach. ;-) Best regards, =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Spehro Pefhany --"it's the network..." "The Journey is the reward" speff@interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com Contributions invited->The AVR-gcc FAQ is at: http://www.bluecollarlinux.com =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics