----- Original Message ----- From: Tony Nixon > > Just some thoughts...I'm really interested in how you solve this. > > Me too :-) > > I was thinking video camera to 'see' the line. I would think that processing video data this quickly is generally beyond the capabilities of a microcontroller, particularly in rejecting false markings and all that. Maybe if you had a PIC dedicated to just watching some sort of very low res / high refresh rate camera communicating with another PIC you _might_ be able to do it safely. The speed involved seems to be radically swift, I sure hope humans aren't allowed near these things in operation. Jeff -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu