Since we are OT with sensors now, I am busy working on a project using the
PIC16C84 to sense which infra-red sensors were triggered, and then doing
some intricate math routines and displaying the projected distance the
object that moved through the IR beams will travel.  Does anyone know where
I can find more technical information on infrared (it would be nice if it is
somewhere on the internet).  If you want to you can reply to me directly, my
e-mail address is  mcloete@bsw.co.za

Thanks a lot

Maritz Cloete